{"title":"EG4","description":"\u003ch2\u003eEG4 Batteries, Inverters and Solar Kits: How to Choose\u003c\/h2\u003e\n\u003cp\u003eEG4 builds 48V hybrid inverters and LiFePO4 battery banks for homes, cabins and off-grid builds, and this collection covers all of it. EG4 batteries such as the 280Ah All-Weather unit are sold on their own, EG4 hybrid inverters run from 6,000W to a 16,000W FlexBOSS21, and the PowerPro kits pair an inverter with two, three or six batteries so nothing has to be matched by hand.\u003c\/p\u003e\n\u003cp\u003eThe collection holds 23 products from EG4 and BigBattery (BigBattery bundles its ETHOS batteries with EG4 18kPV inverters). Prices start from $1,499 for the EG4 6000XP inverter and reach about $26,415 for the three-inverter, six-battery PowerPro 36kW system. Most buyers land somewhere between a single inverter and a 12kW kit with 28.6kWh of storage.\u003c\/p\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/EG4-8K-12KPV-Front.webp?v=1784138222\u0026amp;width=800\" alt=\"EG4 12kPV 8,000W 48V all-weather hybrid inverter front view\" loading=\"lazy\" width=\"800\" height=\"800\"\u003e\n\u003ch3\u003eHow to choose an EG4 inverter or battery\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eContinuous output.\u003c\/strong\u003e Count the loads that run at the same time. The \u003ca href=\"\/products\/eg4-6-000w-120vac-240vac-off-grid-hybrid-solar-inverter\"\u003eEG4 6,000W Off-Grid Hybrid Inverter\u003c\/a\u003e covers a cabin or a well-managed home and parallels up to 16 units later. The \u003ca href=\"\/products\/eg4-12kpv-8-000w-48v-hybrid-inverter-all-weather\"\u003eEG4 12kPV 8,000W Hybrid Inverter\u003c\/a\u003e steps up to 8,000W in a NEMA 4X housing you can mount outdoors. A whole house with central air is FlexBOSS21 territory: 12,000W on its own, 16,000W with solar assisting.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrid-tied or off-grid.\u003c\/strong\u003e The 12kPV and FlexBOSS21 work tied to the utility, fully off-grid or in between. The 6000XP and the PowerPro kits are built as off-grid systems. Decide this first because it changes which permits and which inverter you need.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery capacity and enclosure.\u003c\/strong\u003e The \u003ca href=\"\/products\/eg4-powerpro-48v-14-3kwh-280ah-lifepo4-battery\"\u003eEG4 PowerPro 48V 14.3kWh 280Ah Battery\u003c\/a\u003e is IP65 rated with self-heating, so it can live outside. The 314Ah Indoor WallMount (16kWh nominal, 12.86kWh recommended usable) belongs in a garage or utility room.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKit or components.\u003c\/strong\u003e If you want one order and closed-loop communication already sorted, an EG4 solar kit such as the PowerPro 12kW with two or three batteries is the shorter path. Buy components when you already own part of the system.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003ePopular picks in this collection\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eKey numbers\u003c\/th\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003cth\u003ePrice from\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/eg4-6-000w-120vac-240vac-off-grid-hybrid-solar-inverter\"\u003eEG4 6000XP Off-Grid Hybrid Inverter\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e6,000W, 8,000W solar input, dual MPPT\u003c\/td\u003e\n\u003ctd\u003eCabins and first off-grid builds\u003c\/td\u003e\n\u003ctd\u003e$1,499\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/eg4-flexboss21-21kw-split-phase-hybrid-solar-inverter\"\u003eEG4 FlexBOSS21 Hybrid Inverter\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e12,000W continuous, 21,000W PV, 3 MPPT\u003c\/td\u003e\n\u003ctd\u003eWhole-home hybrid with GridBOSS\u003c\/td\u003e\n\u003ctd\u003e$3,600\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/eg4-powerpro-12kw-28-6kwh-48v-off-grid-system\"\u003eEG4 PowerPro 12kW 28.7kWh System\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e12kW, 28.6kWh, 2 batteries\u003c\/td\u003e\n\u003ctd\u003eFull-size off-grid home\u003c\/td\u003e\n\u003ctd\u003e$8,685\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/bigbattery-ethos-48v-20-48kwh-battery-1x-eg4-18kpv-12kw-hybrid-inverter-ess-k0956\"\u003eBigBattery ETHOS 20.48kWh + EG4 18kPV\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e12kW, 20.48kWh, 18kW PV\u003c\/td\u003e\n\u003ctd\u003eUL 9540 whole-home backup\u003c\/td\u003e\n\u003ctd\u003e$8,684\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/209.webp?v=1782062336\u0026amp;width=800\" alt=\"EG4 PowerPro 12kW 28.7kWh 48V off-grid home solar system with inverter and two batteries\" loading=\"lazy\" width=\"800\" height=\"800\"\u003e\n\u003ch3\u003eSizing tips\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eStart with the \u003ca href=\"\/pages\/solar-kit-calculator\"\u003eSolar Kit Calculator\u003c\/a\u003e. Enter your appliances and ZIP code and it returns the battery, inverter and panel size before you compare EG4 models.\u003c\/li\u003e\n\u003cli\u003ePlan storage for at least one night plus a cloudy day. One 280Ah battery gives 14.3kWh; the PowerPro 12kW 43kWh kit with three batteries covers a home with electric cooking.\u003c\/li\u003e\n\u003cli\u003eCheck solar input, not just output. The 6000XP accepts 8,000W of PV, the FlexBOSS21 21,000W across five strings. Buy the inverter for the array you will have in three years.\u003c\/li\u003e\n\u003cli\u003eMatch battery communication to the inverter. The 280Ah All-Weather battery pairs with EG4 or BigBattery inverters in closed loop; do not assume a third-party inverter will talk to it.\u003c\/li\u003e\n\u003cli\u003eOutdoor mounting needs the right ratings. The 12kPV and FlexBOSS21 are NEMA 4X, the 280Ah battery IP65; the Indoor WallMount is not.\u003c\/li\u003e\n\u003cli\u003eGrowing later is easier with an eg4 solar system that parallels. The 6000XP goes to 16 units; the FlexBOSS line adds GridBOSS for multi-inverter control.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDo EG4 inverters need EG4 batteries?\u003c\/strong\u003e They work best with them. The PowerPro kits and the WallMount plus FlexBOSS21 package use closed-loop communication between battery and inverter, which is why they are sold as matched sets.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I add solar panels to a PowerPro kit?\u003c\/strong\u003e Yes. The kits ship as inverter plus batteries; panels are sold separately so you can size the array to your roof or ground mount. The 12kW kits accept up to 18kW of PV.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the warranty on EG4 gear?\u003c\/strong\u003e The 12kPV, FlexBOSS21 and 280Ah battery each carry a 10-year manufacturer warranty per the product listings; the battery is rated for 8,000 or more cycles.\u003c\/p\u003e\n\u003cp\u003eEverything here ships free to the mainland US from brand partner warehouses, usually within a few business days, with 30-day returns. If you are unsure whether you need the 8,000W or 12,000W class, call us and we will size the system with you.\u003c\/p\u003e\n","products":[{"product_id":"off-grid-12kw-power-system-48v-10-2kwh-ethos-battery-bigbattery","title":"EG4 12kW Output Power System | 48V 10.2kWh ETHOS Battery Backup | BigBattery","description":"\u003cdiv class=\"esk-d2\"\u003e\n\u003cdiv class=\"esk-hero\"\u003e\n\u003cp class=\"esk-eyebrow\"\u003eBattery · 12,000W · 10,240Wh\u003c\/p\u003e\n\u003ch2\u003eEG4 12kW Output Power System\u003c\/h2\u003e\n\u003cp class=\"esk-lead\"\u003eExperience the future of off-grid power with BigBattery's groundbreaking \u003cstrong\u003e48V\u003c\/strong\u003e ETHOS systems! Designed for tiny homes, cabins, and homesteads, our \u003cstrong\u003e10.24kWh\u003c\/strong\u003e configuration delivers unparalleled reliability, safety, and cutting-edge features.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-rays\"\u003e\u003csvg viewbox=\"0 0 960 22\" preserveaspectratio=\"none\" aria-hidden=\"true\"\u003e\u003cpath d=\"M0,11 L30,4 M40,11 L65,2 M75,11 L95,5 M110,11 L125,3 M140,11 L160,6\" stroke=\"#246AAF\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003cpath d=\"M820,11 L840,3 M855,11 L875,5 M885,11 L905,2 M920,11 L935,6 M945,11 L960,4\" stroke=\"#36AF24\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-stats\"\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e12,000W\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eRated Output\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e10,240Wh\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eBattery Capacity\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e18,000W\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eMax Solar Input\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e48V\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eSystem Voltage\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection class=\"esk-sec esk-overview\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eOverview\u003c\/span\u003e\u003ch2 class=\"esk-sec-title\"\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe ETHOS System redefines off-grid power, boasting a versatile, stackable, and modular design for effortless expansion. With all mounting hardware included, installation is a breeze. Featuring an IP65-rated casing and internal fire suppression system, along with an advanced BMS offering auto cell-balancing, the ETHOS ensures enduring safety and reliability. Monitor your power system's status and performance effortlessly through the interactive LED display and communication protocols like \u003cstrong\u003eCANBus\u003c\/strong\u003e and \u003cstrong\u003eRS485\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eWhether you seek reliable emergency backup power or year-round uninterrupted energy, the ETHOS delivers consistent, efficient power day in, day out. Empower yourself with control over your energy. Invest in the \u003cstrong\u003e48V ETHOS\u003c\/strong\u003e today and embrace a future of sustainable power solutions!\u003c\/p\u003e\n\u003cdiv class=\"esk-video\"\u003e\u003ciframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/dd_Fz3Jgpko?si=gvaLQ7tjxONB_3ta\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-sec esk-box alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eIncluded\u003c\/span\u003e\u003ch2 class=\"esk-sec-title\"\u003eWhat's included in the kit:\u003c\/h2\u003e\n\u003cul class=\"esk-box-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eETHOS Control Box\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e2×\u003c\/span\u003e\u003cspan\u003e48V ETHOS 5.12kWh Stackable Battery Module\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eEG4 12kW Split Phase Inverter. Supports grid-tie, hybrid, and off-grid operation modes.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003e10kWh Ethos Controller to Battery Power Cable 31.5\" inch (800mm)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eETHOS Rack Base\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003csection class=\"esk-sec esk-specs\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eData\u003c\/span\u003e\u003ch2 class=\"esk-sec-title\"\u003eBattery System Specifications (BigBattery ETHOS 10.24 kWh)\u003c\/h2\u003e\n\u003cdiv class=\"esk-table-wrap\"\u003e\u003ctable class=\"esk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSKU\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eK0954\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSystem Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e48V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eNominal Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e51.2V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eChemistry\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLiFePO4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ekWh Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10.24kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAh Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharging Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e55.6V - 57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Charge Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Voltage Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e48V - 57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSuggested Low Voltage Cutoff\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e48V - 50.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCell Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16S 2P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Continuous Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Continuous Power\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10240W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Discharge Peak Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e300A (Max 5 seconds)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Charge Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCharge Temperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e32°F - 113°F (0°C - 45°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDischarge Temperature Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-4°F - 140°F (-20°C - 60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOptimal Discharge Temp Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e59°F - 95°F (15°C - 35°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStorage Temp Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-4°F - 113°F (-20°C - 45°C) (Max 6 months)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e273 lb (123.8 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDepth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6.7 in (170 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e26.5 in (674 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e43.3 in (1100 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Connections\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to (16) parallel connections per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtection Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP65\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCANBus \/ RS485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCertifications\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUL9540, UL9540a, UL1973, \u0026amp; UN38.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 Years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-sec esk-specs alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eData\u003c\/span\u003e\u003ch2 class=\"esk-sec-title\"\u003e\u003ca href=\"\/products\/eg4-12kpv-8-000w-48v-hybrid-inverter-all-weather\"\u003e\nEG4 12kW Hybrid Inverter Specifications\u003c\/a\u003e\u003c\/h2\u003e\n\u003cdiv class=\"esk-table-wrap\"\u003e\u003ctable class=\"esk-spec-table\"\u003e\n\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power\u003c\/td\u003e\n\u003ctd\u003e12,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Voltage\u003c\/td\u003e\n\u003ctd\u003e120V AC \/ 240V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Frequency\u003c\/td\u003e\n\u003ctd\u003e50 Hz \/ 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Continuous AC Current\u003c\/td\u003e\n\u003ctd\u003e50A @ 240V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. AC Input Power\u003c\/td\u003e\n\u003ctd\u003e12,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. AC Bypass\u003c\/td\u003e\n\u003ctd\u003e200A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e180 - 270V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e120V AC \/ 240V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Continuous Output Current\u003c\/td\u003e\n\u003ctd\u003e50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Frequency\u003c\/td\u003e\n\u003ctd\u003e50 Hz \/ 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge Capacity (with PV)\u003c\/td\u003e\n\u003ctd\u003e14,700W (10 min) \/ 15,500W (5 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge Capacity (without PV)\u003c\/td\u003e\n\u003ctd\u003e13,500W (10 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Continuous Line Wattage\u003c\/td\u003e\n\u003ctd\u003e6,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Factor\u003c\/td\u003e\n\u003ctd\u003e0.99 (Full Load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReactive Power Adjustment Range\u003c\/td\u003e\n\u003ctd\u003e-0.8 ~ 0.8 Leading Adjustable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Harmonic Distortion\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;5% (Full Load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransfer Time\u003c\/td\u003e\n\u003ctd\u003e10 - 20 ms (Single) \/ 20 ms (Parallel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Continuous Output Current (Backup)\u003c\/td\u003e\n\u003ctd\u003e50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Bypass (Generator)\u003c\/td\u003e\n\u003ctd\u003e90A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage (Backup)\u003c\/td\u003e\n\u003ctd\u003e120V AC \/ 240V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power (Backup)\u003c\/td\u003e\n\u003ctd\u003e12,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Continuous Line Wattage (Backup)\u003c\/td\u003e\n\u003ctd\u003e8,000W (per 120V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range (Backup)\u003c\/td\u003e\n\u003ctd\u003e180 - 270V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Frequency (Backup)\u003c\/td\u003e\n\u003ctd\u003e50 Hz \/ 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Output Power (with PV)\u003c\/td\u003e\n\u003ctd\u003e14,700W (10 min) \/ 15,500W (5 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Output Power (without PV)\u003c\/td\u003e\n\u003ctd\u003e13,500W (10 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Harmonic Distortion (Backup)\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitching Time (Backup)\u003c\/td\u003e\n\u003ctd\u003e10 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature Range\u003c\/td\u003e\n\u003ctd\u003e-13ºF - 140ºF (-25ºC - 60ºC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAltitude\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;6,561 ft (2000 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e0 - 100%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Noise Emission\u003c\/td\u003e\n\u003ctd\u003e68 dB @ 3 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eRS485 \/ CANBus \/ WiFi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Parallel Connections\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-sec esk-docs\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eAdditional Documentation\u003c\/span\u003e\u003ch2 class=\"esk-sec-title\"\u003eAdditional Documentation\u003c\/h2\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/03\/ETHOS-SpecSheet-1.1-1.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS Spec Sheet\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/01\/ETHOS-BATTERY-USER-MANUAL-V1.4.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS User Manual\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2023\/12\/FETHS-48051-G1-UL9540-Certification-20Dec23-Revision.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UL9540 Certification\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2023\/11\/SDS_BigBattery_LFP-1.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS Safety Data Sheet\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003cdiv class=\"esk-footer\"\u003e\u003cp\u003e\u003cstrong\u003eFree shipping\u003c\/strong\u003e within the contiguous USA · \u003cstrong\u003e$0 sales tax\u003c\/strong\u003e in most states · Questions? Call \u003ca href=\"tel:+13073177213\"\u003e+1 307 317 7213\u003c\/a\u003e\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BigBattery","offers":[{"title":"Default Title","offer_id":40640740294711,"sku":"K0954","price":6404.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/10-kWh-x2-Batteries-KIT0954-V2.webp?v=1752177229"},{"product_id":"off-grid-12kw-power-system-48v-15-4kwh-ethos-battery-bigbattery","title":"EG4 12kW Solar Power System with 48V 15.4kWh ETHOS Battery by BigBattery | Whole Home Backup","description":"\u003cdiv class=\"esk-d2\"\u003e\n\u003cdiv class=\"esk-hero\"\u003e\n\u003cp class=\"esk-eyebrow\"\u003eBattery · 12,000W · 15,360Wh\u003c\/p\u003e\n\u003ch2\u003eEG4 12kW Solar Power System with 48V 15.4kWh ETHOS Battery by BigBattery\u003c\/h2\u003e\n\u003cp class=\"esk-lead\"\u003eExperience the future of off-grid power with BigBattery's groundbreaking \u003cstrong\u003e48V\u003c\/strong\u003e ETHOS systems! Designed for tiny homes, cabins, and homesteads, our \u003cstrong\u003e15.4kWh\u003c\/strong\u003e configuration delivers unparalleled reliability, safety, and cutting-edge features.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-rays\"\u003e\u003csvg viewbox=\"0 0 960 22\" preserveaspectratio=\"none\" aria-hidden=\"true\"\u003e\u003cpath d=\"M0,11 L30,4 M40,11 L65,2 M75,11 L95,5 M110,11 L125,3 M140,11 L160,6\" stroke=\"#246AAF\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003cpath d=\"M820,11 L840,3 M855,11 L875,5 M885,11 L905,2 M920,11 L935,6 M945,11 L960,4\" stroke=\"#36AF24\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-stats\"\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e12,000W\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eRated Output\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e15,360Wh\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eBattery Capacity\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e48V\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eSystem Voltage\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e8,000\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eCycle Life\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection class=\"esk-sec esk-overview\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eOverview\u003c\/span\u003e\u003ch2 class=\"esk-sec-title\"\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe ETHOS system redefines off-grid power, boasting a versatile, stackable, and modular design for effortless expansion. With all mounting hardware included, installation is a breeze. Featuring an IP65-rated casing and internal fire suppression system, along with an advanced BMS offering auto cell-balancing, the ETHOS ensures enduring safety and reliability. Monitor your power system's status and performance effortlessly through the interactive LED display and communication protocols like CANBus and RS485.\u003c\/p\u003e\n\u003cp\u003eWhether you seek reliable emergency backup power or year-round uninterrupted energy, the ETHOS delivers consistent, efficient power day in, day out. Empower yourself with control over your energy. Invest in the 48V ETHOS today and embrace a future of sustainable power solutions!\u003c\/p\u003e\n\u003cp\u003eTo explore more solutions for reliable off-grid power and whole-home backup, visit our \u003ca href=\"\/collections\/big-battery-for-home-backup\" title=\"BigBattery for Home Backup\"\u003eBig Battery for Home Backup\u003c\/a\u003e collection and find the system that fits your energy needs.\u003c\/p\u003e\n\u003cdiv class=\"esk-video\"\u003e\u003ciframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/dd_Fz3Jgpko?si=gvaLQ7tjxONB_3ta\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-sec esk-box alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eIncluded\u003c\/span\u003e\u003ch2 class=\"esk-sec-title\"\u003eWhat's included in the kit:\u003c\/h2\u003e\n\u003cul class=\"esk-box-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eETHOS Control Box\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e3×\u003c\/span\u003e\u003cspan\u003e48V ETHOS 5.12kWh Stackable Battery Module\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eEG4 12kW Hybrid Inverter\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003e15kWh Ethos Controller to Battery Power Cable 4ft (1220mm)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eETHOS Rack Base\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cfigure class=\"esk-fig\"\u003e\u003cimg alt=\"The BigBattery EG4 24kW 30.7kWh Off-Grid Power System offers 48V backup, pure sine wave, 18,000W PV input, up to 21,000W max, 12,000W output, 15,500W surge power, stackable units with AC-coupling and three MPPTs for split phase 120\/240V.\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/sinewave1_a8568714-5b6f-4b3d-978f-85d81d2858fb.webp?v=1752164316\"\u003e\u003c\/figure\u003e\u003c\/section\u003e\u003csection class=\"esk-sec esk-specs\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eData\u003c\/span\u003e\u003ch2 class=\"esk-sec-title\"\u003eSingle Stack Specifications\u003c\/h2\u003e\n\u003cdiv class=\"esk-table-wrap\"\u003e\u003ctable class=\"esk-spec-table\"\u003e\n\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU:\u003c\/td\u003e\n\u003ctd\u003eK0955\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGTIN-12 (U.P.C.):\u003c\/td\u003e\n\u003ctd\u003e850061252098\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Voltage:\u003c\/td\u003e\n\u003ctd\u003e48V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Voltage:\u003c\/td\u003e\n\u003ctd\u003e51.2V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry:\u003c\/td\u003e\n\u003ctd\u003eLiFePO4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ekWh Capacity:\u003c\/td\u003e\n\u003ctd\u003e15.36kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAh Capacity:\u003c\/td\u003e\n\u003ctd\u003e300Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging Voltage Range:\u003c\/td\u003e\n\u003ctd\u003e55.6 – 57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Charge Voltage:\u003c\/td\u003e\n\u003ctd\u003e57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range:\u003c\/td\u003e\n\u003ctd\u003e48 – 57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuggested Low Voltage Cutoff:\u003c\/td\u003e\n\u003ctd\u003e48 – 50.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMS Cutoff Range:\u003c\/td\u003e\n\u003ctd\u003e42 – 47V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCell Configuration:\u003c\/td\u003e\n\u003ctd\u003e16S 3P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Continuous Discharge Current:\u003c\/td\u003e\n\u003ctd\u003e250A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Continuous Power:\u003c\/td\u003e\n\u003ctd\u003e12,800W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Discharge Peak Current:\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e300A (Max 5 seconds)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Charge Current:\u003c\/td\u003e\n\u003ctd\u003e200A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharge Temperature Range:\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e32°F – 113°F (0°C – 45°C)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarge Temperature Range:\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e-4°F – 140°F (-20°C – 60°C)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptimal Discharge Temperature Range:\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e59°F – 95°F (15°C – 35°C)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage Temperature Range (SoC \u0026gt;50%):\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e-4°F – 113°F (-20°C – 45°C) (Max 6 months)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight:\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e387 lb (175.5 kg)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDepth:\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e6.7 in (170 mm)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth:\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e26.5 in (674 mm)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight:\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003e\n\u003cdiv\u003e59.8 in (1520 mm)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Connections:\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003e\n\u003cdiv\u003eUp to (16) parallel connections per control box\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Rating:\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003e\n\u003cdiv\u003eIP65 \/ NEMA 4X\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications:\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003e\n\u003cdiv\u003eCANBus \/ RS485\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications:\u003c\/td\u003e\n\u003ctd\u003e\n\u003cdiv\u003e\n\u003cdiv\u003eUL9540, UL9540A, UL1973, \u0026amp; UN38.3\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003e\u003ca href=\"\/products\/eg4-12kpv-8-000w-48v-hybrid-inverter-all-weather\"\u003eEG4 12kPV 48V Hybrid Inverter\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eOutput\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal output power\u003c\/td\u003e\n\u003ctd\u003e8,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak power (0.5s \/ 1min)\u003c\/td\u003e\n\u003ctd\u003e16,000W \/ 10,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput voltage\u003c\/td\u003e\n\u003ctd\u003e120\/240V, 120\/208V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax output current\u003c\/td\u003e\n\u003ctd\u003e33.3A @ 240V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax cont. per-line wattage\u003c\/td\u003e\n\u003ctd\u003e4,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower factor\u003c\/td\u003e\n\u003ctd\u003e0.99 (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransfer time\u003c\/td\u003e\n\u003ctd\u003e20ms default \/ 10ms selectable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocked rotor amps\u003c\/td\u003e\n\u003ctd\u003e195 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eSolar Input\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT channels\u003c\/td\u003e\n\u003ctd\u003e2 (2 inputs each)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax utilized solar power\u003c\/td\u003e\n\u003ctd\u003e12,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRec. max solar input\u003c\/td\u003e\n\u003ctd\u003e15,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax usable input current\u003c\/td\u003e\n\u003ctd\u003e25A\/25A (41.6A total)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC input voltage range\u003c\/td\u003e\n\u003ctd\u003e100–600 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT voltage range\u003c\/td\u003e\n\u003ctd\u003e120–500 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficiency (PV to battery)\u003c\/td\u003e\n\u003ctd\u003e99.9%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eBattery \u0026amp; Grid\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible battery types\u003c\/td\u003e\n\u003ctd\u003eLead-acid, lithium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal battery voltage\u003c\/td\u003e\n\u003ctd\u003e48 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery voltage range\u003c\/td\u003e\n\u003ctd\u003e40–60 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge\/discharge current\u003c\/td\u003e\n\u003ctd\u003e167A @ 48V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax gen\/grid passthrough\u003c\/td\u003e\n\u003ctd\u003e80A \/ 80A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMin. generator size\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;5,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCEC weighted efficiency\u003c\/td\u003e\n\u003ctd\u003e96.4%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003ePhysical \u0026amp; Environmental\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (H×W×D)\u003c\/td\u003e\n\u003ctd\u003e29.5 × 20.5 × 11.2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e110 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure rating\u003c\/td\u003e\n\u003ctd\u003eNEMA 4X (all-weather)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e-13°F to 140°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise level\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;50 dB @ 3 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesign topology\u003c\/td\u003e\n\u003ctd\u003eHigh-frequency, transformerless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdle consumption\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;55 W standby\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eConnectivity \u0026amp; Warranty\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication\u003c\/td\u003e\n\u003ctd\u003eRS485 \/ Wi-Fi \/ CAN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax parallel units\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand \/ model\u003c\/td\u003e\n\u003ctd\u003eEG4 12kPV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eBuilt-In Protections\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePV faults\u003c\/td\u003e\n\u003ctd\u003eArc + ground fault\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring faults\u003c\/td\u003e\n\u003ctd\u003eReverse polarity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLeakage \u0026amp; surge\u003c\/td\u003e\n\u003ctd\u003eMonitoring + protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePV disconnect\u003c\/td\u003e\n\u003ctd\u003eIntegrated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003e3× BigBattery ETHOS 48V 5.12kWh LiFePO4 Battery Module\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eBattery\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem voltage\u003c\/td\u003e\n\u003ctd\u003e48V (51.2V nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry\u003c\/td\u003e\n\u003ctd\u003eLiFePO4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity per module\u003c\/td\u003e\n\u003ctd\u003e5.12kWh \/ 100Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCell configuration\u003c\/td\u003e\n\u003ctd\u003e16S per module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging voltage range\u003c\/td\u003e\n\u003ctd\u003e55.6-57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge voltage\u003c\/td\u003e\n\u003ctd\u003e57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating voltage range\u003c\/td\u003e\n\u003ctd\u003e48-57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuggested low-voltage cutoff\u003c\/td\u003e\n\u003ctd\u003e48-50.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMS cutoff range\u003c\/td\u003e\n\u003ctd\u003e42-47V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous discharge current\u003c\/td\u003e\n\u003ctd\u003e100A per module (200A per control box)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax discharge peak current\u003c\/td\u003e\n\u003ctd\u003e300A (max 5 seconds)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge current\u003c\/td\u003e\n\u003ctd\u003e200A per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCycle life\u003c\/td\u003e\n\u003ctd\u003e6,000+ cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eGeneral\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharge temperature\u003c\/td\u003e\n\u003ctd\u003e32-113°F (0-45°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarge temperature\u003c\/td\u003e\n\u003ctd\u003e-4-140°F (-20-60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptimal discharge temperature\u003c\/td\u003e\n\u003ctd\u003e59-95°F (15-35°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage (SoC \u0026gt;50%)\u003c\/td\u003e\n\u003ctd\u003e-4-113°F, max 6 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule footprint\u003c\/td\u003e\n\u003ctd\u003e26.5 in W x 6.7 in D (674 x 170 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax connections\u003c\/td\u003e\n\u003ctd\u003eUp to 16 modules per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eCANBus \/ RS485 (closed-loop with EG4 18kPV)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL9540, UL9540A, UL1973, UN38.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e12 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\u003csection class=\"esk-sec esk-docs alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eAdditional Documentation\u003c\/span\u003e\u003ch2 class=\"esk-sec-title\"\u003eAdditional documentation\u003c\/h2\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/03\/ETHOS-SpecSheet-1.1-1.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Ethos Spec Sheet\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/01\/ETHOS-BATTERY-USER-MANUAL-V1.4.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Ethos User Manual\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2023\/12\/FETHS-48051-G1-UL9540-Certification-20Dec23-Revision.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Ethos UL9540 Certification\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2023\/11\/SDS_BigBattery_LFP-1.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Ethos Safety Data Sheet\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003cdiv class=\"esk-footer\"\u003e\u003cp\u003e\u003cstrong\u003eFree shipping\u003c\/strong\u003e within the contiguous USA · \u003cstrong\u003e$0 sales tax\u003c\/strong\u003e in most states · Questions? Call \u003ca href=\"tel:+13073177213\"\u003e+1 307 317 7213\u003c\/a\u003e\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BigBattery","offers":[{"title":"Default Title","offer_id":40640741048375,"sku":"K0955","price":7467.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/15-kWh-x3-Batteries-KIT0955-V2.webp?v=1752164968"},{"product_id":"off-grid-24kw-power-system-48v-30-7kwh-ethos-battery-bigbattery","title":"EG4 24kW Output Power System | 48V 30.7kWh ETHOS Battery Backup | BigBattery","description":"\u003cdiv class=\"esk-pd esk-pd-d eth18kpv2x6-pd\"\u003e\n\u003c!-- ============ HERO ============ --\u003e\n\u003csection class=\"esk-hero\"\u003e\n\u003cp class=\"esk-eyebrow\"\u003eETHOS + EG4 18kPV ESS · 2× Inverter \/ 6× Battery (\"Large\")\u003c\/p\u003e\n\u003ch2\u003eBigBattery ETHOS + EG4 18kPV Hybrid Inverter ESS — 61.44kWh \/ 24kW System\u003c\/h2\u003e\n\u003cp class=\"esk-lead\"\u003eA complete, high-performance energy storage system pairing six scalable ETHOS 48V lithium battery modules with two EG4 18kPV hybrid inverters — delivering 61.44kWh of storage and 24,000W of continuous AC output in one integrated, UL 9540-certified package.\u003c\/p\u003e\n\u003cdiv class=\"esk-stats\"\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e61.44 kWh\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eTotal Storage (6× ETHOS)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e24,000 W\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eContinuous Output (2× 18kPV)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e36,000 W\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eMax Combined PV Input\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003eUL 9540\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eCertified System\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ OVERVIEW ============ --\u003e\n\u003csection class=\"esk-overview\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/11-3.webp?v=1789568304\" alt=\"Certainly! Here’s your rewritten sentence using the provided product data: A modern house at dusk with expansive windows and elegant outdoor lighting. In the foreground sits a white BigBattery EG4 24kW Output Power System with 48V 30.7kWh ETHOS Battery Backup, featuring sleek, rounded edges. Text reads: BigBattery — EG4 24kW Output Power System | The heartbeat of home energy. 12-year warranty. UL-certified, sustainable power, all set in clean IBM Plex Sans for a contemporary appeal.\"\u003e\u003c\/span\u003e\u003c\/section\u003e\n\u003csection class=\"esk-overview\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eOverview\u003c\/span\u003e\n\u003ch3\u003eAll-in-One Home \u0026amp; Grid-Tied Energy Storage\u003c\/h3\u003e\n\u003cp\u003eCombining the scalable \u003cstrong\u003eETHOS 48V lithium battery system\u003c\/strong\u003e with two \u003cstrong\u003eEG4 18kPV hybrid inverters\u003c\/strong\u003e, this system delivers reliable, efficient, and intelligent energy management for both on-grid and off-grid applications. Expandable well beyond this configuration, the ETHOS battery adapts to growing energy needs while the 18kPV inverters seamlessly manage power from solar, battery storage, and the grid.\u003c\/p\u003e\n\u003cp\u003eDesigned with UL 9540-certified configurations, advanced battery management, and U.S.-engineered components, this system ensures safe, maintenance-free performance with seamless closed-loop communication between battery and inverter.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eShips From:\u003c\/strong\u003e Texas, USA  |  \u003cstrong\u003eWarranty:\u003c\/strong\u003e 12 Years (Battery), 10 Years (Inverter)  |  \u003cstrong\u003eSupport:\u003c\/strong\u003e Lifetime USA-Based Tech Support\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- ============ CONFIG NOTE ============ --\u003e\n\u003cdiv class=\"esk-config-note\"\u003e\n\u003cp\u003eThis configuration pairs 2× EG4 18kPV inverters with 6× ETHOS battery modules (the \"Large\" tier). Totals — 61.44kWh storage, 24,000W continuous AC output, 36,000W max combined PV input — are calculated from BigBattery's confirmed per-unit specs, since the source page doesn't state a single combined figure for this specific tier.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c!-- ============ COMPATIBILITY ============ --\u003e\n\u003csection class=\"esk-compat\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eCompatibility\u003c\/span\u003e\n\u003ch3\u003eSystem Compatibility\u003c\/h3\u003e\n\u003cdiv class=\"esk-compat-group\"\u003e\n\u003ch4\u003eIntegrated \u0026amp; Optimized System (UL 9540 Certified + Closed-Loop Communication)\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eETHOS Battery System + EG4 18kPV Hybrid Inverter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-compat-group\"\u003e\n\u003ch4\u003eExpandable \u0026amp; Flexible\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eScalable ETHOS battery capacity well beyond this configuration\u003c\/li\u003e\n\u003cli\u003eCompatible with additional ETHOS modules for future expansion\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ KEY FEATURES ============ --\u003e\n\u003csection class=\"esk-features\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/6-8.webp?v=1789568322\" alt=\"A promotional image for the EG4 24kW Output Power System, featuring the 48V 30.7kWh ETHOS Battery Backup from BigBattery, illustrates indoor, outdoor, and commercial battery configurations with UL certification and installer-friendly features in a sleek layout. Various energy capacities—including up to 92kWh—are emphasized, with systems displayed on the left side. The design showcases subtle border radius effects and employs IBM Plex Sans font for a modern appearance, using CSS variables for consistent\"\u003e\u003c\/span\u003e\u003c\/section\u003e\n\u003csection class=\"esk-features\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eKey Features\u003c\/span\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul class=\"esk-feature-list\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll-in-One ESS Solution\u003c\/strong\u003e – Battery + inverter system designed to work seamlessly together\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e18kPV Hybrid Inverter Power\u003c\/strong\u003e – Supports solar, battery, and grid simultaneously\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLiFePO4 Battery Chemistry\u003c\/strong\u003e – Safe, stable lithium technology with long lifespan\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e6,000+ Cycle Life\u003c\/strong\u003e – Built for years of daily use and long-term savings\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced BMS Protection\u003c\/strong\u003e – Full protection against voltage, current, and temperature risks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClosed-Loop Communication\u003c\/strong\u003e – Optimized performance and real-time coordination between battery and inverter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModular Expansion\u003c\/strong\u003e – Easily increase storage capacity as energy needs grow\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFast Installation\u003c\/strong\u003e – Streamlined setup with integrated system design\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaintenance-Free Operation\u003c\/strong\u003e – No routine servicing required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- ============ SPECS ============ --\u003e\n\u003csection class=\"esk-specs\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eData\u003c\/span\u003e\n\u003ch3\u003eSpecifications (Per Unit)\u003c\/h3\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003eETHOS Battery (Each Module)\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem voltage\u003c\/td\u003e\n\u003ctd\u003e48V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal voltage\u003c\/td\u003e\n\u003ctd\u003e51.2V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry\u003c\/td\u003e\n\u003ctd\u003eLiFePO4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ekWh capacity\u003c\/td\u003e\n\u003ctd\u003e10.24 kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAh capacity\u003c\/td\u003e\n\u003ctd\u003e200 Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging voltage range\u003c\/td\u003e\n\u003ctd\u003e55.6–57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge voltage\u003c\/td\u003e\n\u003ctd\u003e57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating voltage range\u003c\/td\u003e\n\u003ctd\u003e48–57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuggested low-voltage cutoff\u003c\/td\u003e\n\u003ctd\u003e48–50.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMS cutoff range\u003c\/td\u003e\n\u003ctd\u003e42–47V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCell configuration\u003c\/td\u003e\n\u003ctd\u003e16S 2P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous discharge current\u003c\/td\u003e\n\u003ctd\u003e200A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous power\u003c\/td\u003e\n\u003ctd\u003e10,240W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax discharge peak current\u003c\/td\u003e\n\u003ctd\u003e300A (5s max)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge current\u003c\/td\u003e\n\u003ctd\u003e200A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharge temperature range\u003c\/td\u003e\n\u003ctd\u003e32°F–113°F (0°C–45°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarge temperature range\u003c\/td\u003e\n\u003ctd\u003e-4°F–140°F (-20°C–60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e273 lb (123.8 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (D×W×H)\u003c\/td\u003e\n\u003ctd\u003e6.7 × 26.5 × 43.3 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax parallel connections\u003c\/td\u003e\n\u003ctd\u003eUp to 16 per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL9540, UL9540A, UL1973, UN38.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003e\u003ca href=\"\/products\/eg4-12kw-18kpv-hybrid-inverter\"\u003eEG4 18kPV Inverter (Each Unit)\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC voltage\u003c\/td\u003e\n\u003ctd\u003e120V \/ 240V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC frequency\u003c\/td\u003e\n\u003ctd\u003e50 \/ 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous AC current\u003c\/td\u003e\n\u003ctd\u003e50A @ 240V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC input power\u003c\/td\u003e\n\u003ctd\u003e12,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power\u003c\/td\u003e\n\u003ctd\u003e12,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC bypass\u003c\/td\u003e\n\u003ctd\u003e200A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge capacity (with PV)\u003c\/td\u003e\n\u003ctd\u003e14,700W (10min) \/ 15,500W (5min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower factor\u003c\/td\u003e\n\u003ctd\u003e0.99 (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal harmonic distortion\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 5% (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransfer time\u003c\/td\u003e\n\u003ctd\u003e10–20ms (single) \/ 20ms (parallel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of MPPTs\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC input voltage range\u003c\/td\u003e\n\u003ctd\u003e100–600V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT operating voltage range\u003c\/td\u003e\n\u003ctd\u003e140–500V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax PV array power\u003c\/td\u003e\n\u003ctd\u003e18,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax efficiency\u003c\/td\u003e\n\u003ctd\u003e94–99.9%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery voltage range\u003c\/td\u003e\n\u003ctd\u003e40–60V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge\/discharge current\u003c\/td\u003e\n\u003ctd\u003e250A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating\/storage temp.\u003c\/td\u003e\n\u003ctd\u003e-13°F–140°F (-25°C–60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eRS485 \/ CANBus \/ WiFi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e121 lbs (55 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (D×W×H)\u003c\/td\u003e\n\u003ctd\u003e11.2 × 20.5 × 34.3 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ DOWNLOADS ============ --\u003e\n\u003csection class=\"esk-downloads\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eAdditional Documentation\u003c\/span\u003e\n\u003ch3\u003eDocuments \u0026amp; Downloads\u003c\/h3\u003e\n\u003cdiv class=\"esk-download-group\"\u003e\n\u003ch4\u003eBattery Downloads (ETHOS)\u003c\/h4\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/04\/ETHOS-SpecSheet-1.4-BatteryCB.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS Spec Sheet \u003c\/a\u003e \u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/08\/BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS ESS User Manual \u003c\/a\u003e \u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/UL9540A-Certificate-1.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UL9540A Certificate \u003c\/a\u003e \u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/02\/UL1973-ETHOS.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UL1973 Certificate \u003c\/a\u003e \u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/48V-ETHOS-DOC-UN38.3.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UN38.3 Certificate \u003c\/a\u003e \u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2023\/11\/SDS_BigBattery_LFP-1.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Safety Data Sheet \u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-download-group\"\u003e\n\u003ch4\u003eInverter Downloads (EG4 18kPV)\u003c\/h4\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca class=\"esk-download\" href=\"https:\/\/eg4electronics.com\/wp-content\/uploads\/2024\/04\/EG4-18KPV-12LV-Spec-Sheet.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV Spec Sheet \u003c\/a\u003e \u003ca class=\"esk-download\" href=\"https:\/\/eg4electronics.com\/wp-content\/uploads\/2024\/04\/EG4-18KPV-12LV-Manual-1.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV User Manual \u003c\/a\u003e \u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4-18KPV-12LV-Certification.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UL 1741 Certificate \u003c\/a\u003e \u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/18KPV-12LV_1741_CRD_PCS_240425065GZU-002_-Test-Verification-of-Conformity_Security.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UL 1741 CRD PCS Test Verification \u003c\/a\u003e \u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/RSD-Initiator-Install-Instructions-EG4-18kPV-Version-1-External.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Rapid Shutdown Wiring Guide \u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ FOOTER ============ --\u003e\n\u003csection class=\"esk-footer\"\u003e\n\u003cp\u003eETHOS batteries backed by a \u003cstrong\u003e12-year warranty\u003c\/strong\u003e; EG4 18kPV inverters backed by a \u003cstrong\u003e10-year warranty\u003c\/strong\u003e. This system qualifies for the 30% Federal Solar Tax Credit.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"BigBattery","offers":[{"title":"Default Title","offer_id":40640745439287,"sku":"K0959","price":14969.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/30-kWh-x6-Batteries-KIT0959-V2.webp?v=1752163223"},{"product_id":"eg4-12kw-18kpv-hybrid-inverter","title":"EG4 12kW (18kPV) 120V\/240V Hybrid Inverter","description":"\u003cdiv class=\"esk-d2\"\u003e\n\u003cdiv class=\"esk-hero\"\u003e\n\u003cp class=\"esk-eyebrow\"\u003eInverter · 12,000W · 18,000W Solar\u003c\/p\u003e\n\u003ch2\u003eEG4 12kW (18kPV) 120V\/240V Hybrid Inverter\u003c\/h2\u003e\n\u003cp class=\"esk-lead\"\u003eIntroducing the advanced \u003cstrong\u003e12K (18kPV) Hybrid Inverter\u003c\/strong\u003e from EG4 - a versatile, all-in-one solution designed to meet the demands of even the most robust home power systems. With a rated power of \u003cstrong\u003e12,000W\u003c\/strong\u003e and the ability to support \u003cstrong\u003ePV arrays\u003c\/strong\u003e up to \u003cstrong\u003e18,000W\u003c\/strong\u003e, this high-performance inverter ensures reliable energy management. Its \u003cstrong\u003eplug-and-play installation\u003c\/strong\u003e makes setup a breeze, while the \u003cstrong\u003eLCD touch screen interface\u003c\/strong\u003e and \u003cstrong\u003eremote monitoring capabilities\u003c\/strong\u003e provide easy control and enhanced system visibility. Equipped with \u003cstrong\u003e3 MPPT inputs\u003c\/strong\u003e, \u003cstrong\u003ebuilt-in circuit breakers\u003c\/strong\u003e, and an \u003cstrong\u003eintegrated UPS module\u003c\/strong\u003e, this inverter ensures seamless transitions between power sources in just \u003cstrong\u003e15-30ms\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-rays\"\u003e\u003csvg viewbox=\"0 0 960 22\" preserveaspectratio=\"none\" aria-hidden=\"true\"\u003e\u003cpath d=\"M0,11 L30,4 M40,11 L65,2 M75,11 L95,5 M110,11 L125,3 M140,11 L160,6\" stroke=\"#246AAF\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003cpath d=\"M820,11 L840,3 M855,11 L875,5 M885,11 L905,2 M920,11 L935,6 M945,11 L960,4\" stroke=\"#36AF24\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-stats\"\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e12,000W\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eRated Output\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e18,000W\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eSolar Array\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e18,000W\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eMax Solar Input\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e48V\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eSystem Voltage\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection class=\"esk-overview\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eOverview\u003c\/span\u003e\u003cfigure class=\"esk-fig\"\u003e\u003cimg alt=\"On the left is the EG4 12kW (18kPV) 120V\/240V Hybrid Inverter by EG4, featuring energy management, 18kW PV input, a 200A wire box, remote monitoring, a 10-year warranty, and key certifications.\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/top-banner-dark-1.jpg?v=1726739511\"\u003e\u003c\/figure\u003e\u003cp\u003eThe lightweight, transformer-free design maximizes energy efficiency, reducing idle power consumption without sacrificing surge capacity or line balance. Designed for flexibility, this \u003cstrong\u003e12K inverter\u003c\/strong\u003e supports various working modes and system configurations, making it ideal for enhancing your \u003cstrong\u003esolar setup\u003c\/strong\u003e or upgrading an off-grid \u003cstrong\u003eESS system\u003c\/strong\u003e. To explore more options and find the inverter that fits your needs, check out our full \u003ca href=\"\/collections\/split-phase-inverters\" title=\"240VAC Inverters\"\u003e240VAC Inverters\u003c\/a\u003e collection. Features like \u003cstrong\u003esmart load control\u003c\/strong\u003e, \u003cstrong\u003eAC coupling\u003c\/strong\u003e, and \u003cstrong\u003epeak shaving\u003c\/strong\u003e ensure your home remains protected against grid instability and blackouts while delivering significant savings on your electric bills.\u003c\/p\u003e\n\u003cp\u003eOptimize your home’s power today with the state-of-the-art \u003cstrong\u003e12K (18kPV) Hybrid Inverter \u0026amp; Charger\u003c\/strong\u003e from EG4!\u003c\/p\u003e\n\u003cfigure class=\"esk-fig\"\u003e\u003cimg alt=\"Promotional banner for EG4 Smart Monitoring software, showing a phone, tablet, and laptop with the app UI. Icons highlight remote monitoring, live data, energy management, device control, and support for EG4 12kW (18kPV) Hybrid Inverter.\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/monitoring-banner-copy1-1.jpg?v=1726739555\"\u003e\u003c\/figure\u003e\u003c\/section\u003e\u003csection class=\"esk-sec esk-features alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eFeatures\u003c\/span\u003e\u003ch2 class=\"esk-sec-title\"\u003eFeatures\u003c\/h2\u003e\n\u003cul class=\"esk-checks\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile Working Modes\u003c\/strong\u003e to suit different solar and off-grid setups.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmart Load Control\u003c\/strong\u003e for efficient power distribution and energy savings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAC Coupling Capability\u003c\/strong\u003e for seamless integration into existing systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePeak Shaving Function\u003c\/strong\u003e reduces demand during peak usage, saving on energy costs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriple MPPT Inputs\u003c\/strong\u003e for maximum solar energy capture and efficiency.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-In Circuit Breakers\u003c\/strong\u003e provide enhanced safety and overload protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated UPS Module\u003c\/strong\u003e ensures continuous power with fast, reliable transitions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeamless Switching\u003c\/strong\u003e between power sources in under 30ms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Frequency Split-Phase Output\u003c\/strong\u003e for improved power distribution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLCD Touch Screen Interface\u003c\/strong\u003e for easy system management and monitoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote Monitoring\u003c\/strong\u003e for convenient system control from anywhere.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Parallelability\u003c\/strong\u003e allows expansion up to 120kW for larger installations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv class=\"esk-video\"\u003e\u003ciframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/fOUDXZC6Ycs?si=nlc3aSxfseg_ljCB\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-sec esk-prose\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eApplications\u003c\/span\u003e\u003ch2 class=\"esk-sec-title\"\u003eCompatibility\u003c\/h2\u003e\n\u003cul class=\"esk-checks\"\u003e\n\u003cli\u003e\u003cstrong\u003e48V Battery Systems\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eOff-Grid Backup Systems\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eResidential Solar Systems\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eEmergency Power Systems\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eAC Coupled UPS Systems\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cfigure class=\"esk-fig\"\u003e\u003cimg alt=\"A bearded man in glasses smiles beside text highlighting the EG4 12kW (18kPV) 120V\/240V Hybrid Inverter with remote commissioning, energy management, and a standard 10-year warranty. A yellow shield reads “Service Guaranteed.”.\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/serviceguarantee2-new.jpg?v=1726739577\"\u003e\u003c\/figure\u003e\u003c\/section\u003e\u003csection class=\"esk-sec esk-specs alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eData\u003c\/span\u003e\u003ch2 class=\"esk-sec-title\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv class=\"esk-table-wrap\"\u003e\u003ctable class=\"esk-spec-table\"\u003e\n\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power\u003c\/td\u003e\n\u003ctd\u003e12,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Voltage\u003c\/td\u003e\n\u003ctd\u003e120V AC \/ 240V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Frequency\u003c\/td\u003e\n\u003ctd\u003e50 Hz \/ 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Continuous AC Current\u003c\/td\u003e\n\u003ctd\u003e50A @ 240V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. AC Input Power\u003c\/td\u003e\n\u003ctd\u003e12,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. AC Bypass\u003c\/td\u003e\n\u003ctd\u003e200A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e180 - 270V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage\u003c\/td\u003e\n\u003ctd\u003e120V AC \/ 240V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Continuous Output Current\u003c\/td\u003e\n\u003ctd\u003e50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Frequency\u003c\/td\u003e\n\u003ctd\u003e50 Hz \/ 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge Capacity (with PV)\u003c\/td\u003e\n\u003ctd\u003e14,700W (10 min) \/ 15,500W (5 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge Capacity (without PV)\u003c\/td\u003e\n\u003ctd\u003e13,500W (10 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Continuous Line Wattage\u003c\/td\u003e\n\u003ctd\u003e6,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Factor\u003c\/td\u003e\n\u003ctd\u003e0.99 (Full Load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReactive Power Adjustment Range\u003c\/td\u003e\n\u003ctd\u003e-0.8 ~ 0.8 Leading Adjustable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Harmonic Distortion\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;5% (Full Load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransfer Time\u003c\/td\u003e\n\u003ctd\u003e10 - 20 ms (Single) \/ 20 ms (Parallel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Continuous Output Current (Backup)\u003c\/td\u003e\n\u003ctd\u003e50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Bypass (Generator)\u003c\/td\u003e\n\u003ctd\u003e90A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Voltage (Backup)\u003c\/td\u003e\n\u003ctd\u003e120V AC \/ 240V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power (Backup)\u003c\/td\u003e\n\u003ctd\u003e12,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Continuous Line Wattage (Backup)\u003c\/td\u003e\n\u003ctd\u003e8,000W (per 120V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Voltage Range (Backup)\u003c\/td\u003e\n\u003ctd\u003e180 - 270V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Frequency (Backup)\u003c\/td\u003e\n\u003ctd\u003e50 Hz \/ 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Output Power (with PV)\u003c\/td\u003e\n\u003ctd\u003e14,700W (10 min) \/ 15,500W (5 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Output Power (without PV)\u003c\/td\u003e\n\u003ctd\u003e13,500W (10 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal Harmonic Distortion (Backup)\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitching Time (Backup)\u003c\/td\u003e\n\u003ctd\u003e10 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating \/ Storage Temperature Range\u003c\/td\u003e\n\u003ctd\u003e-13ºF - 140ºF (-25ºC - 60ºC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAltitude\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;6,561 ft (2000 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelative Humidity\u003c\/td\u003e\n\u003ctd\u003e0 - 100%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Noise Emission\u003c\/td\u003e\n\u003ctd\u003e68 dB @ 3 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eRS485 \/ CANBus \/ WiFi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Parallel Connections\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cfigure class=\"esk-fig\"\u003e\u003cimg alt=\"The EG4 12kW (18kPV) 120V\/240V Hybrid Inverter features 18,000W PV input, 21,000W max, AC-coupling, pure sine wave, 12,000W output, energy management, stackable design \u0026amp; remote monitoring. Power That’s Unstoppable.\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/sinewave1.jpg?v=1726739604\"\u003e\u003c\/figure\u003e\u003cfigure class=\"esk-fig\"\u003e\u003cimg alt=\"Close-up of an EG4 200A wire box with breakers and labeled components—battery\/load breakers, generator\/grid input, relays, comm ports, PV connections—perfect for EG4 12kW (18kPV) Hybrid Inverter energy management or remote monitoring.\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/wire-box-banner.jpg?v=1726739621\"\u003e\u003c\/figure\u003e\u003c\/section\u003e\u003csection class=\"esk-sec esk-docs\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eAdditional Documentation\u003c\/span\u003e\u003ch2 class=\"esk-sec-title\"\u003eAdditional Documentation\u003c\/h2\u003e\n\u003cdiv class=\"esk-table-wrap\"\u003e\u003ctable class=\"esk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpec Sheet:\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4-18KPV-12LV-Spec-Sheet.pdf\"\u003eClick Here\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUser Manual:\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4-18KPV-12LV-Manual-1.pdf\"\u003eClick Here\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRapid Shut Down Wiring Guide:\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/RSD-Initiator-Install-Instructions-EG4-18kPV-Version-1-External.pdf\"\u003eClick Here\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUL1741 Certificate:\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4-18KPV-12LV-UL1741-Certification.pdf\"\u003eClick Here\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003c\/section\u003e\u003cdiv class=\"esk-footer\"\u003e\u003cp\u003e\u003cstrong\u003eFree shipping\u003c\/strong\u003e within the contiguous USA · \u003cstrong\u003e$0 sales tax\u003c\/strong\u003e in most states · Questions? Call \u003ca href=\"tel:+13073177213\"\u003e+1 307 317 7213\u003c\/a\u003e\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"EG4","offers":[{"title":"Default Title","offer_id":41275069595703,"sku":"INV024","price":4898.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/EG4-12K-18kPV-Inverter-front-V2.png?v=1746931879"},{"product_id":"eg4-powerpro-12kw-14-3kwh-system","title":"EG4 PowerPro 12kW 14.3kWh 48V System","description":"\u003cdiv class=\"esk-d2\"\u003e\n\u003cdiv class=\"esk-hero\"\u003e\n\u003cp class=\"esk-eyebrow\"\u003ePower Station · 12,000W · 14,340Wh\u003c\/p\u003e\n\u003ch2\u003eEG4 PowerPro 12kW 14.3kWh 48V System\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-rays\"\u003e\u003csvg viewbox=\"0 0 960 22\" preserveaspectratio=\"none\" aria-hidden=\"true\"\u003e\u003cpath d=\"M0,11 L30,4 M40,11 L65,2 M75,11 L95,5 M110,11 L125,3 M140,11 L160,6\" stroke=\"#246AAF\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003cpath d=\"M820,11 L840,3 M855,11 L875,5 M885,11 L905,2 M920,11 L935,6 M945,11 L960,4\" stroke=\"#36AF24\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-stats\"\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e12,000W\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eRated Output\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e14,340Wh\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eBattery Capacity\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e18,000W\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eMax Solar Input\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e48V\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eSystem Voltage\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003csection class=\"esk-overview\"\u003e\u003cfigure class=\"esk-fig\"\u003e\u003cimg alt=\"A white BigBattery EG4 PowerPro 12kW 14.3kWh 48V system is installed between two windows on a house exterior. Text reads: “Seamless Integration. Partner with the EG4 18Kpv using the optional conduit box accessory.”.\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/18kpv-upsell-fixed-gradient.jpg?v=1729010311\"\u003e\u003c\/figure\u003e\u003c\/section\u003e\u003csection class=\"esk-sec esk-overview alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eOverview\u003c\/span\u003e\u003ch2 class=\"esk-sec-title\"\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eIntroducing the \u003cstrong\u003eEG4 PowerPro\u003c\/strong\u003e, a \u003cstrong\u003ehigh-capacity, all-weather residential energy storage system (ESS)\u003c\/strong\u003e that is set to transform power storage for homes across America. With a \u003cstrong\u003e14.34kWh capacity\u003c\/strong\u003e, this wall-mountable ESS is the perfect solution for \u003cstrong\u003egrid-tied power\u003c\/strong\u003e in tiny homes, cabins, family homes, mansions, and office buildings. Backed by industry-leading certifications including \u003cstrong\u003eUL9540, UL9540A\u003c\/strong\u003e, and \u003cstrong\u003eUL1973\u003c\/strong\u003e, the PowerPro delivers unparalleled safety, reliability, and advanced performance.\u003c\/p\u003e\u003c\/section\u003e\u003csection class=\"esk-sec esk-features\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eFeatures\u003c\/span\u003e\u003ch2 class=\"esk-sec-title\"\u003eFeatures\u003c\/h2\u003e\n\u003cul class=\"esk-checks\"\u003e\n\u003cli\u003e\n\u003cstrong\u003e14.34kWh high-capacity energy storage\u003c\/strong\u003e ideal for grid-tied power in a variety of residential and commercial spaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWall-mountable design\u003c\/strong\u003e with all necessary hardware for easy installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIP65-rated all-weather casing\u003c\/strong\u003e for both indoor and outdoor use\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Battery Management System (BMS)\u003c\/strong\u003e with auto cell-balancing and a self-heating function for long-term safety and performance in all conditions\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInteractive LED display\u003c\/strong\u003e for real-time monitoring of system status and performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFull CANBus and RS485 communication protocols\u003c\/strong\u003e for seamless system integration and monitoring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal fire extinguishing unit\u003c\/strong\u003e for added safety, providing peace of mind whether installed indoors or outdoors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEngineered to last up to 8,000 cycles at 80% depth of discharge (DoD)\u003c\/strong\u003e, ensuring a lifespan of \u003cstrong\u003e10+ years\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003csection class=\"esk-sec esk-prose alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eDetails\u003c\/span\u003e\u003ch2 class=\"esk-sec-title\"\u003eDurability and Safety\u003c\/h2\u003e\n\u003cul class=\"esk-checks\"\u003e\n\u003cli\u003eEquipped with \u003cstrong\u003ean IP65-rated casing\u003c\/strong\u003e to withstand all weather conditions\u003c\/li\u003e\n\u003cli\u003eIntegrated \u003cstrong\u003econduit box\u003c\/strong\u003e for clean and easy cable management\u003c\/li\u003e\n\u003cli\u003eEngineered for \u003cstrong\u003eeffortless wall installation\u003c\/strong\u003e with all necessary hardware included\u003c\/li\u003e\n\u003cli\u003eSupports \u003cstrong\u003eup to 8,000 cycles at 80% DoD\u003c\/strong\u003e, providing a reliable, long-lasting solution for home power storage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cfigure class=\"esk-fig\"\u003e\u003cimg alt=\"A black and silver BigBattery EG4 PowerPro 12kW 14.3kWh 48V system is displayed with key features, ideal for residential energy storage, offering 12kW output, remote monitoring, and seamless compatibility with EG4 PowerPro components.\" decoding=\"async\" loading=\"lazy\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/top-banner-dark-1_e9b60981-2e06-4d3d-a880-cd34d15314e2.jpg?v=1729010344\"\u003e\u003c\/figure\u003e\u003c\/section\u003e\u003csection class=\"esk-sec esk-specs\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eData\u003c\/span\u003e\u003ch2 class=\"esk-sec-title\"\u003eSpecifications\u003c\/h2\u003e\n\u003cdiv class=\"esk-table-wrap\"\u003e\u003ctable class=\"esk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSKU\u003c\/td\u003e\n\u003ctd\u003eK0756\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNo. of MPPTs\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs per MPPT\u003c\/td\u003e\n\u003ctd\u003e2 (MPPT 1) \/ 1 (MPPT 2 \u0026amp; 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Input Current\u003c\/td\u003e\n\u003ctd\u003e25A (MPPT 1) \/ 15A (MPPT 2 \u0026amp; 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Short Circuit Input Current\u003c\/td\u003e\n\u003ctd\u003e31A (MPPT 1) \/ 19A (MPPT 2 \u0026amp; 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC Input Voltage Range\u003c\/td\u003e\n\u003ctd\u003e100 - 600V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT Operating Voltage Range\u003c\/td\u003e\n\u003ctd\u003e120 - 500V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. PV Array Power\u003c\/td\u003e\n\u003ctd\u003e18000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Input Voltage\u003c\/td\u003e\n\u003ctd\u003e120V AC \/ 240V AC (120V AC \/ 208V AC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Frequency\u003c\/td\u003e\n\u003ctd\u003e50 Hz \/ 60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Continuous Line Wattage\u003c\/td\u003e\n\u003ctd\u003e8000W (per 120V line)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC Bypass\u003c\/td\u003e\n\u003ctd\u003e200A (Grid) \/ 90A (Generator)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransfer Time\u003c\/td\u003e\n\u003ctd\u003e10 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Continuous Output Current\u003c\/td\u003e\n\u003ctd\u003e50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power\u003c\/td\u003e\n\u003ctd\u003e12000W @ 240V \/ 10400W @ 208V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge Capacity\u003c\/td\u003e\n\u003ctd\u003e14700W (10 min) \/ 15500W (5 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Continuous Output Current (Battery Only)\u003c\/td\u003e\n\u003ctd\u003e42.6A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput Power (Battery Only)\u003c\/td\u003e\n\u003ctd\u003e10200W @ 240V\/208V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge Capacity (Battery Only)\u003c\/td\u003e\n\u003ctd\u003e15000W (10 sec)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal Voltage\u003c\/td\u003e\n\u003ctd\u003e51.2V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAh Capacity\u003c\/td\u003e\n\u003ctd\u003e280Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ekWh Capacity\u003c\/td\u003e\n\u003ctd\u003e14.34kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Charge \/ Discharge Current\u003c\/td\u003e\n\u003ctd\u003e200A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating \/ Storage Temperature Range\u003c\/td\u003e\n\u003ctd\u003e-13ºF - 140ºF (-25ºC - 60ºC)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAltitude\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;6,561 ft (2000 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTypical Noise Emission\u003c\/td\u003e\n\u003ctd\u003e68 dB @ 3 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eRS485 \/ CANBus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdle Consumption\u003c\/td\u003e\n\u003ctd\u003e~70W (Normal) \/ ~18W (Standby Mode)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Efficiency (PV to Grid)\u003c\/td\u003e\n\u003ctd\u003e97.50%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. Efficiency (Battery to Grid)\u003c\/td\u003e\n\u003ctd\u003e94%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Weight\u003c\/td\u003e\n\u003ctd\u003e308.6 lbs (140 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Dimensions (DxWxH)\u003c\/td\u003e\n\u003ctd\u003e9.1 x 22.3 x 34.6 in (231 x 566.5 x 879 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInverter Weight\u003c\/td\u003e\n\u003ctd\u003e121 lbs (55 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInverter Dimensions (DxWxH)\u003c\/td\u003e\n\u003ctd\u003e11.2 x 20.5 x 34.3 in (285 x 520 x 871 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConduit Box Weight\u003c\/td\u003e\n\u003ctd\u003e16.6 lbs (7.5 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConduit Box Dimensions (DxWxH)\u003c\/td\u003e\n\u003ctd\u003e9.1 x 24 x 10.6 in (231 x 610 x 269 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-video\"\u003e\u003ciframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/lmilxlnt9Ms?si=OWSZuB1inoWA1ARu\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-sec esk-docs alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eAdditional Documentation\u003c\/span\u003e\u003ch2 class=\"esk-sec-title\"\u003eAdditional Documentation\u003c\/h2\u003e\n\u003cdiv class=\"esk-table-wrap\"\u003e\u003ctable class=\"esk-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem Spec Sheet:\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4-PowerPro-WallMount-AW-ESS-Spec-Sheet-1.0.pdf\"\u003eClick Here\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery Spec Sheet:\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4-14.3kWh-PowerPro-WallMount-AW-Spec-Sheet.pdf\"\u003eClick Here\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInverter Spec Sheet:\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4-18KPV-12LV-Spec-Sheet.pdf\"\u003eClick Here\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery User Manual:\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4-14.3kWh-PowerPro-WallMount-AW-Manual.pdf\"\u003eClick Here\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInverter User Manual:\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4-18KPV-12LV-Manual-1.pdf\"\u003eClick Here\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUL9540 Certificate:\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/UL9540-PP-WallMount-AW18kPV-ESS-Certificate-of-Compliance.pdf\"\u003eClick Here\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\u003c\/section\u003e\u003cdiv class=\"esk-footer\"\u003e\u003cp\u003e\u003cstrong\u003eFree shipping\u003c\/strong\u003e within the contiguous USA · \u003cstrong\u003e$0 sales tax\u003c\/strong\u003e in most states · Questions? Call \u003ca href=\"tel:+13073177213\"\u003e+1 307 317 7213\u003c\/a\u003e\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BigBattery","offers":[{"title":"Default Title","offer_id":41321055977527,"sku":"K0756","price":9038.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/1.-1-EG4-18KPV1-EG4-PowerPro.png?v=1746931796"},{"product_id":"eg4-powerpro-48v-14-3kwh-280ah-lifepo4-battery","title":"EG4 PowerPro 48V 14.3kWh 280Ah LiFePO4 Battery","description":"\u003cdiv class=\"esk-pd esk-pd-b eg4awbatt-pd\"\u003e\n\u003c!-- ============ HERO ============ --\u003e\n\u003csection class=\"esk-hero\"\u003e\n\u003cp class=\"esk-eyebrow\"\u003e48V LiFePO₄ Battery · 14.3kWh · IP65 All-Weather\u003c\/p\u003e\n\u003ch2\u003e14.3kWh of All-Weather Battery Storage, Built for 8,000+ Cycles\u003c\/h2\u003e\n\u003cp class=\"esk-lead\"\u003eThe EG4 280Ah All-Weather battery banks 14.3kWh of LiFePO₄ storage behind a 200A continuous discharge rating, sealed inside an IP65 enclosure rated for direct outdoor installation. It's the storage half of a system — pair it with a compatible EG4 or BigBattery inverter — backed by integrated self-heating, dual fire arrestors, an emergency stop, and a 10-year manufacturer's warranty.\u003c\/p\u003e\n\u003cdiv class=\"esk-divider\" aria-hidden=\"true\"\u003e\u003csvg viewbox=\"0 0 600 20\" preserveaspectratio=\"none\"\u003e\u003cpath d=\"M0,10 Q25,-4 50,10 T100,10 T150,10 T200,10 T250,10 T300,10 T350,10 T400,10 T450,10 T500,10 T550,10 T600,10\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ STATS ============ --\u003e\n\u003csection class=\"esk-stats\"\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e14.3kWh\u003c\/span\u003e\u003cspan class=\"label\"\u003eUsable Capacity\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e10,240W\u003c\/span\u003e\u003cspan class=\"label\"\u003eMax Cont. Discharge\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e8,000+\u003c\/span\u003e\u003cspan class=\"label\"\u003eCycles @ 80% DoD\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003eIP65\u003c\/span\u003e\u003cspan class=\"label\"\u003eAll-Weather Rated\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ FEATURES ============ --\u003e\n\u003csection class=\"esk-features\"\u003e\n\u003ch3\u003eWhat Makes This Battery Different\u003c\/h3\u003e\n\u003cdiv class=\"esk-feature-grid\"\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003crect x=\"2\" y=\"8\" width=\"17\" height=\"9\" rx=\"2\"\u003e\u003c\/rect\u003e\u003crect x=\"19\" y=\"11\" width=\"2.5\" height=\"3\" rx=\"1\" fill=\"currentColor\" stroke=\"none\"\u003e\u003c\/rect\u003e\u003crect x=\"5\" y=\"10.3\" width=\"4\" height=\"4.4\" rx=\"0.6\" fill=\"currentColor\" stroke=\"none\"\u003e\u003c\/rect\u003e\u003c\/svg\u003e\n\u003ch4\u003e14.3kWh LiFePO₄ Capacity\u003c\/h4\u003e\n\u003cp\u003eHigh-density lithium iron phosphate storage in a single wall-mount module, sized to cover a serious chunk of a home's daily use.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"currentColor\" aria-hidden=\"true\"\u003e\u003cpath d=\"M13 2 4 14h6l-1 8 9-12h-6l1-8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003e200A Continuous Discharge\u003c\/h4\u003e\n\u003cp\u003eDelivers up to 10,240W continuously (200A for 30 minutes at peak), enough for demanding residential loads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M4 12a8 8 0 0 1 14-5.3M20 12a8 8 0 0 1-14 5.3\"\u003e\u003c\/path\u003e\u003cpath d=\"M18 3v4h-4M6 21v-4h4\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003e8,000+ Cycle Life\u003c\/h4\u003e\n\u003cp\u003eRated for 8,000+ charge cycles at 80% depth of discharge — years of daily cycling before capacity meaningfully fades.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3a2 2 0 0 0-2 2v9.1a4 4 0 1 0 4 0V5a2 2 0 0 0-2-2Z\"\u003e\u003c\/path\u003e\u003cline x1=\"12\" y1=\"7\" x2=\"12\" y2=\"14\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\n\u003ch4\u003eIntegrated Self-Heating\u003c\/h4\u003e\n\u003cp\u003eInternal heating elements keep the cells within charge and discharge range through cold snaps, protecting both performance and lifespan.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 2 4 5v6c0 5 3.4 8.4 8 9.9 4.6-1.5 8-4.9 8-9.9V5l-8-3Z\"\u003e\u003c\/path\u003e\u003cpath d=\"M12 8c-1.5 2-2.5 3.3-2.5 4.5a2.5 2.5 0 0 0 5 0C14.5 11.3 13.5 10 12 8Z\" fill=\"currentColor\" stroke=\"none\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eIP65 All-Weather Enclosure\u003c\/h4\u003e\n\u003cp\u003eSealed against rain, dust, and outdoor exposure, so it doesn't need a dedicated climate-controlled equipment room.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg class=\"esk-accent-2\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M8 3h8l5 5v8l-5 5H8l-5-5V8l5-5z\"\u003e\u003c\/path\u003e\u003cline x1=\"9\" y1=\"9\" x2=\"15\" y2=\"15\"\u003e\u003c\/line\u003e\u003cline x1=\"15\" y1=\"9\" x2=\"9\" y2=\"15\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\n\u003ch4\u003eDual Fire Arrestors + E-Stop\u003c\/h4\u003e\n\u003cp\u003eBuilt-in fire arrestors and a manual emergency stop add a physical layer of safety on top of standard BMS protections.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 2 4 5v6c0 5 3.4 8.4 8 9.9 4.6-1.5 8-4.9 8-9.9V5l-8-3Z\"\u003e\u003c\/path\u003e\u003cpath d=\"M13 7 8 13h3l-1 4 5-6h-3l1-4z\" fill=\"currentColor\" stroke=\"none\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eEMP Protection\u003c\/h4\u003e\n\u003cp\u003eIncluded as part of the battery's build to help guard the internal electronics against certain electromagnetic disturbances.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003crect x=\"3\" y=\"5\" width=\"18\" height=\"12\" rx=\"1.5\"\u003e\u003c\/rect\u003e\u003cpath d=\"M8 20h8M12 17v3\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eLCD Monitoring \u0026amp; Quick-Connect\u003c\/h4\u003e\n\u003cp\u003eAn onboard LCD shows real-time BMS status, and quick-connect terminals simplify both first install and later expansion.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cdiv class=\"esk-divider\" style=\"background: var(--ink-2); color: var(--accent); opacity: 0.7;\" aria-hidden=\"true\"\u003e\u003csvg viewbox=\"0 0 600 20\" preserveaspectratio=\"none\"\u003e\u003cpath d=\"M0,10 Q25,-4 50,10 T100,10 T150,10 T200,10 T250,10 T300,10 T350,10 T400,10 T450,10 T500,10 T550,10 T600,10\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003c!-- ============ NARRATIVE ============ --\u003e\n\u003csection class=\"esk-narrative\"\u003e\n\u003ch3\u003eThe Storage Half of the System\u003c\/h3\u003e\n\u003cp\u003eThis battery doesn't do anything on its own — it needs a compatible inverter to convert its stored DC power into usable AC electricity. What it brings to that pairing is capacity and durability: 14.3kWh per module, a 200A continuous discharge rating, and a cycle life rated past 8,000 charges at 80% depth of discharge, which works out to years of daily use before capacity meaningfully declines.\u003c\/p\u003e\n\u003cp\u003eThe IP65 enclosure and integrated self-heating mean it can go in places an indoor-only battery can't — a garage, a shed, or fully outdoors — while still charging and discharging reliably through cold weather. Dual fire arrestors, a manual E-Stop, and EMP protection layer onto the standard BMS safeguards most lithium batteries already carry, and the whole thing is backed by a 10-year manufacturer's warranty.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- ============ SPECS ============ --\u003e\n\u003csection class=\"esk-specs\"\u003e\n\u003ch3\u003eFull Specifications\u003c\/h3\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eCapacity\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal voltage\u003c\/td\u003e\n\u003ctd\u003e51.2 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry\u003c\/td\u003e\n\u003ctd\u003eLiFePO₄\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ekWh capacity\u003c\/td\u003e\n\u003ctd\u003e14.3 kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAh capacity\u003c\/td\u003e\n\u003ctd\u003e280 Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax cont. discharge rate\u003c\/td\u003e\n\u003ctd\u003e10,240 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eCharging\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMS charging voltage\u003c\/td\u003e\n\u003ctd\u003e56.0V (±0.8V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRec. charging voltage\u003c\/td\u003e\n\u003ctd\u003e56.2V (±0.2V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRec. float setting\u003c\/td\u003e\n\u003ctd\u003e54V (±0.2V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous charge current\u003c\/td\u003e\n\u003ctd\u003e140 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRec. charge current\u003c\/td\u003e\n\u003ctd\u003e60–140 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eDischarging\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous discharge current\u003c\/td\u003e\n\u003ctd\u003e140A (200A \/ 30 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRec. discharge current\u003c\/td\u003e\n\u003ctd\u003e60–140 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRec. SoC cutoff\u003c\/td\u003e\n\u003ctd\u003e20%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInternal temp cutoffs (heater)\u003c\/td\u003e\n\u003ctd\u003eOn ≤32°F \/ Off ≥41°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eEnvironmental\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 (all-weather)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging temp range\u003c\/td\u003e\n\u003ctd\u003e32–122°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarging temp range\u003c\/td\u003e\n\u003ctd\u003e-4–131°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage temp range\u003c\/td\u003e\n\u003ctd\u003e32–113°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating altitude\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;16,404 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003ePhysical \u0026amp; Connectivity\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (D×W×H)\u003c\/td\u003e\n\u003ctd\u003e9.1 × 22.3 × 36.1 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e308.6 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eRS485, CANBus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower consumption (heater)\u003c\/td\u003e\n\u003ctd\u003e224 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eIdentifiers \u0026amp; Warranty\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand \/ model\u003c\/td\u003e\n\u003ctd\u003eEG4 280Ah All-Weather\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCycle life\u003c\/td\u003e\n\u003ctd\u003e8,000+ @ 80% DoD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 12.5px; color: var(--muted) !important; margin-top: 18px !important;\"\u003eCertifications: UL1973, UL9540A.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- ============ WHAT'S IN THE BOX ============ --\u003e\n\u003csection class=\"esk-included\"\u003e\n\u003ch3\u003eWhat's In the Box\u003c\/h3\u003e\n\u003cul class=\"esk-included-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"n\"\u003e48V EG4 All-Weather 280Ah wall-mount battery\u003c\/span\u003e\u003cspan class=\"q\"\u003e×1\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"n\"\u003eMounting bracket\u003c\/span\u003e\u003cspan class=\"q\"\u003e×1\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"n\"\u003eX bracket\u003c\/span\u003e\u003cspan class=\"q\"\u003e×1\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"n\"\u003eExpansion bolts\u003c\/span\u003e\u003cspan class=\"q\"\u003e×6\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"n\"\u003eBattery-to-inverter power cables (3.3 ft, red \u0026amp; black)\u003c\/span\u003e\u003cspan class=\"q\"\u003e×1\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"n\"\u003eBattery-to-inverter comm cable (5 ft)\u003c\/span\u003e\u003cspan class=\"q\"\u003e×1\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- ============ COMPATIBILITY ============ --\u003e\n\u003csection class=\"esk-compat\"\u003e\n\u003ch3\u003eInverter Compatibility\u003c\/h3\u003e\n\u003cp\u003eThis battery needs a compatible inverter to function — which inverters qualify depends on whether the install is grid-tied (requiring UL 9540 certification) or fully off-grid.\u003c\/p\u003e\n\u003cdiv class=\"esk-compat-groups\"\u003e\n\u003cdiv class=\"esk-compat-group\"\u003e\n\u003ch4\u003eGrid-Tied Installs\u003c\/h4\u003e\n\u003cp class=\"sub\"\u003eUL 9540 certified + closed-loop comms\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEG4 12kPV\u003c\/li\u003e\n\u003cli\u003eEG4 18kPV\u003c\/li\u003e\n\u003cli\u003eEG4 FlexBOSS18\u003c\/li\u003e\n\u003cli\u003eEG4 FlexBOSS21\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-compat-group\"\u003e\n\u003ch4\u003eOff-Grid Installs\u003c\/h4\u003e\n\u003cp class=\"sub\"\u003eClosed-loop comms, non-UL 9540\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAll BigBattery APEX inverters\u003c\/li\u003e\n\u003cli\u003eAll EG4 inverters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ FAQ ============ --\u003e\n\u003csection class=\"esk-faq\"\u003e\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDoes this come with an inverter?\u003c\/summary\u003e\n\u003cp\u003eNo — this listing is the battery only. It needs a compatible inverter to convert its stored power into usable electricity; see the compatibility section above for which inverters qualify for grid-tied versus off-grid installs.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan it be installed outdoors?\u003c\/summary\u003e\n\u003cp\u003eYes — it's IP65-rated with integrated self-heating, built specifically for direct outdoor or unconditioned-space installation, unlike indoor-only batteries.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat's the difference between the two compatibility lists?\u003c\/summary\u003e\n\u003cp\u003eGrid-tied installations that need UL 9540 energy storage system certification are limited to EG4's 12kPV, 18kPV, FlexBOSS18, and FlexBOSS21 inverters. Fully off-grid installs (not pursuing UL 9540 certification) have a wider range: any BigBattery APEX inverter or EG4 inverter.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow long will this battery last?\u003c\/summary\u003e\n\u003cp\u003eIt's rated for 8,000+ charge cycles at 80% depth of discharge. Cycled once a day, that works out to well over a decade of service before capacity meaningfully declines, backed by a 10-year manufacturer's warranty regardless.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat does the EMP protection actually cover?\u003c\/summary\u003e\n\u003cp\u003eIt's built into the battery as an added protective layer for the internal electronics against certain electromagnetic disturbances. For the specifics of what's shielded and to what standard, the spec sheet and manufacturer are the best source before relying on it for a specific use case.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need a licensed electrician to install it?\u003c\/summary\u003e\n\u003cp\u003eGiven the voltages and currents involved, installation should be handled by a qualified, licensed electrician or solar installer familiar with your local code requirements.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003c!-- ============ DOWNLOADS ============ --\u003e\n\u003csection class=\"esk-downloads\"\u003e\n\u003ch3\u003eDocuments \u0026amp; Downloads\u003c\/h3\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4-14.3kWh-PowerPro-WallMount-AW-Spec-Sheet.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Spec Sheet \u003c\/a\u003e \u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4-14.3kWh-PowerPro-WallMount-AW-Manual.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e User Manual \u003c\/a\u003e \u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4%C2%AE-14.3kWh-WallMount-AW-Quick-Start-Guide.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Quick Start Guide \u003c\/a\u003e \u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4-LL-WallMount-280Ah-UL9540A-Test-Verification.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UL9540A Certificate \u003c\/a\u003e \u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4%C2%AE-14.3kWh-PowerPro-WallMount-UL1973-Certificate-Of-Compliance.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UL1973 Certificate \u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ FOOTER ============ --\u003e\n\u003csection class=\"esk-footer\"\u003e\n\u003cp class=\"esk-warranty\"\u003eBacked by a \u003cstrong\u003e10-year manufacturer's warranty\u003c\/strong\u003e covering defects in materials and workmanship.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"EG4","offers":[{"title":"Default Title","offer_id":41321246523447,"sku":"FEWPP-48143-G1","price":3124.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/EG4-PowerPro-front_81318be9-7cb4-4580-8bda-c5b13237816f.png?v=1746931796"},{"product_id":"eg4-powerpro-12kw-43kwh-48v-off-grid-system","title":"EG4 PowerPro 12kW 43kWh 48V Off-Grid System","description":"\u003cdiv class=\"esk-pd esk-pd-b eg4pp1x3-pd\" style=\"text-align: start;\"\u003e\n\u003c!-- ============ HERO ============ --\u003e\n\u003csection class=\"esk-hero\"\u003e\n\u003cp class=\"esk-eyebrow\"\u003e48V Off-Grid ESS · 1× Inverter \/ 3× Battery · Standard\u003c\/p\u003e\n\u003ch2\u003e42.9kWh of Off-Grid Power From One Inverter at Its Full Battery Capacity\u003c\/h2\u003e\n\u003cp class=\"esk-lead\"\u003eThis configuration pairs one EG4 12000XP V2 hybrid inverter with three EG4 280Ah All-Weather batteries into a single closed-loop off-grid system — 42.9kWh of storage and up to 12kW of continuous output. It's the most battery capacity a single inverter on this platform supports, giving a full-size home extended autonomy without stepping up to a second inverter.\u003c\/p\u003e\n\u003cdiv aria-hidden=\"true\" class=\"esk-divider\"\u003e\u003csvg preserveaspectratio=\"none\" viewbox=\"0 0 600 20\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" d=\"M0,10 Q25,-4 50,10 T100,10 T150,10 T200,10 T250,10 T300,10 T350,10 T400,10 T450,10 T500,10 T550,10 T600,10\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ STATS ============ --\u003e\n\u003csection class=\"esk-stats\"\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e42.9kWh\u003c\/span\u003e\u003cspan class=\"label\"\u003eTotal Capacity\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e12kW\u003c\/span\u003e\u003cspan class=\"label\"\u003eContinuous Output\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e18kW\u003c\/span\u003e\u003cspan class=\"label\"\u003eSurge (5 sec)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e24kW\u003c\/span\u003e\u003cspan class=\"label\"\u003eMax PV Input\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ CONFIGURATION ============ --\u003e\n\u003csection class=\"esk-config\"\u003e\n\u003ch3\u003eWhat's In This Configuration\u003c\/h3\u003e\n\u003cp class=\"esk-config-sub\"\u003eTwo components, pre-matched and sold as one system.\u003c\/p\u003e\n\u003cdiv class=\"esk-config-grid\"\u003e\n\u003cdiv class=\"esk-config-card\"\u003e\n\u003csvg aria-hidden=\"true\" fill=\"currentColor\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M13 2 4 14h6l-1 8 9-12h-6l1-8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cp class=\"qty\"\u003eQty 1\u003c\/p\u003e\n\u003ch4\u003eEG4 12000XP V2 Hybrid Inverter\u003c\/h4\u003e\n\u003cp\u003e12,000W continuous output and 24,000W max PV input, with dual MPPT solar tracking built in.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-config-card\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003crect rx=\"2\" height=\"9\" width=\"17\" y=\"8\" x=\"2\"\u003e\u003c\/rect\u003e\u003crect stroke=\"none\" fill=\"currentColor\" rx=\"1\" height=\"3\" width=\"2.5\" y=\"11\" x=\"19\"\u003e\u003c\/rect\u003e\u003crect stroke=\"none\" fill=\"currentColor\" rx=\"0.6\" height=\"4.4\" width=\"4\" y=\"10.3\" x=\"5\"\u003e\u003c\/rect\u003e\u003c\/svg\u003e\n\u003cp class=\"qty\"\u003eQty 3\u003c\/p\u003e\n\u003ch4\u003eEG4 280Ah All-Weather Battery\u003c\/h4\u003e\n\u003cp\u003e14.3kWh of LiFePO₄ storage per module, IP65-rated with integrated self-heating and internal fire suppression.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ FEATURES ============ --\u003e\n\u003csection class=\"esk-features\"\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/1-1-scaled.webp?v=1782063074\" style=\"float: none;\" alt=\"The EG4 PowerPro 12kW 43kWh 48V Off-Grid System, branded by EG4, offers outdoor-ready energy storage (IP65 NEMA 4X, built-in heating), fourfold safety redundancy, plug \u0026amp; play modular expansion, and features the BigBattery logo in the corner.\"\u003e\u003c\/p\u003e\n\n\u003ch3\u003eWhat Makes This Configuration Different\u003c\/h3\u003e\n\u003cdiv class=\"esk-feature-grid\"\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003crect rx=\"2\" height=\"9\" width=\"17\" y=\"8\" x=\"2\"\u003e\u003c\/rect\u003e\u003crect stroke=\"none\" fill=\"currentColor\" rx=\"1\" height=\"3\" width=\"2.5\" y=\"11\" x=\"19\"\u003e\u003c\/rect\u003e\u003crect stroke=\"none\" fill=\"currentColor\" rx=\"0.6\" height=\"4.4\" width=\"4\" y=\"10.3\" x=\"5\"\u003e\u003c\/rect\u003e\u003c\/svg\u003e\n\u003ch4\u003e42.9kWh Total Capacity\u003c\/h4\u003e\n\u003cp\u003eThree 14.3kWh LiFePO₄ modules combine into a single closed-loop bank — the most storage a single inverter on this platform supports.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" fill=\"currentColor\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M13 2 4 14h6l-1 8 9-12h-6l1-8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003e12kW Continuous, 18kW Surge\u003c\/h4\u003e\n\u003cp\u003eOne EG4 12000XP V2 inverter handles the full load on its own, with 18,000W of surge headroom (5 sec) for motor starts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 2 4 5v6c0 5 3.4 8.4 8 9.9 4.6-1.5 8-4.9 8-9.9V5l-8-3Z\"\u003e\u003c\/path\u003e\u003cpath stroke=\"none\" fill=\"currentColor\" d=\"M12 8c-1.5 2-2.5 3.3-2.5 4.5a2.5 2.5 0 0 0 5 0C14.5 11.3 13.5 10 12 8Z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eAll-Weather, IP65 Batteries\u003c\/h4\u003e\n\u003cp\u003eRated for direct outdoor installation, with a sealed enclosure built to handle rain, dust, and temperature swings without a dedicated equipment room.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3a2 2 0 0 0-2 2v9.1a4 4 0 1 0 4 0V5a2 2 0 0 0-2-2Z\"\u003e\u003c\/path\u003e\u003cline y2=\"14\" x2=\"12\" y1=\"7\" x1=\"12\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\n\u003ch4\u003eIntegrated Self-Heating\u003c\/h4\u003e\n\u003cp\u003eInternal heating elements keep the batteries within operating range through cold snaps, so performance doesn't fall off in winter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003ccircle r=\"4.2\" cy=\"12\" cx=\"12\"\u003e\u003c\/circle\u003e\u003cpath d=\"M12 3v2M12 19v2M4.2 12H2.2M21.8 12h-2M5.6 5.6l1.4 1.4M17 17l1.4 1.4M18.4 5.6 17 7M7 17l-1.4 1.4\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eDual MPPT Solar Charging\u003c\/h4\u003e\n\u003cp\u003eTwo independent MPPT trackers pull up to 24,000W max, adjusting continuously as sunlight shifts through the day.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003ccircle r=\"2.5\" cy=\"12\" cx=\"6\"\u003e\u003c\/circle\u003e\u003ccircle r=\"2.5\" cy=\"12\" cx=\"18\"\u003e\u003c\/circle\u003e\u003cpath stroke-dasharray=\"2 2\" d=\"M8.5 12h7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eClosed-Loop Communication\u003c\/h4\u003e\n\u003cp\u003eBatteries and inverter share live data over RS485\/CANBus, coordinating charge and discharge automatically instead of running on fixed assumptions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" class=\"esk-accent-2\"\u003e\u003cpath d=\"M12 2 4 5v6c0 5 3.4 8.4 8 9.9 4.6-1.5 8-4.9 8-9.9V5l-8-3Z\"\u003e\u003c\/path\u003e\u003cpath d=\"M8.5 12.3 10.8 14.6 15.5 9.9\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eInternal Fire Suppression\u003c\/h4\u003e\n\u003cp\u003eEach battery module includes built-in fire suppression on top of active cell balancing and standard BMS protections.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M9 2v4M15 2v4M7 8h10v4a5 5 0 0 1-10 0V8Z\"\u003e\u003c\/path\u003e\u003cpath d=\"M12 17v4\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eSingle-Inverter Simplicity\u003c\/h4\u003e\n\u003cp\u003eOne inverter means one set of breakers and one point of communication with the battery bank — no paralleling multiple units to configure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cdiv aria-hidden=\"true\" style=\"background: var(--ink-2); color: var(--accent); opacity: 0.7;\" class=\"esk-divider\"\u003e\u003csvg preserveaspectratio=\"none\" viewbox=\"0 0 600 20\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" d=\"M0,10 Q25,-4 50,10 T100,10 T150,10 T200,10 T250,10 T300,10 T350,10 T400,10 T450,10 T500,10 T550,10 T600,10\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003c!-- ============ NARRATIVE ============ --\u003e\n\u003csection class=\"esk-narrative\"\u003e\n\u003ch3\u003eReal Capacity, Simpler Wiring\u003c\/h3\u003e\n\u003cp\u003eA single battery module covers a cabin or a light backup role; this configuration is built for something more substantial. One EG4 12000XP V2 inverter delivers 12,000W of continuous output — 18,000W surge — while three 280Ah All-Weather battery modules bank 42.9kWh of usable storage, the maximum a single inverter on this platform supports, enough for a full-size home to run through extended cloudy stretches without rationing power.\u003c\/p\u003e\n\u003cp\u003eThe All-Weather battery line is IP65-rated with integrated self-heating and internal fire suppression, so it doesn't need a climate-controlled room the way an indoor-only battery would. Because this configuration runs on a single inverter rather than multiple units in parallel, the system stays simpler too — one communication link between inverter and battery bank, one set of breakers, one unit to monitor. The inverter itself remains IP20 (indoor\/enclosed installation only) — it's the battery bank that's built for the elements here.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- ============ SPECS ============ --\u003e\n\u003csection class=\"esk-specs\"\u003e\n\u003ch3\u003eFull Specifications\u003c\/h3\u003e\n\u003cp class=\"esk-specs-unit\"\u003ePer-unit values below; this configuration uses 1 inverter and 3 batteries.\u003c\/p\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003eInverter — EG4 12000XP V2 (×1)\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eOutput\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal output power\u003c\/td\u003e\n\u003ctd\u003e12,000 W @ 240V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge capacity\u003c\/td\u003e\n\u003ctd\u003e18,000 W (5 sec)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC voltage\u003c\/td\u003e\n\u003ctd\u003e120\/240V, 120\/208V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous output current\u003c\/td\u003e\n\u003ctd\u003e50A @ 240V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower factor\u003c\/td\u003e\n\u003ctd\u003e0.99\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitching time\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;10 ms (single)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eSolar \u0026amp; Charging\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT channels\u003c\/td\u003e\n\u003ctd\u003e2 per unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax PV input\u003c\/td\u003e\n\u003ctd\u003e24,000 W (12,000W\/MPPT)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT voltage range\u003c\/td\u003e\n\u003ctd\u003e120–385 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge\/discharge current\u003c\/td\u003e\n\u003ctd\u003e250 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery voltage range\u003c\/td\u003e\n\u003ctd\u003e46.4–60 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficiency (PV to loads)\u003c\/td\u003e\n\u003ctd\u003e93.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eAC Input\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC input power\u003c\/td\u003e\n\u003ctd\u003e24,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC bypass (grid \/ gen)\u003c\/td\u003e\n\u003ctd\u003e100A \/ 90A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRec. generator size\u003c\/td\u003e\n\u003ctd\u003e6,000–15,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency\u003c\/td\u003e\n\u003ctd\u003e60 Hz (50 Hz configurable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003ePhysical \u0026amp; Other\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (each)\u003c\/td\u003e\n\u003ctd\u003e104.7 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e34.25 × 20.9 × 5.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP20 (indoor only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temp (full load)\u003c\/td\u003e\n\u003ctd\u003e32–113°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax parallel units\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003e\u003ca href=\"\/products\/eg4-powerpro-48v-14-3kwh-280ah-lifepo4-battery\"\u003eBattery — EG4 280Ah All-Weather (×3)\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eCapacity\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal voltage\u003c\/td\u003e\n\u003ctd\u003e51.2 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry\u003c\/td\u003e\n\u003ctd\u003eLiFePO₄\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ekWh capacity (each)\u003c\/td\u003e\n\u003ctd\u003e14.3 kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAh capacity (each)\u003c\/td\u003e\n\u003ctd\u003e280 Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous discharge rate\u003c\/td\u003e\n\u003ctd\u003e10,240 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eCharging\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous charge current\u003c\/td\u003e\n\u003ctd\u003e140 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous discharge current\u003c\/td\u003e\n\u003ctd\u003e140A (200A \/ 30 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRec. charge\/discharge current\u003c\/td\u003e\n\u003ctd\u003e60–140 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRec. SoC cutoff\u003c\/td\u003e\n\u003ctd\u003e20%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eEnvironmental\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 (all-weather)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging temp range\u003c\/td\u003e\n\u003ctd\u003e32–122°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarging temp range\u003c\/td\u003e\n\u003ctd\u003e-4–131°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage temp range\u003c\/td\u003e\n\u003ctd\u003e32–113°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003ePhysical \u0026amp; Other\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (each)\u003c\/td\u003e\n\u003ctd\u003e308.6 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e36.1 × 22.3 × 9.1 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eRS485, CANBus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ SCALABILITY ============ --\u003e\n\u003csection class=\"esk-scale\"\u003e\n\u003ch3\u003eOther Configurations Available\u003c\/h3\u003e\n\u003cp\u003eThis same battery and inverter platform is sold in several sizes. The row below highlighted in your brand color is the configuration this page describes — everything else is shown for reference if a customer needs a different scale.\u003c\/p\u003e\n\u003ctable class=\"esk-scale-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eTier\u003c\/th\u003e\n\u003cth\u003eInverters\u003c\/th\u003e\n\u003cth\u003eBatteries\u003c\/th\u003e\n\u003cth\u003eCapacity\u003c\/th\u003e\n\u003cth\u003eMax Output\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tier\"\u003eStandard\u003c\/td\u003e\n\u003ctd\u003e1×\u003c\/td\u003e\n\u003ctd\u003e1×\u003c\/td\u003e\n\u003ctd\u003e14.3 kWh\u003c\/td\u003e\n\u003ctd\u003e12 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tier\"\u003eStandard\u003c\/td\u003e\n\u003ctd\u003e1×\u003c\/td\u003e\n\u003ctd\u003e2×\u003c\/td\u003e\n\u003ctd\u003e28.6 kWh\u003c\/td\u003e\n\u003ctd\u003e12 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"current\"\u003e\n\u003ctd class=\"tier\"\u003eStandard\u003c\/td\u003e\n\u003ctd\u003e1×\u003c\/td\u003e\n\u003ctd\u003e3×\u003c\/td\u003e\n\u003ctd\u003e42.9 kWh\u003c\/td\u003e\n\u003ctd\u003e12 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tier\"\u003eLarge\u003c\/td\u003e\n\u003ctd\u003e2×\u003c\/td\u003e\n\u003ctd\u003e2, 4, or 6×\u003c\/td\u003e\n\u003ctd\u003e28.6–85.8 kWh\u003c\/td\u003e\n\u003ctd\u003e24 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tier\"\u003e3-Phase\u003c\/td\u003e\n\u003ctd\u003e3×\u003c\/td\u003e\n\u003ctd\u003e6×\u003c\/td\u003e\n\u003ctd\u003e85.8 kWh\u003c\/td\u003e\n\u003ctd\u003e36 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/section\u003e\n\u003c!-- ============ FAQ ============ --\u003e\n\u003csection class=\"esk-faq\"\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/EG4-Inverter-Certification-scaled-4-2048x820.webp?v=1784137145\" style=\"float: none;\" alt=\"EG4 PowerPro solar kit — product photo\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/3-1-scaled.webp?v=1782062730\" style=\"float: none;\" alt=\"A person in safety gear views a tablet next to three Intertek certificates, ETL and Intertek logos, and “Certified to Highest UL Safety Standards,” with UL9540A \u0026amp; UL1973 highlighted for the EG4 PowerPro 12kW 28.6kWh 48V Off-Grid Solar System.\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat exactly is included in this configuration?\u003c\/summary\u003e\n\u003cp\u003eOne EG4 12000XP V2 hybrid inverter and three EG4 280Ah All-Weather battery modules, pre-matched to run as a single closed-loop system — 42.9kWh of storage and up to 12kW of continuous output.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill this run my entire house?\u003c\/summary\u003e\n\u003cp\u003eIt depends on your total connected load. At 12,000W continuous (18,000W surge) it comfortably covers most full-size homes running efficient appliances, but a full load calculation is worth doing before sizing your system — particularly with well pumps, electric heat, or large HVAC compressors.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this the most storage a single inverter can handle?\u003c\/summary\u003e\n\u003cp\u003eYes — three 280Ah All-Weather batteries (42.9kWh) is the maximum this platform supports on one EG4 12000XP V2 inverter. Going beyond that means stepping up to their \"Large\" tier, which pairs a second inverter with additional batteries.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan the batteries really be installed outdoors?\u003c\/summary\u003e\n\u003cp\u003eYes — the EG4 All-Weather battery is IP65-rated with integrated self-heating, built specifically for direct outdoor or unconditioned-space installation. The inverter is IP20 and still needs a covered, indoor-equivalent location such as a garage, utility room, or power shed.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat's the warranty on this system?\u003c\/summary\u003e\n\u003cp\u003eThe batteries carry a 10-year manufacturer's warranty and the inverter carries a 5-year manufacturer's warranty — two separate coverage periods for the two components.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan it run on solar, grid, and a generator?\u003c\/summary\u003e\n\u003cp\u003eYes. The inverter accepts grid and generator input in addition to solar, with a recommended generator size of 6,000–15,000W.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need a licensed electrician to install it?\u003c\/summary\u003e\n\u003cp\u003eGiven the voltages and currents involved, installation should be handled by a qualified, licensed electrician or solar installer familiar with your local code requirements.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003c!-- ============ DOWNLOADS ============ --\u003e\n\u003csection class=\"esk-downloads\"\u003e\n\u003ch3\u003eDocuments \u0026amp; Downloads\u003c\/h3\u003e\n\u003cdiv class=\"esk-dl-block\"\u003e\n\u003cp class=\"esk-dl-group-title\"\u003eBattery — EG4 280Ah All-Weather\u003c\/p\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4-14.3kWh-PowerPro-WallMount-AW-Spec-Sheet.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Spec Sheet \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4-14.3kWh-PowerPro-WallMount-AW-Manual.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e User Manual \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4%C2%AE-14.3kWh-WallMount-AW-Quick-Start-Guide.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Quick Start Guide \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4-LL-WallMount-280Ah-UL9540A-Test-Verification.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UL9540A Certificate \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4%C2%AE-14.3kWh-PowerPro-WallMount-UL1973-Certificate-Of-Compliance.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UL1973 Certificate \u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-dl-block\"\u003e\n\u003cp class=\"esk-dl-group-title\"\u003eInverter — EG4 12000XP V2\u003c\/p\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/02\/EG4-12000XPV2-Spec-Sheet-NEW.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Spec Sheet \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/02\/EG4-12000XPV2-Manual-NEW.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e User Manual \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2025\/02\/EG4-Wifi-Dongle-Troubleshooting-Guide.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e WiFi Configuration Guide \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2025\/02\/EG4-12000XP-UL-1741-Certificate-of-Compliance.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UL1741 Certificate \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/02\/EG4-12000XP-WallMount-Indoor-280-Indoor-Battery-ESS-UL-9540-Certificate-of-Compliance-NEW.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UL9540 Certificate \u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ FOOTER ============ --\u003e\n\u003csection class=\"esk-footer\"\u003e\n\u003cp class=\"esk-warranty\"\u003eBatteries backed by a \u003cstrong\u003e10-year manufacturer's warranty\u003c\/strong\u003e; inverters backed by a \u003cstrong\u003e5-year manufacturer's warranty\u003c\/strong\u003e — both covering defects in materials and workmanship.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"EG4","offers":[{"title":"Default Title","offer_id":41321381822519,"sku":"K0767","price":12177.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/210.webp?v=1784214186"},{"product_id":"eg4-powerpro-12kw-28-6kwh-48v-off-grid-system","title":"EG4 PowerPro 12kW 28.7kWh 48V Battery Backup | Off-Grid Home Solar System","description":"\u003cdiv class=\"esk-pd esk-pd-b eg4pp1x2-pd\"\u003e\n\u003c!-- ============ HERO ============ --\u003e\n\u003csection class=\"esk-hero\"\u003e\n\u003cp class=\"esk-eyebrow\"\u003e48V Off-Grid ESS · 1× Inverter \/ 2× Battery · Standard\u003c\/p\u003e\n\u003ch2\u003e28.6kWh of Off-Grid Power From One Matched Inverter and Battery Pair\u003c\/h2\u003e\n\u003cp class=\"esk-lead\"\u003eThis configuration pairs one EG4 12000XP V2 hybrid inverter with two EG4 280Ah All-Weather batteries into a single closed-loop off-grid system — 28.6kWh of storage and up to 12kW of continuous output. It's real capacity for a full-size home or cabin, without the wiring complexity of paralleling multiple inverters together.\u003c\/p\u003e\n\u003cdiv aria-hidden=\"true\" class=\"esk-divider\"\u003e\u003csvg preserveaspectratio=\"none\" viewbox=\"0 0 600 20\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" d=\"M0,10 Q25,-4 50,10 T100,10 T150,10 T200,10 T250,10 T300,10 T350,10 T400,10 T450,10 T500,10 T550,10 T600,10\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ STATS ============ --\u003e\n\u003csection class=\"esk-stats\"\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e28.6kWh\u003c\/span\u003e\u003cspan class=\"label\"\u003eTotal Capacity\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e12kW\u003c\/span\u003e\u003cspan class=\"label\"\u003eContinuous Output\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e18kW\u003c\/span\u003e\u003cspan class=\"label\"\u003eSurge (5 sec)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e24kW\u003c\/span\u003e\u003cspan class=\"label\"\u003eMax PV Input\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ CONFIGURATION ============ --\u003e\n\u003csection class=\"esk-config\"\u003e\n\u003ch3\u003eWhat's In This Configuration\u003c\/h3\u003e\n\u003cp class=\"esk-config-sub\"\u003eTwo components, pre-matched and sold as one system.\u003c\/p\u003e\n\u003cdiv class=\"esk-config-grid\"\u003e\n\u003cdiv class=\"esk-config-card\"\u003e\n\u003csvg aria-hidden=\"true\" fill=\"currentColor\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M13 2 4 14h6l-1 8 9-12h-6l1-8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cp class=\"qty\"\u003eQty 1\u003c\/p\u003e\n\u003ch4\u003eEG4 12000XP V2 Hybrid Inverter\u003c\/h4\u003e\n\u003cp\u003e12,000W continuous output and 24,000W max PV input, with dual MPPT solar tracking built in.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-config-card\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003crect rx=\"2\" height=\"9\" width=\"17\" y=\"8\" x=\"2\"\u003e\u003c\/rect\u003e\u003crect stroke=\"none\" fill=\"currentColor\" rx=\"1\" height=\"3\" width=\"2.5\" y=\"11\" x=\"19\"\u003e\u003c\/rect\u003e\u003crect stroke=\"none\" fill=\"currentColor\" rx=\"0.6\" height=\"4.4\" width=\"4\" y=\"10.3\" x=\"5\"\u003e\u003c\/rect\u003e\u003c\/svg\u003e\n\u003cp class=\"qty\"\u003eQty 2\u003c\/p\u003e\n\u003ch4\u003eEG4 280Ah All-Weather Battery\u003c\/h4\u003e\n\u003cp\u003e14.3kWh of LiFePO₄ storage per module, IP65-rated with integrated self-heating and internal fire suppression.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ FEATURES ============ --\u003e\n\u003csection class=\"esk-features\"\u003e\n\u003ch3\u003eWhat Makes This Configuration Different\u003c\/h3\u003e\n\u003cdiv class=\"esk-feature-grid\"\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003crect rx=\"2\" height=\"9\" width=\"17\" y=\"8\" x=\"2\"\u003e\u003c\/rect\u003e\u003crect stroke=\"none\" fill=\"currentColor\" rx=\"1\" height=\"3\" width=\"2.5\" y=\"11\" x=\"19\"\u003e\u003c\/rect\u003e\u003crect stroke=\"none\" fill=\"currentColor\" rx=\"0.6\" height=\"4.4\" width=\"4\" y=\"10.3\" x=\"5\"\u003e\u003c\/rect\u003e\u003c\/svg\u003e\n\u003ch4\u003e28.6kWh Total Capacity\u003c\/h4\u003e\n\u003cp\u003eTwo 14.3kWh LiFePO₄ modules combine into a single closed-loop bank with enough stored energy to carry a full-size home overnight.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" fill=\"currentColor\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M13 2 4 14h6l-1 8 9-12h-6l1-8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003e12kW Continuous, 18kW Surge\u003c\/h4\u003e\n\u003cp\u003eOne EG4 12000XP V2 inverter handles the full load on its own, with 18,000W of surge headroom (5 sec) for motor starts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 2 4 5v6c0 5 3.4 8.4 8 9.9 4.6-1.5 8-4.9 8-9.9V5l-8-3Z\"\u003e\u003c\/path\u003e\u003cpath stroke=\"none\" fill=\"currentColor\" d=\"M12 8c-1.5 2-2.5 3.3-2.5 4.5a2.5 2.5 0 0 0 5 0C14.5 11.3 13.5 10 12 8Z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eAll-Weather, IP65 Batteries\u003c\/h4\u003e\n\u003cp\u003eRated for direct outdoor installation, with a sealed enclosure built to handle rain, dust, and temperature swings without a dedicated equipment room.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3a2 2 0 0 0-2 2v9.1a4 4 0 1 0 4 0V5a2 2 0 0 0-2-2Z\"\u003e\u003c\/path\u003e\u003cline y2=\"14\" x2=\"12\" y1=\"7\" x1=\"12\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\n\u003ch4\u003eIntegrated Self-Heating\u003c\/h4\u003e\n\u003cp\u003eInternal heating elements keep the batteries within operating range through cold snaps, so performance doesn't fall off in winter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003ccircle r=\"4.2\" cy=\"12\" cx=\"12\"\u003e\u003c\/circle\u003e\u003cpath d=\"M12 3v2M12 19v2M4.2 12H2.2M21.8 12h-2M5.6 5.6l1.4 1.4M17 17l1.4 1.4M18.4 5.6 17 7M7 17l-1.4 1.4\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eDual MPPT Solar Charging\u003c\/h4\u003e\n\u003cp\u003eTwo independent MPPT trackers pull up to 24,000W max, adjusting continuously as sunlight shifts through the day.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003ccircle r=\"2.5\" cy=\"12\" cx=\"6\"\u003e\u003c\/circle\u003e\u003ccircle r=\"2.5\" cy=\"12\" cx=\"18\"\u003e\u003c\/circle\u003e\u003cpath stroke-dasharray=\"2 2\" d=\"M8.5 12h7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eClosed-Loop Communication\u003c\/h4\u003e\n\u003cp\u003eBatteries and inverter share live data over RS485\/CANBus, coordinating charge and discharge automatically instead of running on fixed assumptions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" class=\"esk-accent-2\"\u003e\u003cpath d=\"M12 2 4 5v6c0 5 3.4 8.4 8 9.9 4.6-1.5 8-4.9 8-9.9V5l-8-3Z\"\u003e\u003c\/path\u003e\u003cpath d=\"M8.5 12.3 10.8 14.6 15.5 9.9\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eInternal Fire Suppression\u003c\/h4\u003e\n\u003cp\u003eEach battery module includes built-in fire suppression on top of active cell balancing and standard BMS protections.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M9 2v4M15 2v4M7 8h10v4a5 5 0 0 1-10 0V8Z\"\u003e\u003c\/path\u003e\u003cpath d=\"M12 17v4\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eSingle-Inverter Simplicity\u003c\/h4\u003e\n\u003cp\u003eOne inverter means one set of breakers and one point of communication with the battery bank — no paralleling multiple units to configure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cdiv aria-hidden=\"true\" style=\"background: var(--ink-2); color: var(--accent); opacity: 0.7;\" class=\"esk-divider\"\u003e\u003csvg preserveaspectratio=\"none\" viewbox=\"0 0 600 20\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" d=\"M0,10 Q25,-4 50,10 T100,10 T150,10 T200,10 T250,10 T300,10 T350,10 T400,10 T450,10 T500,10 T550,10 T600,10\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003c!-- ============ NARRATIVE ============ --\u003e\n\u003csection class=\"esk-narrative\"\u003e\n\u003ch3\u003eReal Capacity, Simpler Wiring\u003c\/h3\u003e\n\u003cp\u003eA single battery module covers a cabin or a light backup role; this configuration is built for something more substantial. One EG4 12000XP V2 inverter delivers 12,000W of continuous output — 18,000W surge — while two 280Ah All-Weather battery modules bank 28.6kWh of usable storage, enough for a full-size home to get through an evening or a cloudy stretch without rationing power.\u003c\/p\u003e\n\u003cp\u003eThe All-Weather battery line is IP65-rated with integrated self-heating and internal fire suppression, so it doesn't need a climate-controlled room the way an indoor-only battery would. Because this configuration runs on a single inverter rather than multiple units in parallel, the system stays simpler too — one communication link between inverter and battery bank, one set of breakers, one unit to monitor. The inverter itself remains IP20 (indoor\/enclosed installation only) — it's the battery bank that's built for the elements here.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- ============ SPECS ============ --\u003e\n\u003csection class=\"esk-specs\"\u003e\n\u003ch3\u003eFull Specifications\u003c\/h3\u003e\n\u003cp class=\"esk-specs-unit\"\u003ePer-unit values below; this configuration uses 1 inverter and 2 batteries.\u003c\/p\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003eInverter — EG4 12000XP V2 (×1)\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eOutput\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal output power\u003c\/td\u003e\n\u003ctd\u003e12,000 W @ 240V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge capacity\u003c\/td\u003e\n\u003ctd\u003e18,000 W (5 sec)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC voltage\u003c\/td\u003e\n\u003ctd\u003e120\/240V, 120\/208V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous output current\u003c\/td\u003e\n\u003ctd\u003e50A @ 240V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower factor\u003c\/td\u003e\n\u003ctd\u003e0.99\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitching time\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;10 ms (single)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eSolar \u0026amp; Charging\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT channels\u003c\/td\u003e\n\u003ctd\u003e2 per unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax PV input\u003c\/td\u003e\n\u003ctd\u003e24,000 W (12,000W\/MPPT)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT voltage range\u003c\/td\u003e\n\u003ctd\u003e120–385 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge\/discharge current\u003c\/td\u003e\n\u003ctd\u003e250 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery voltage range\u003c\/td\u003e\n\u003ctd\u003e46.4–60 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficiency (PV to loads)\u003c\/td\u003e\n\u003ctd\u003e93.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eAC Input\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC input power\u003c\/td\u003e\n\u003ctd\u003e24,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC bypass (grid \/ gen)\u003c\/td\u003e\n\u003ctd\u003e100A \/ 90A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRec. generator size\u003c\/td\u003e\n\u003ctd\u003e6,000–15,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency\u003c\/td\u003e\n\u003ctd\u003e60 Hz (50 Hz configurable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003ePhysical \u0026amp; Other\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (each)\u003c\/td\u003e\n\u003ctd\u003e104.7 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e34.25 × 20.9 × 5.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP20 (indoor only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temp (full load)\u003c\/td\u003e\n\u003ctd\u003e32–113°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax parallel units\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003e\u003ca href=\"\/products\/eg4-powerpro-48v-14-3kwh-280ah-lifepo4-battery\"\u003eBattery — EG4 280Ah All-Weather (×2)\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eCapacity\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal voltage\u003c\/td\u003e\n\u003ctd\u003e51.2 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry\u003c\/td\u003e\n\u003ctd\u003eLiFePO₄\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ekWh capacity (each)\u003c\/td\u003e\n\u003ctd\u003e14.3 kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAh capacity (each)\u003c\/td\u003e\n\u003ctd\u003e280 Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous discharge rate\u003c\/td\u003e\n\u003ctd\u003e10,240 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eCharging\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous charge current\u003c\/td\u003e\n\u003ctd\u003e140 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous discharge current\u003c\/td\u003e\n\u003ctd\u003e140A (200A \/ 30 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRec. charge\/discharge current\u003c\/td\u003e\n\u003ctd\u003e60–140 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRec. SoC cutoff\u003c\/td\u003e\n\u003ctd\u003e20%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eEnvironmental\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 (all-weather)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging temp range\u003c\/td\u003e\n\u003ctd\u003e32–122°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarging temp range\u003c\/td\u003e\n\u003ctd\u003e-4–131°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage temp range\u003c\/td\u003e\n\u003ctd\u003e32–113°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003ePhysical \u0026amp; Other\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (each)\u003c\/td\u003e\n\u003ctd\u003e308.6 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e36.1 × 22.3 × 9.1 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eRS485, CANBus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ SCALABILITY ============ --\u003e\n\u003csection class=\"esk-scale\"\u003e\n\u003ch3\u003eOther Configurations Available\u003c\/h3\u003e\n\u003cp\u003eThis same battery and inverter platform is sold in several sizes. The row below highlighted in your brand color is the configuration this page describes — everything else is shown for reference if a customer needs a different scale.\u003c\/p\u003e\n\u003ctable class=\"esk-scale-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eTier\u003c\/th\u003e\n\u003cth\u003eInverters\u003c\/th\u003e\n\u003cth\u003eBatteries\u003c\/th\u003e\n\u003cth\u003eCapacity\u003c\/th\u003e\n\u003cth\u003eMax Output\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tier\"\u003eStandard\u003c\/td\u003e\n\u003ctd\u003e1×\u003c\/td\u003e\n\u003ctd\u003e1×\u003c\/td\u003e\n\u003ctd\u003e14.3 kWh\u003c\/td\u003e\n\u003ctd\u003e12 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"current\"\u003e\n\u003ctd class=\"tier\"\u003eStandard\u003c\/td\u003e\n\u003ctd\u003e1×\u003c\/td\u003e\n\u003ctd\u003e2×\u003c\/td\u003e\n\u003ctd\u003e28.6 kWh\u003c\/td\u003e\n\u003ctd\u003e12 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tier\"\u003eStandard\u003c\/td\u003e\n\u003ctd\u003e1×\u003c\/td\u003e\n\u003ctd\u003e3×\u003c\/td\u003e\n\u003ctd\u003e42.9 kWh\u003c\/td\u003e\n\u003ctd\u003e12 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tier\"\u003eLarge\u003c\/td\u003e\n\u003ctd\u003e2×\u003c\/td\u003e\n\u003ctd\u003e2, 4, or 6×\u003c\/td\u003e\n\u003ctd\u003e28.6–85.8 kWh\u003c\/td\u003e\n\u003ctd\u003e24 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tier\"\u003e3-Phase\u003c\/td\u003e\n\u003ctd\u003e3×\u003c\/td\u003e\n\u003ctd\u003e6×\u003c\/td\u003e\n\u003ctd\u003e85.8 kWh\u003c\/td\u003e\n\u003ctd\u003e36 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/section\u003e\n\u003c!-- ============ FAQ ============ --\u003e\n\u003csection class=\"esk-faq\"\u003e\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat exactly is included in this configuration?\u003c\/summary\u003e\n\u003cp\u003eOne EG4 12000XP V2 hybrid inverter and two EG4 280Ah All-Weather battery modules, pre-matched to run as a single closed-loop system — 28.6kWh of storage and up to 12kW of continuous output.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill this run my entire house?\u003c\/summary\u003e\n\u003cp\u003eIt depends on your total connected load. At 12,000W continuous (18,000W surge) it comfortably covers most full-size homes running efficient appliances, but a full load calculation is worth doing before sizing your system — particularly with well pumps, electric heat, or large HVAC compressors.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I add a third battery to this same inverter later?\u003c\/summary\u003e\n\u003cp\u003eYes — a single EG4 12000XP V2 supports up to three 280Ah All-Weather batteries (42.9kWh total) before a second inverter is needed. It's worth confirming compatibility with your existing setup before ordering additional hardware.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan the batteries really be installed outdoors?\u003c\/summary\u003e\n\u003cp\u003eYes — the EG4 All-Weather battery is IP65-rated with integrated self-heating, built specifically for direct outdoor or unconditioned-space installation. The inverter is IP20 and still needs a covered, indoor-equivalent location such as a garage, utility room, or power shed.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat's the warranty on this system?\u003c\/summary\u003e\n\u003cp\u003eThe batteries carry a 10-year manufacturer's warranty and the inverter carries a 5-year manufacturer's warranty — two separate coverage periods for the two components.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan it run on solar, grid, and a generator?\u003c\/summary\u003e\n\u003cp\u003eYes. The inverter accepts grid and generator input in addition to solar, with a recommended generator size of 6,000–15,000W.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need a licensed electrician to install it?\u003c\/summary\u003e\n\u003cp\u003eGiven the voltages and currents involved, installation should be handled by a qualified, licensed electrician or solar installer familiar with your local code requirements.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003c!-- ============ DOWNLOADS ============ --\u003e\n\u003csection class=\"esk-downloads\"\u003e\n\u003ch3\u003eDocuments \u0026amp; Downloads\u003c\/h3\u003e\n\u003cdiv class=\"esk-dl-block\"\u003e\n\u003cp class=\"esk-dl-group-title\"\u003eBattery — EG4 280Ah All-Weather\u003c\/p\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4-14.3kWh-PowerPro-WallMount-AW-Spec-Sheet.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Spec Sheet \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4-14.3kWh-PowerPro-WallMount-AW-Manual.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e User Manual \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4%C2%AE-14.3kWh-WallMount-AW-Quick-Start-Guide.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Quick Start Guide \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4-LL-WallMount-280Ah-UL9540A-Test-Verification.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UL9540A Certificate \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4%C2%AE-14.3kWh-PowerPro-WallMount-UL1973-Certificate-Of-Compliance.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UL1973 Certificate \u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-dl-block\"\u003e\n\u003cp class=\"esk-dl-group-title\"\u003eInverter — EG4 12000XP V2\u003c\/p\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/02\/EG4-12000XPV2-Spec-Sheet-NEW.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Spec Sheet \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/02\/EG4-12000XPV2-Manual-NEW.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e User Manual \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2025\/02\/EG4-Wifi-Dongle-Troubleshooting-Guide.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e WiFi Configuration Guide \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2025\/02\/EG4-12000XP-UL-1741-Certificate-of-Compliance.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UL1741 Certificate \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/02\/EG4-12000XP-WallMount-Indoor-280-Indoor-Battery-ESS-UL-9540-Certificate-of-Compliance-NEW.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UL9540 Certificate \u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ FOOTER ============ --\u003e\n\u003csection class=\"esk-footer\"\u003e\n\u003cp class=\"esk-warranty\"\u003eBatteries backed by a \u003cstrong\u003e10-year manufacturer's warranty\u003c\/strong\u003e; inverters backed by a \u003cstrong\u003e5-year manufacturer's warranty\u003c\/strong\u003e — both covering defects in materials and workmanship.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"EG4","offers":[{"title":"Default Title","offer_id":41321402040375,"sku":"K0766","price":8685.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/209.webp?v=1782062336"},{"product_id":"eg4-6-000w-120vac-240vac-off-grid-hybrid-solar-inverter","title":"EG4 6,000W 120VAC\/240VAC Off-Grid Hybrid Solar Inverter","description":"\u003cdiv style=\"text-align: start;\" class=\"esk-pd esk-pd-b eg46000xp-pd\"\u003e\n\u003csection class=\"esk-hero\"\u003e\n\u003cp class=\"esk-eyebrow\"\u003e48V Hybrid Inverter · Transformer-Free · Parallels Up to 16\u003c\/p\u003e\n\u003ch2\u003e6,000 Watts of Off-Grid Power in a Lighter, Transformer-Free Design\u003c\/h2\u003e\n\u003cp class=\"esk-lead\"\u003eThe EG4 6000XP converts stored DC power from a 48V lithium battery bank into full-strength 120\/240V split-phase household electricity, backed by up to 8,000W of dual-MPPT solar input. Its transformer-free architecture trims weight and standby losses compared to traditional inverter designs, while a sub-15ms transfer time keeps backup power switching close to seamless.\u003c\/p\u003e\n\u003cdiv aria-hidden=\"true\" class=\"esk-divider\"\u003e\u003csvg preserveaspectratio=\"none\" viewbox=\"0 0 600 20\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" d=\"M0,10 Q25,-4 50,10 T100,10 T150,10 T200,10 T250,10 T300,10 T350,10 T400,10 T450,10 T500,10 T550,10 T600,10\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"esk-stats\"\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e6,000W\u003c\/span\u003e\u003cspan class=\"label\"\u003eContinuous Output\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e12,000W\u003c\/span\u003e\u003cspan class=\"label\"\u003eSurge (3.5 sec)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e120\/240V\u003c\/span\u003e\u003cspan class=\"label\"\u003eSplit-Phase\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e\u0026lt;15ms\u003c\/span\u003e\u003cspan class=\"label\"\u003eTransfer Time\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"esk-features\"\u003e\n\u003cp\u003e\u003cimg style=\"float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/6000xp-intro-scaled-1-2048x820.webp?v=1784137181\" alt=\"Modern home with rooftop solar panels and an electric vehicle, powered by the EG4 6000XP off-grid hybrid solar inverter\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg style=\"float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/6000xp-Features-scaled-2-2048x820.webp?v=1784137205\" alt=\"Lakeside cabin at sunset running on the EG4 6000XP hybrid inverter, highlighting its LED display and smart energy management\"\u003e\u003c\/p\u003e\n\u003ch3\u003eWhat Makes the 6000XP Different\u003c\/h3\u003e\n\u003cdiv class=\"esk-feature-grid\"\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" fill=\"currentColor\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M13 2 4 14h6l-1 8 9-12h-6l1-8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003e6kW Continuous, 12kW Surge\u003c\/h4\u003e\n\u003cp\u003eRated for 6,000W of continuous output with up to 12,000W of surge headroom (3.5 sec) to start motors and pumps without tripping.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003crect rx=\"2\" height=\"18\" width=\"16\" y=\"3\" x=\"4\"\u003e\u003c\/rect\u003e\u003cpath d=\"M9 8h6M9 12h6M9 16h3\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eTransformer-Free Design\u003c\/h4\u003e\n\u003cp\u003eA lighter, more efficient architecture than traditional transformer-based inverters, with less standby power lost as heat.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003ccircle r=\"4.2\" cy=\"12\" cx=\"12\"\u003e\u003c\/circle\u003e\u003cpath d=\"M12 3v2M12 19v2M4.2 12H2.2M21.8 12h-2M5.6 5.6l1.4 1.4M17 17l1.4 1.4M18.4 5.6 17 7M7 17l-1.4 1.4\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eDual MPPT, 8kW Solar Input\u003c\/h4\u003e\n\u003cp\u003eTwo independent MPPT trackers pull up to 8,000W combined, adjusting continuously as sunlight shifts through the day.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M13 2 3 14h6l-1 8L18 10h-6l1-8z\"\u003e\u003c\/path\u003e\u003cpath stroke-dasharray=\"1 3\" d=\"M21 3v5h-5\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eSub-15ms UPS Transfer\u003c\/h4\u003e\n\u003cp\u003eSwitches to battery power in under 15 milliseconds on its own, keeping sensitive electronics running through a grid drop without a hard reboot.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003crect transform=\"rotate(-18 7 12)\" rx=\"3\" height=\"6\" width=\"9\" y=\"9\" x=\"2.5\"\u003e\u003c\/rect\u003e\u003crect transform=\"rotate(-18 17 12)\" rx=\"3\" height=\"6\" width=\"9\" y=\"9\" x=\"12.5\"\u003e\u003c\/rect\u003e\u003c\/svg\u003e\n\u003ch4\u003eParallels Up to 16 Units\u003c\/h4\u003e\n\u003cp\u003eScales far beyond a single-home setup — stack units together for larger properties or commercial-scale off-grid installations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 2 4 5v6c0 5 3.4 8.4 8 9.9 4.6-1.5 8-4.9 8-9.9V5l-8-3Z\"\u003e\u003c\/path\u003e\u003cpath d=\"M8.5 12.3 10.8 14.6 15.5 9.9\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eBuilt-In Breakers \u0026amp; Protection\u003c\/h4\u003e\n\u003cp\u003eIntegrated circuit breakers simplify installation and add a layer of protection against faults right out of the box.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" class=\"esk-accent-2\"\u003e\u003ccircle r=\"2.5\" cy=\"12\" cx=\"6\"\u003e\u003c\/circle\u003e\u003ccircle r=\"2.5\" cy=\"12\" cx=\"18\"\u003e\u003c\/circle\u003e\u003cpath stroke-dasharray=\"2 2\" d=\"M8.5 12h7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eRemote Monitoring\u003c\/h4\u003e\n\u003cp\u003eTrack production, consumption, and battery status remotely, with support for load control, AC coupling, and peak shaving.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M9 2v4M15 2v4M7 8h10v4a5 5 0 0 1-10 0V8Z\"\u003e\u003c\/path\u003e\u003cpath d=\"M12 17v4\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eBroad Battery Compatibility\u003c\/h4\u003e\n\u003cp\u003eClosed-loop communication with the full BigBattery and EG4 battery lineups, without being locked to a single battery model.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cdiv aria-hidden=\"true\" style=\"background: var(--ink-2); color: var(--accent); opacity: 0.7;\" class=\"esk-divider\"\u003e\u003csvg preserveaspectratio=\"none\" viewbox=\"0 0 600 20\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" d=\"M0,10 Q25,-4 50,10 T100,10 T150,10 T200,10 T250,10 T300,10 T350,10 T400,10 T450,10 T500,10 T550,10 T600,10\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003csection class=\"esk-narrative\"\u003e\n\u003ch3\u003eBuilt to Scale Past a Single Home\u003c\/h3\u003e\n\u003cp\u003eThe \"6000\" in its name is the continuous output rating; the \"8kPV\" is what the solar side can handle — up to 8,000W across two independent MPPT trackers, tuned separately as clouds and sun angle change through the day. A transformer-free design keeps the unit lighter than older inverter architectures and cuts down on the standby losses that come from an always-on transformer core.\u003c\/p\u003e\n\u003cp\u003eWhere it really separates from a typical single-home inverter is scale: up to 16 units can run in parallel, which puts genuinely large installations — bigger homes, workshops, small commercial sites — within reach of the same platform, without switching to a different product line. Built-in breakers, remote monitoring, and a sub-15ms transfer to battery power round out a unit that's meant to be installed once and left alone.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection class=\"esk-specs\"\u003e\n\u003ch3\u003eFull Specifications\u003c\/h3\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eOutput\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power\u003c\/td\u003e\n\u003ctd\u003e6,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge capacity\u003c\/td\u003e\n\u003ctd\u003e12,000W (3.5s) \/ 11,000W (5s)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput voltage\u003c\/td\u003e\n\u003ctd\u003e120\/240 Vac split-phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency\u003c\/td\u003e\n\u003ctd\u003e50\/60 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous output current\u003c\/td\u003e\n\u003ctd\u003e25A @ 240V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower factor\u003c\/td\u003e\n\u003ctd\u003e0.99 (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal harmonic distortion\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitching time\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;15ms single \/ \u0026lt;30ms parallel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eSolar Input\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT channels\u003c\/td\u003e\n\u003ctd\u003e2 (1 input each)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax PV array power\u003c\/td\u003e\n\u003ctd\u003e8,000W (4,000W\/MPPT)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax input current\u003c\/td\u003e\n\u003ctd\u003e17A \/ 17A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax short circuit current\u003c\/td\u003e\n\u003ctd\u003e25A \/ 25A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC input voltage range\u003c\/td\u003e\n\u003ctd\u003e100–480 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT voltage range\u003c\/td\u003e\n\u003ctd\u003e120–385 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT efficiency\u003c\/td\u003e\n\u003ctd\u003e99%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eBattery \u0026amp; Charging\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal battery voltage\u003c\/td\u003e\n\u003ctd\u003e48 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery voltage range\u003c\/td\u003e\n\u003ctd\u003e46.4–60 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge current\u003c\/td\u003e\n\u003ctd\u003e125 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax discharge current\u003c\/td\u003e\n\u003ctd\u003e140 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC cut-off voltage\u003c\/td\u003e\n\u003ctd\u003e59 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eAC Input\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC voltage\u003c\/td\u003e\n\u003ctd\u003e120\/240 Vac\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous AC current\u003c\/td\u003e\n\u003ctd\u003e37.5A @ 240V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC input power\u003c\/td\u003e\n\u003ctd\u003e9,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC bypass\u003c\/td\u003e\n\u003ctd\u003e50 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003ePhysical \u0026amp; Environmental\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (D×W×H)\u003c\/td\u003e\n\u003ctd\u003e5.25 × 18 × 25.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e52.9 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP20 (indoor only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e32–113°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise level\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;58 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAltitude\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;6,561 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eConnectivity \u0026amp; Warranty\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax parallel connections\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication\u003c\/td\u003e\n\u003ctd\u003eRemote monitoring, app-based\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand \/ model\u003c\/td\u003e\n\u003ctd\u003eEG4 6000XP (8kPV)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 12.5px; color: var(--muted) !important; margin-top: 18px !important;\"\u003eCertification: UL1741.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003csection class=\"esk-compat\"\u003e\n\u003ch3\u003eBattery Compatibility\u003c\/h3\u003e\n\u003cp\u003eBuilt around 48V lithium battery banks (46.4–60Vdc), with closed-loop communication across the full BigBattery and EG4 battery lineups rather than a single approved model. Commonly paired batteries include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBigBattery NEXUS\u003c\/li\u003e\n\u003cli\u003eBigBattery ETHOS\u003c\/li\u003e\n\u003cli\u003eBigBattery HUSKY2 INV\u003c\/li\u003e\n\u003cli\u003eEG4 280Ah All-Weather \/ Indoor\u003c\/li\u003e\n\u003cli\u003eEG4 314Ah All-Weather \/ Indoor\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003csection class=\"esk-faq\"\u003e\n\u003cp\u003e\u003cimg style=\"float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/EG4-Inverter-Certification-scaled-4-2048x820.webp?v=1784137145\" alt=\"EG4 6000XP UL1741 Certificate of Compliance with Intertek ETL certification marks\"\u003e\u003c\/p\u003e\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat do \"6000XP\" and \"8kPV\" refer to?\u003c\/summary\u003e\n\u003cp\u003e\"6000\" is the continuous AC output rating in watts (6,000W). \"8kPV\" refers to the maximum solar array input the inverter can handle — up to 8,000W across its two MPPT trackers. The two numbers describe different sides of the same unit: what it outputs versus what it can accept from panels.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill the 6000XP run my entire house?\u003c\/summary\u003e\n\u003cp\u003eIt depends on your total connected load. At 6,000W continuous (12,000W surge) it covers most efficient homes and cabins comfortably, but a full load calculation is worth doing before sizing your system — especially with well pumps, electric heat, or several large appliances running together.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat batteries does it work with?\u003c\/summary\u003e\n\u003cp\u003eAny 48V lithium battery bank in the BigBattery or EG4 lineup works via closed-loop communication, including NEXUS, ETHOS, HUSKY2 INV, and EG4's 280Ah and 314Ah packs.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan it be installed outdoors?\u003c\/summary\u003e\n\u003cp\u003eNo — it's rated IP20, meaning indoor or fully enclosed installation only, such as a garage, utility room, or dedicated power shed.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow many units can I run together?\u003c\/summary\u003e\n\u003cp\u003eUp to 16 units can be paralleled on this platform, which is enough headroom to scale from a single home up to larger or commercial-style off-grid installations without changing product lines.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need a licensed electrician to install it?\u003c\/summary\u003e\n\u003cp\u003eGiven the voltages and currents involved, installation should be handled by a qualified, licensed electrician or solar installer familiar with your local code requirements.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003csection class=\"esk-downloads\"\u003e\n\u003ch3\u003eDocuments \u0026amp; Downloads\u003c\/h3\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/06\/EG4-6000XP-Inverter-Spec-Sheet.pdf\" class=\"esk-download\" target=\"_blank\"\u003e Spec Sheet \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/06\/EG4-6000XP-Manual.pdf\" class=\"esk-download\" target=\"_blank\"\u003e User Manual \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/06\/EG4%C2%AE-6000XP-Monitoring-System-Working-Modes.pdf\" class=\"esk-download\" target=\"_blank\"\u003e Monitoring System Guide \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/06\/4G-Monitoring-Adapter-Installation-Guide.pdf\" class=\"esk-download\" target=\"_blank\"\u003e Monitoring Adapter Install Guide \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/06\/EG4-6000XP-UL1741-Certificate-of-Compliance.pdf\" class=\"esk-download\" target=\"_blank\"\u003e UL1741 Certificate \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/07\/EG4-6000XP-Warranty-Document-1.0.0.pdf\" class=\"esk-download\" target=\"_blank\"\u003e Warranty Document \u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"esk-footer\"\u003e\n\u003cp class=\"esk-warranty\"\u003eBacked by a \u003cstrong\u003e5-year manufacturer's warranty\u003c\/strong\u003e covering defects in materials and workmanship.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"EG4","offers":[{"title":"Default Title","offer_id":41322518544439,"sku":"INV026","price":1499.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/EG4-6000XP-Inverter.webp?v=1746931792"},{"product_id":"eg4-powerpro-36kw-86kwh-48v-lifepo4-off-grid-power-system","title":"EG4 PowerPro 36kW 85.8kWh 48V LiFePO₄ | Solar Power System","description":"\u003cdiv class=\"esk-pd esk-pd-b eg4pp-pd\"\u003e\n\u003c!-- ============ HERO ============ --\u003e\n\u003csection class=\"esk-hero\"\u003e\n\u003cp class=\"esk-eyebrow\"\u003e48V Off-Grid ESS · 3× Inverter \/ 6× Battery · 3-Phase\u003c\/p\u003e\n\u003ch2\u003e85.8kWh of Off-Grid Power, Built as a Complete 3-Phase System\u003c\/h2\u003e\n\u003cp class=\"esk-lead\"\u003eThis configuration pairs three EG4 12000XP V2 hybrid inverters with six EG4 280Ah All-Weather batteries into one pre-matched, closed-loop off-grid system — 85.8kWh of storage and up to 36kW of combined continuous output across a genuine 3-phase connection. Built for large homes, workshops, and off-grid properties that need serious capacity and multi-day autonomy, not just backup power.\u003c\/p\u003e\n\u003cdiv class=\"esk-divider\" aria-hidden=\"true\"\u003e\u003csvg viewbox=\"0 0 600 20\" preserveaspectratio=\"none\"\u003e\u003cpath d=\"M0,10 Q25,-4 50,10 T100,10 T150,10 T200,10 T250,10 T300,10 T350,10 T400,10 T450,10 T500,10 T550,10 T600,10\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ STATS ============ --\u003e\n\u003csection class=\"esk-stats\"\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e85.8kWh\u003c\/span\u003e\u003cspan class=\"label\"\u003eTotal Capacity\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e36kW\u003c\/span\u003e\u003cspan class=\"label\"\u003eContinuous Output\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e72kW\u003c\/span\u003e\u003cspan class=\"label\"\u003eMax PV Input\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e3-Phase\u003c\/span\u003e\u003cspan class=\"label\"\u003eOutput Config\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ CONFIGURATION ============ --\u003e\n\u003csection class=\"esk-config\"\u003e\n\u003ch3\u003eWhat's In This Configuration\u003c\/h3\u003e\n\u003cp class=\"esk-config-sub\"\u003eTwo components, pre-matched and sold as one system.\u003c\/p\u003e\n\u003cdiv class=\"esk-config-grid\"\u003e\n\u003cdiv class=\"esk-config-card\"\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"currentColor\" aria-hidden=\"true\"\u003e\u003cpath d=\"M13 2 4 14h6l-1 8 9-12h-6l1-8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cp class=\"qty\"\u003eQty 3\u003c\/p\u003e\n\u003ch4\u003eEG4 12000XP V2 Hybrid Inverter\u003c\/h4\u003e\n\u003cp\u003e12,000W continuous output and 24,000W max PV input per unit, with dual MPPT solar tracking on each inverter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-config-card\"\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003crect x=\"2\" y=\"8\" width=\"17\" height=\"9\" rx=\"2\"\u003e\u003c\/rect\u003e\u003crect x=\"19\" y=\"11\" width=\"2.5\" height=\"3\" rx=\"1\" fill=\"currentColor\" stroke=\"none\"\u003e\u003c\/rect\u003e\u003crect x=\"5\" y=\"10.3\" width=\"4\" height=\"4.4\" rx=\"0.6\" fill=\"currentColor\" stroke=\"none\"\u003e\u003c\/rect\u003e\u003c\/svg\u003e\n\u003cp class=\"qty\"\u003eQty 6\u003c\/p\u003e\n\u003ch4\u003eEG4 280Ah All-Weather Battery\u003c\/h4\u003e\n\u003cp\u003e14.3kWh of LiFePO₄ storage per module, IP65-rated with integrated self-heating and internal fire suppression.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ FEATURES ============ --\u003e\n\u003csection class=\"esk-features\"\u003e\n\u003ch3\u003eWhat Makes This Configuration Different\u003c\/h3\u003e\n\u003cdiv class=\"esk-feature-grid\"\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003crect x=\"2\" y=\"8\" width=\"17\" height=\"9\" rx=\"2\"\u003e\u003c\/rect\u003e\u003crect x=\"19\" y=\"11\" width=\"2.5\" height=\"3\" rx=\"1\" fill=\"currentColor\" stroke=\"none\"\u003e\u003c\/rect\u003e\u003crect x=\"5\" y=\"10.3\" width=\"4\" height=\"4.4\" rx=\"0.6\" fill=\"currentColor\" stroke=\"none\"\u003e\u003c\/rect\u003e\u003c\/svg\u003e\n\u003ch4\u003e85.8kWh Total Capacity\u003c\/h4\u003e\n\u003cp\u003eSix 14.3kWh LiFePO₄ modules combine into a single closed-loop bank with a full day-plus of stored energy for most homes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M4 4 12 13M12 2V13M20 4 12 13M12 13V21\"\u003e\u003c\/path\u003e\u003ccircle cx=\"12\" cy=\"13\" r=\"2\" fill=\"currentColor\" stroke=\"none\"\u003e\u003c\/circle\u003e\u003c\/svg\u003e\n\u003ch4\u003eTrue 3-Phase Output\u003c\/h4\u003e\n\u003cp\u003eThree inverters working together deliver up to 36kW combined across a genuine 3-phase connection, not three single-phase units side by side.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 2 4 5v6c0 5 3.4 8.4 8 9.9 4.6-1.5 8-4.9 8-9.9V5l-8-3Z\"\u003e\u003c\/path\u003e\u003cpath d=\"M12 8c-1.5 2-2.5 3.3-2.5 4.5a2.5 2.5 0 0 0 5 0C14.5 11.3 13.5 10 12 8Z\" fill=\"currentColor\" stroke=\"none\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eAll-Weather, IP65 Batteries\u003c\/h4\u003e\n\u003cp\u003eRated for direct outdoor installation, with a sealed enclosure built to handle rain, dust, and temperature swings without a dedicated equipment room.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3a2 2 0 0 0-2 2v9.1a4 4 0 1 0 4 0V5a2 2 0 0 0-2-2Z\"\u003e\u003c\/path\u003e\u003cline x1=\"12\" y1=\"7\" x2=\"12\" y2=\"14\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\n\u003ch4\u003eIntegrated Self-Heating\u003c\/h4\u003e\n\u003cp\u003eInternal heating elements keep the batteries within operating range through cold snaps, so performance doesn't fall off in winter.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" aria-hidden=\"true\"\u003e\u003ccircle cx=\"12\" cy=\"12\" r=\"4.2\"\u003e\u003c\/circle\u003e\u003cpath d=\"M12 3v2M12 19v2M4.2 12H2.2M21.8 12h-2M5.6 5.6l1.4 1.4M17 17l1.4 1.4M18.4 5.6 17 7M7 17l-1.4 1.4\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eDual MPPT Per Inverter\u003c\/h4\u003e\n\u003cp\u003eSix independent MPPT channels across the system track solar production in real time for up to 72kW of combined PV input.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" aria-hidden=\"true\"\u003e\u003ccircle cx=\"6\" cy=\"12\" r=\"2.5\"\u003e\u003c\/circle\u003e\u003ccircle cx=\"18\" cy=\"12\" r=\"2.5\"\u003e\u003c\/circle\u003e\u003cpath d=\"M8.5 12h7\" stroke-dasharray=\"2 2\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eClosed-Loop Communication\u003c\/h4\u003e\n\u003cp\u003eBatteries and inverters share live data over RS485\/CANBus, coordinating charge and discharge automatically instead of running on fixed assumptions.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg class=\"esk-accent-2\" viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 2 4 5v6c0 5 3.4 8.4 8 9.9 4.6-1.5 8-4.9 8-9.9V5l-8-3Z\"\u003e\u003c\/path\u003e\u003cpath d=\"M8.5 12.3 10.8 14.6 15.5 9.9\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eInternal Fire Suppression\u003c\/h4\u003e\n\u003cp\u003eEach battery module includes built-in fire suppression on top of active cell balancing and standard BMS protections.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" aria-hidden=\"true\"\u003e\u003crect x=\"2.5\" y=\"9\" width=\"9\" height=\"6\" rx=\"3\" transform=\"rotate(-18 7 12)\"\u003e\u003c\/rect\u003e\u003crect x=\"12.5\" y=\"9\" width=\"9\" height=\"6\" rx=\"3\" transform=\"rotate(-18 17 12)\"\u003e\u003c\/rect\u003e\u003c\/svg\u003e\n\u003ch4\u003eScalable Platform\u003c\/h4\u003e\n\u003cp\u003eThe same system configures from a single inverter and battery up to this full 3-phase, 6-battery build, matching capacity to the property.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cdiv class=\"esk-divider\" style=\"background: var(--ink-2); color: var(--accent); opacity: 0.7;\" aria-hidden=\"true\"\u003e\u003csvg viewbox=\"0 0 600 20\" preserveaspectratio=\"none\"\u003e\u003cpath d=\"M0,10 Q25,-4 50,10 T100,10 T150,10 T200,10 T250,10 T300,10 T350,10 T400,10 T450,10 T500,10 T550,10 T600,10\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003c!-- ============ NARRATIVE ============ --\u003e\n\u003csection class=\"esk-narrative\"\u003e\n\u003ch3\u003eSized for Properties, Not Just Backup\u003c\/h3\u003e\n\u003cp\u003eA single inverter and battery pair covers a cabin or small home; this configuration is built for something bigger. Three EG4 12000XP V2 inverters combine into a 3-phase system capable of 36kW continuous output, while six 280Ah All-Weather battery modules bank 85.8kWh of usable storage — enough to carry a large home, workshop, or off-grid estate through extended cloudy stretches without rationing power.\u003c\/p\u003e\n\u003cp\u003eThe All-Weather battery line is IP65-rated with integrated self-heating and internal fire suppression, so it doesn't need a climate-controlled room the way an indoor-only battery would. Closed-loop communication between every battery and inverter keeps charge and discharge coordinated automatically across the whole bank, rather than treating each unit as an independent guess. The inverters themselves remain IP20 (indoor\/enclosed installation only) — it's the battery bank that's built for the elements here, not the power electronics.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- ============ SPECS ============ --\u003e\n\u003csection class=\"esk-specs\"\u003e\n\u003ch3\u003eFull Specifications\u003c\/h3\u003e\n\u003cp class=\"esk-specs-unit\"\u003ePer-unit values below; this configuration uses 3 inverters and 6 batteries.\u003c\/p\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003eInverter — EG4 12000XP V2 (×3)\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eOutput\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal output power\u003c\/td\u003e\n\u003ctd\u003e12,000 W @ 240V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge capacity\u003c\/td\u003e\n\u003ctd\u003e18,000 W (5 sec)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC voltage\u003c\/td\u003e\n\u003ctd\u003e120\/240V, 120\/208V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous output current\u003c\/td\u003e\n\u003ctd\u003e50A @ 240V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower factor\u003c\/td\u003e\n\u003ctd\u003e0.99\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitching time\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;10 ms (single)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eSolar \u0026amp; Charging\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT channels\u003c\/td\u003e\n\u003ctd\u003e2 per unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax PV input\u003c\/td\u003e\n\u003ctd\u003e24,000 W (12,000W\/MPPT)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT voltage range\u003c\/td\u003e\n\u003ctd\u003e120–385 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge\/discharge current\u003c\/td\u003e\n\u003ctd\u003e250 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery voltage range\u003c\/td\u003e\n\u003ctd\u003e46.4–60 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficiency (PV to loads)\u003c\/td\u003e\n\u003ctd\u003e93.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eAC Input\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC input power\u003c\/td\u003e\n\u003ctd\u003e24,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC bypass (grid \/ gen)\u003c\/td\u003e\n\u003ctd\u003e100A \/ 90A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRec. generator size\u003c\/td\u003e\n\u003ctd\u003e6,000–15,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency\u003c\/td\u003e\n\u003ctd\u003e60 Hz (50 Hz configurable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003ePhysical \u0026amp; Other\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (each)\u003c\/td\u003e\n\u003ctd\u003e104.7 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e34.25 × 20.9 × 5.9 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP20 (indoor only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temp (full load)\u003c\/td\u003e\n\u003ctd\u003e32–113°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax parallel units\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e5 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003e\u003ca href=\"\/products\/eg4-powerpro-48v-14-3kwh-280ah-lifepo4-battery\"\u003eBattery — EG4 280Ah All-Weather (×6)\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eCapacity\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal voltage\u003c\/td\u003e\n\u003ctd\u003e51.2 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry\u003c\/td\u003e\n\u003ctd\u003eLiFePO₄\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ekWh capacity (each)\u003c\/td\u003e\n\u003ctd\u003e14.3 kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAh capacity (each)\u003c\/td\u003e\n\u003ctd\u003e280 Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous discharge rate\u003c\/td\u003e\n\u003ctd\u003e10,240 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eCharging\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous charge current\u003c\/td\u003e\n\u003ctd\u003e140 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous discharge current\u003c\/td\u003e\n\u003ctd\u003e140A (200A \/ 30 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRec. charge\/discharge current\u003c\/td\u003e\n\u003ctd\u003e60–140 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRec. SoC cutoff\u003c\/td\u003e\n\u003ctd\u003e20%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eEnvironmental\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 (all-weather)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging temp range\u003c\/td\u003e\n\u003ctd\u003e32–122°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarging temp range\u003c\/td\u003e\n\u003ctd\u003e-4–131°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage temp range\u003c\/td\u003e\n\u003ctd\u003e32–113°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003ePhysical \u0026amp; Other\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight (each)\u003c\/td\u003e\n\u003ctd\u003e308.6 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e36.1 × 22.3 × 9.1 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eRS485, CANBus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ SCALABILITY ============ --\u003e\n\u003csection class=\"esk-scale\"\u003e\n\u003ch3\u003eOther Configurations Available\u003c\/h3\u003e\n\u003cp\u003eThis same battery and inverter platform is sold in several sizes. The row below highlighted in your brand color is the configuration this page describes — everything else is shown for reference if a customer needs a different scale.\u003c\/p\u003e\n\u003ctable class=\"esk-scale-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eTier\u003c\/th\u003e\n\u003cth\u003eInverters\u003c\/th\u003e\n\u003cth\u003eBatteries\u003c\/th\u003e\n\u003cth\u003eCapacity\u003c\/th\u003e\n\u003cth\u003eMax Output\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tier\"\u003eStandard\u003c\/td\u003e\n\u003ctd\u003e1×\u003c\/td\u003e\n\u003ctd\u003e1–3×\u003c\/td\u003e\n\u003ctd\u003e14.3–42.9 kWh\u003c\/td\u003e\n\u003ctd\u003e12 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tier\"\u003eLarge\u003c\/td\u003e\n\u003ctd\u003e2×\u003c\/td\u003e\n\u003ctd\u003e2, 4, or 6×\u003c\/td\u003e\n\u003ctd\u003e28.6–85.8 kWh\u003c\/td\u003e\n\u003ctd\u003e24 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"current\"\u003e\n\u003ctd class=\"tier\"\u003e3-Phase\u003c\/td\u003e\n\u003ctd\u003e3×\u003c\/td\u003e\n\u003ctd\u003e6×\u003c\/td\u003e\n\u003ctd\u003e85.8 kWh\u003c\/td\u003e\n\u003ctd\u003e36 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/section\u003e\n\u003c!-- ============ FAQ ============ --\u003e\n\u003csection class=\"esk-faq\"\u003e\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat exactly is included in this configuration?\u003c\/summary\u003e\n\u003cp\u003eThree EG4 12000XP V2 hybrid inverters and six EG4 280Ah All-Weather battery modules, pre-matched to run as a single closed-loop system — 85.8kWh of storage and up to 36kW of combined 3-phase output.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat does \"3-phase\" mean, and do I need it?\u003c\/summary\u003e\n\u003cp\u003eThree-phase power is what most commercial buildings, larger workshops, and some well pumps or HVAC equipment require to run efficiently. If a property or its equipment is wired for single-phase 120\/240V only, a smaller 1× or 2× inverter configuration is usually a better and less expensive fit.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan the batteries really be installed outdoors?\u003c\/summary\u003e\n\u003cp\u003eYes — the EG4 All-Weather battery is IP65-rated with integrated self-heating, built specifically for direct outdoor or unconditioned-space installation. The inverters are IP20 and still need a covered, indoor-equivalent location such as a garage, utility room, or power shed.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs this system expandable later?\u003c\/summary\u003e\n\u003cp\u003eThe platform scales from a single inverter and battery up to this 3-phase, 6-battery build, so it's possible to start smaller and add units later — though matching an existing installation's firmware and configuration is worth confirming before ordering additional hardware.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat's the warranty on this system?\u003c\/summary\u003e\n\u003cp\u003eThe batteries carry a 10-year manufacturer's warranty and the inverters carry a 5-year manufacturer's warranty — two separate coverage periods for the two components.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan it run on solar, grid, and a generator?\u003c\/summary\u003e\n\u003cp\u003eYes. Each inverter accepts grid and generator input in addition to solar, with a recommended generator size of 6,000–15,000W per inverter on this platform.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need a licensed electrician to install it?\u003c\/summary\u003e\n\u003cp\u003eGiven the voltages, currents, and 3-phase wiring involved, installation should be handled by a qualified, licensed electrician or solar installer familiar with your local code requirements.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003c!-- ============ DOWNLOADS ============ --\u003e\n\u003csection class=\"esk-downloads\"\u003e\n\u003ch3\u003eDocuments \u0026amp; Downloads\u003c\/h3\u003e\n\u003cdiv class=\"esk-dl-block\"\u003e\n\u003cp class=\"esk-dl-group-title\"\u003eBattery — EG4 280Ah All-Weather\u003c\/p\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4-14.3kWh-PowerPro-WallMount-AW-Spec-Sheet.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Spec Sheet \u003c\/a\u003e \u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4-14.3kWh-PowerPro-WallMount-AW-Manual.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e User Manual \u003c\/a\u003e \u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4%C2%AE-14.3kWh-WallMount-AW-Quick-Start-Guide.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Quick Start Guide \u003c\/a\u003e \u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4-LL-WallMount-280Ah-UL9540A-Test-Verification.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UL9540A Certificate \u003c\/a\u003e \u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/08\/EG4%C2%AE-14.3kWh-PowerPro-WallMount-UL1973-Certificate-Of-Compliance.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UL1973 Certificate \u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-dl-block\"\u003e\n\u003cp class=\"esk-dl-group-title\"\u003eInverter — EG4 12000XP V2\u003c\/p\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/02\/EG4-12000XPV2-Spec-Sheet-NEW.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Spec Sheet \u003c\/a\u003e \u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/02\/EG4-12000XPV2-Manual-NEW.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e User Manual \u003c\/a\u003e \u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2025\/02\/EG4-Wifi-Dongle-Troubleshooting-Guide.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e WiFi Configuration Guide \u003c\/a\u003e \u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2025\/02\/EG4-12000XP-UL-1741-Certificate-of-Compliance.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UL1741 Certificate \u003c\/a\u003e \u003ca class=\"esk-download\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/02\/EG4-12000XP-WallMount-Indoor-280-Indoor-Battery-ESS-UL-9540-Certificate-of-Compliance-NEW.pdf\" rel=\"noopener\" target=\"_blank\"\u003e \u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"1.7\" stroke-linecap=\"round\" stroke-linejoin=\"round\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UL9540 Certificate \u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ FOOTER ============ --\u003e\n\u003csection class=\"esk-footer\"\u003e\n\u003cp class=\"esk-warranty\"\u003eBatteries backed by a \u003cstrong\u003e10-year manufacturer's warranty\u003c\/strong\u003e; inverters backed by a \u003cstrong\u003e5-year manufacturer's warranty\u003c\/strong\u003e — both covering defects in materials and workmanship.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"EG4","offers":[{"title":"Default Title","offer_id":41394427822135,"sku":"K0168","price":26414.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/214-1-1300x813.webp?v=1784135624"},{"product_id":"eg4-12kpv-8-000w-48v-hybrid-inverter-all-weather","title":"EG4 12kPV | 8,000W 48V Hybrid Inverter, All-Weather","description":"\u003cdiv class=\"esk-pd esk-pd-b eg412kpv-pd\"\u003e\n\u003c!-- ============ HERO ============ --\u003e\n\u003csection class=\"esk-hero\"\u003e\n\u003cp class=\"esk-eyebrow\"\u003e48V Hybrid Inverter · NEMA 4X All-Weather · Grid-Tied + Off-Grid\u003c\/p\u003e\n\u003ch2\u003e8,000 Watts of All-Weather Power, Built for Grid-Tied and Off-Grid Alike\u003c\/h2\u003e\n\u003cp class=\"esk-lead\"\u003eThe EG4 12kPV is a hybrid inverter — it works tied to the utility grid, fully off-grid, or anywhere in between, converting DC solar and battery power into 120\/240V split-phase household electricity. A NEMA 4X enclosure rates it for direct outdoor installation, and it's backed by a 10-year manufacturer's warranty, well beyond what most inverters in this class offer.\u003c\/p\u003e\n\u003cdiv aria-hidden=\"true\" class=\"esk-divider\"\u003e\u003csvg preserveaspectratio=\"none\" viewbox=\"0 0 600 20\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" d=\"M0,10 Q25,-4 50,10 T100,10 T150,10 T200,10 T250,10 T300,10 T350,10 T400,10 T450,10 T500,10 T550,10 T600,10\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ STATS ============ --\u003e\n\u003csection class=\"esk-stats\"\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e8,000W\u003c\/span\u003e\u003cspan class=\"label\"\u003eContinuous Output\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e12,000W\u003c\/span\u003e\u003cspan class=\"label\"\u003eMax Solar Input\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003eNEMA 4X\u003c\/span\u003e\u003cspan class=\"label\"\u003eAll-Weather Rated\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e10-Year\u003c\/span\u003e\u003cspan class=\"label\"\u003eWarranty\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ FEATURES ============ --\u003e\n\u003csection class=\"esk-features\"\u003e\n\u003ch3\u003eWhat Makes the 12kPV Different\u003c\/h3\u003e\n\u003cdiv class=\"esk-feature-grid\"\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" fill=\"currentColor\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M13 2 4 14h6l-1 8 9-12h-6l1-8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003e8kW Continuous, 16kW Peak\u003c\/h4\u003e\n\u003cp\u003eRated for 8,000W continuous with up to 16,000W of peak power for half a second — enough headroom for large motor starts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 2 4 5v6c0 5 3.4 8.4 8 9.9 4.6-1.5 8-4.9 8-9.9V5l-8-3Z\"\u003e\u003c\/path\u003e\u003cpath stroke=\"none\" fill=\"currentColor\" d=\"M12 8c-1.5 2-2.5 3.3-2.5 4.5a2.5 2.5 0 0 0 5 0C14.5 11.3 13.5 10 12 8Z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eNEMA 4X All-Weather Enclosure\u003c\/h4\u003e\n\u003cp\u003eRated for direct outdoor installation and built to keep running through rain and storms, not just indoor or covered spaces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M4 7h13M13 3l4 4-4 4M20 17H7M11 21l-4-4 4-4\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eHybrid: Grid-Tied or Off-Grid\u003c\/h4\u003e\n\u003cp\u003eWorks as a grid-tied system with AC coupling for retrofits, or runs fully off-grid — the same unit covers both installation types.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003ccircle r=\"4.2\" cy=\"12\" cx=\"12\"\u003e\u003c\/circle\u003e\u003cpath d=\"M12 3v2M12 19v2M4.2 12H2.2M21.8 12h-2M5.6 5.6l1.4 1.4M17 17l1.4 1.4M18.4 5.6 17 7M7 17l-1.4 1.4\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eDual MPPT, 12kW Solar Input\u003c\/h4\u003e\n\u003cp\u003eTwo MPPT trackers with two inputs each pull up to 12,000W utilized (15,000W recommended array size) across four strings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3a2 2 0 0 0-2 2v9.1a4 4 0 1 0 4 0V5a2 2 0 0 0-2-2Z\"\u003e\u003c\/path\u003e\u003cline y2=\"14\" x2=\"12\" y1=\"7\" x1=\"12\"\u003e\u003c\/line\u003e\u003c\/svg\u003e\n\u003ch4\u003e-13°F to 140°F Range\u003c\/h4\u003e\n\u003cp\u003eA wide operating window built for the same all-weather installation locations the NEMA 4X enclosure is rated for.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M9 2v4M15 2v4M7 8h10v4a5 5 0 0 1-10 0V8Z\"\u003e\u003c\/path\u003e\u003cpath d=\"M12 17v4\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eLead-Acid or Lithium\u003c\/h4\u003e\n\u003cp\u003eCompatible with both battery chemistries, rather than being locked to lithium-only battery banks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" class=\"esk-accent-2\"\u003e\u003cpath d=\"M12 2 4 5v6c0 5 3.4 8.4 8 9.9 4.6-1.5 8-4.9 8-9.9V5l-8-3Z\"\u003e\u003c\/path\u003e\u003cpath d=\"M8.5 12.3 10.8 14.6 15.5 9.9\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eUL 9540 Certified Safety\u003c\/h4\u003e\n\u003cp\u003eBuilt-in PV arc fault, ground fault, reverse polarity, and surge protection, plus an integrated PV disconnect.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003crect transform=\"rotate(-18 7 12)\" rx=\"3\" height=\"6\" width=\"9\" y=\"9\" x=\"2.5\"\u003e\u003c\/rect\u003e\u003crect transform=\"rotate(-18 17 12)\" rx=\"3\" height=\"6\" width=\"9\" y=\"9\" x=\"12.5\"\u003e\u003c\/rect\u003e\u003c\/svg\u003e\n\u003ch4\u003e10-Year Warranty\u003c\/h4\u003e\n\u003cp\u003eTwice the coverage of most inverters in this class, backed directly by EG4's manufacturer warranty.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cdiv aria-hidden=\"true\" style=\"background: var(--ink-2); color: var(--accent); opacity: 0.7;\" class=\"esk-divider\"\u003e\u003csvg preserveaspectratio=\"none\" viewbox=\"0 0 600 20\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" d=\"M0,10 Q25,-4 50,10 T100,10 T150,10 T200,10 T250,10 T300,10 T350,10 T400,10 T450,10 T500,10 T550,10 T600,10\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003c!-- ============ NARRATIVE ============ --\u003e\n\u003csection class=\"esk-narrative\"\u003e\n\u003ch3\u003eOne Inverter, Grid-Tied or Not\u003c\/h3\u003e\n\u003cp\u003eMost inverters are built for one installation type — grid-tied or off-grid — and locked into it. The 12kPV is a genuine hybrid: it can run as a grid-interactive system with AC coupling for adding solar to an existing home, or operate fully independent of the grid, drawing from a 48V battery bank rated for up to 167A of charge or discharge current. Either way, the same dual-MPPT solar input, transformerless design, and UL 9540-certified protections carry over.\u003c\/p\u003e\n\u003cp\u003eThe NEMA 4X enclosure and -13°F to 140°F operating range mean it doesn't need a dedicated indoor equipment room the way an IP20-rated inverter does — it's built to keep running through rain and storms in whatever location makes sense for the install. For larger or more integrated setups, it's also compatible with EG4's GridBOSS energy management hub for expanded load and grid control, and up to 10 units can be paralleled for bigger systems.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- ============ SPECS ============ --\u003e\n\u003csection class=\"esk-specs\"\u003e\n\u003ch3\u003eFull Specifications\u003c\/h3\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eOutput\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal output power\u003c\/td\u003e\n\u003ctd\u003e8,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak power (0.5s \/ 1min)\u003c\/td\u003e\n\u003ctd\u003e16,000W \/ 10,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput voltage\u003c\/td\u003e\n\u003ctd\u003e120\/240V, 120\/208V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax output current\u003c\/td\u003e\n\u003ctd\u003e33.3A @ 240V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax cont. per-line wattage\u003c\/td\u003e\n\u003ctd\u003e4,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower factor\u003c\/td\u003e\n\u003ctd\u003e0.99 (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransfer time\u003c\/td\u003e\n\u003ctd\u003e20ms default \/ 10ms selectable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocked rotor amps\u003c\/td\u003e\n\u003ctd\u003e195 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eSolar Input\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT channels\u003c\/td\u003e\n\u003ctd\u003e2 (2 inputs each)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax utilized solar power\u003c\/td\u003e\n\u003ctd\u003e12,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRec. max solar input\u003c\/td\u003e\n\u003ctd\u003e15,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax usable input current\u003c\/td\u003e\n\u003ctd\u003e25A\/25A (41.6A total)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC input voltage range\u003c\/td\u003e\n\u003ctd\u003e100–600 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT voltage range\u003c\/td\u003e\n\u003ctd\u003e120–500 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEfficiency (PV to battery)\u003c\/td\u003e\n\u003ctd\u003e99.9%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eBattery \u0026amp; Grid\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible battery types\u003c\/td\u003e\n\u003ctd\u003eLead-acid, lithium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal battery voltage\u003c\/td\u003e\n\u003ctd\u003e48 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery voltage range\u003c\/td\u003e\n\u003ctd\u003e40–60 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge\/discharge current\u003c\/td\u003e\n\u003ctd\u003e167A @ 48V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax gen\/grid passthrough\u003c\/td\u003e\n\u003ctd\u003e80A \/ 80A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMin. generator size\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;5,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCEC weighted efficiency\u003c\/td\u003e\n\u003ctd\u003e96.4%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003ePhysical \u0026amp; Environmental\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (H×W×D)\u003c\/td\u003e\n\u003ctd\u003e29.5 × 20.5 × 11.2 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e110 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure rating\u003c\/td\u003e\n\u003ctd\u003eNEMA 4X (all-weather)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e-13°F to 140°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise level\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;50 dB @ 3 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesign topology\u003c\/td\u003e\n\u003ctd\u003eHigh-frequency, transformerless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdle consumption\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;55 W standby\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eConnectivity \u0026amp; Warranty\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication\u003c\/td\u003e\n\u003ctd\u003eRS485 \/ Wi-Fi \/ CAN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax parallel units\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand \/ model\u003c\/td\u003e\n\u003ctd\u003eEG4 12kPV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eBuilt-In Protections\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePV faults\u003c\/td\u003e\n\u003ctd\u003eArc + ground fault\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWiring faults\u003c\/td\u003e\n\u003ctd\u003eReverse polarity\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLeakage \u0026amp; surge\u003c\/td\u003e\n\u003ctd\u003eMonitoring + protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePV disconnect\u003c\/td\u003e\n\u003ctd\u003eIntegrated\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 12.5px; color: var(--muted) !important; margin-top: 18px !important;\"\u003eCertifications: UL 9540, UL 1741.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- ============ COMPATIBILITY ============ --\u003e\n\u003csection class=\"esk-compat\"\u003e\n\u003ch3\u003eBattery Compatibility\u003c\/h3\u003e\n\u003cp\u003eCertified for closed-loop communication with BigBattery ETHOS and the EG4 battery lineup, and compatible more broadly with 48V lead-acid or lithium battery banks (40–60Vdc, 200Ah+ recommended per inverter).\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBigBattery ETHOS\u003c\/li\u003e\n\u003cli\u003eEG4 280Ah All-Weather \/ Indoor\u003c\/li\u003e\n\u003cli\u003eEG4 314Ah All-Weather \/ Indoor\u003c\/li\u003e\n\u003cli\u003eOther 48V lead-acid or lithium banks\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- ============ FAQ ============ --\u003e\n\u003csection class=\"esk-faq\"\u003e\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat does \"hybrid\" mean for this inverter?\u003c\/summary\u003e\n\u003cp\u003eIt means the 12kPV isn't locked into one installation type. It can run grid-tied — using AC coupling to add solar and battery backup to a home already on the grid — or operate fully off-grid with no utility connection at all. Purely off-grid inverters like BigBattery's APEX line only support the second scenario.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan it really be installed outdoors?\u003c\/summary\u003e\n\u003cp\u003eYes — it carries a NEMA 4X enclosure rating, built for direct exposure to rain and outdoor conditions, unlike IP20-rated inverters that require an indoor or fully enclosed location.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat batteries does it work with?\u003c\/summary\u003e\n\u003cp\u003eIt's certified for closed-loop communication with BigBattery ETHOS and the EG4 battery lineup, and more broadly supports any 48V lead-acid or lithium battery bank with at least 200Ah of capacity per inverter.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill it run my entire house?\u003c\/summary\u003e\n\u003cp\u003eIt depends on your total connected load. At 8,000W continuous (up to 16,000W peak for half a second) it covers most homes running efficient appliances, but a full load calculation is worth doing before sizing your system, especially with large HVAC or well pump loads.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat's the GridBOSS, and do I need one?\u003c\/summary\u003e\n\u003cp\u003eThe EG4 GridBOSS is a separate energy management hub that adds expanded load and grid control for larger or more complex installations. It's an optional add-on, not a requirement — the 12kPV runs as a complete system on its own.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need a licensed electrician to install it?\u003c\/summary\u003e\n\u003cp\u003eGiven the voltages and currents involved, and the added complexity of a grid-interactive hybrid system, installation should be handled by a qualified, licensed electrician or solar installer familiar with your local code and utility interconnection requirements.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003c!-- ============ DOWNLOADS ============ --\u003e\n\u003csection class=\"esk-downloads\"\u003e\n\u003ch3\u003eDocuments \u0026amp; Downloads\u003c\/h3\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2025\/02\/EG4%C2%AE-12kPV-Spec-Sheet.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Spec Sheet \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2025\/02\/EG4%C2%AE-12kPV-Quick-Start-Guide.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e User Manual \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2025\/02\/EG4%C2%AE-12kPV-Troubleshooting-Maintenance-Guide.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Troubleshooting \u0026amp; Maintenance Guide \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2025\/02\/12kPV-COC.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UL1741 Certificate of Compliance \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2025\/10\/EG4-12kPV-IV-8000-HYB-AW-UL-3141-CRD-PCS-Verification-of-Conformity.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UL1741 PCS CRD Certificate \u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ FOOTER ============ --\u003e\n\u003csection class=\"esk-footer\"\u003e\n\u003cp class=\"esk-warranty\"\u003eBacked by a \u003cstrong\u003e10-year manufacturer's warranty\u003c\/strong\u003e covering defects in materials and workmanship.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"EG4","offers":[{"title":"Default Title","offer_id":42322547343415,"sku":"INV028","price":2999.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/EG4-8K-12KPV-Front.webp?v=1784138222"},{"product_id":"eg4-flexboss21-21kw-split-phase-hybrid-solar-inverter","title":"EG4 FlexBOSS21 21kW Split-Phase Hybrid Solar Inverter","description":"\u003cdiv class=\"esk-pd esk-pd-b flexboss21-pd\"\u003e\n\u003c!-- ============ HERO ============ --\u003e\n\u003csection class=\"esk-hero\"\u003e\n\u003cp class=\"esk-eyebrow\"\u003e48V Hybrid Inverter · 3 MPPT · GridBOSS-Ready · UL 9540\u003c\/p\u003e\n\u003ch2\u003e16,000 Watts of Hybrid Power, Built to Scale With EG4's GridBOSS\u003c\/h2\u003e\n\u003cp class=\"esk-lead\"\u003eThe EG4 FlexBOSS21 is rated for 12,000W of continuous output on its own, rising to 16,000W with solar actively assisting, backed by up to 21,000W of PV input across three MPPT trackers and five solar strings. It works grid-tied or fully off-grid, integrates directly with EG4's GridBOSS energy management hub, and carries a 10-year manufacturer's warranty inside a NEMA 4X all-weather enclosure.\u003c\/p\u003e\n\u003cdiv aria-hidden=\"true\" class=\"esk-divider\"\u003e\u003csvg preserveaspectratio=\"none\" viewbox=\"0 0 600 20\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" d=\"M0,10 Q25,-4 50,10 T100,10 T150,10 T200,10 T250,10 T300,10 T350,10 T400,10 T450,10 T500,10 T550,10 T600,10\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ STATS ============ --\u003e\n\u003csection class=\"esk-stats\"\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e16,000W\u003c\/span\u003e\u003cspan class=\"label\"\u003ePeak Output (w\/ PV)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e21,000W\u003c\/span\u003e\u003cspan class=\"label\"\u003eMax Solar Input\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e3 MPPT\u003c\/span\u003e\u003cspan class=\"label\"\u003e5 Solar Strings\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e10-Year\u003c\/span\u003e\u003cspan class=\"label\"\u003eWarranty\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ FEATURES ============ --\u003e\n\u003csection class=\"esk-features\"\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/FlexBoss21-Simple-System-Expansion-Final-scaled-1-2048x820.webp?v=1784837233\" alt=\"EG4 solar kit — product photo\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/Flexboss-All-weather-Rain.webp?v=1784837256\" alt=\"EG4 solar kit — installation diagram\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWhat Makes the FlexBOSS21 Different\u003c\/h3\u003e\n\u003cdiv class=\"esk-feature-grid\"\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" fill=\"currentColor\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M13 2 4 14h6l-1 8 9-12h-6l1-8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003e12,000W Base, 16,000W With PV\u003c\/h4\u003e\n\u003cp\u003eRated for 12,000W continuous on its own, and up to 16,000W when solar is actively contributing alongside the battery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003ccircle r=\"4.2\" cy=\"12\" cx=\"12\"\u003e\u003c\/circle\u003e\u003cpath d=\"M12 3v2M12 19v2M4.2 12H2.2M21.8 12h-2M5.6 5.6l1.4 1.4M17 17l1.4 1.4M18.4 5.6 17 7M7 17l-1.4 1.4\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003e21kW Solar, 3 MPPT \/ 5 Strings\u003c\/h4\u003e\n\u003cp\u003eThree independent MPPT trackers split across five total input strings, pulling up to 21,000W utilized from the array.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003ccircle r=\"2.5\" cy=\"12\" cx=\"6\"\u003e\u003c\/circle\u003e\u003ccircle r=\"2.5\" cy=\"12\" cx=\"18\"\u003e\u003c\/circle\u003e\u003cpath stroke-dasharray=\"2 2\" d=\"M8.5 12h7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eGridBOSS Integration\u003c\/h4\u003e\n\u003cp\u003eConnects directly to EG4's GridBOSS hub for smart load management, AC coupling, and generator support at a system level.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M9 2v4M15 2v4M7 8h10v4a5 5 0 0 1-10 0V8Z\"\u003e\u003c\/path\u003e\u003cpath d=\"M12 17v4\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003e90A Grid Feed-Through\u003c\/h4\u003e\n\u003cp\u003eHandles high-demand loads and grid integration with headroom beyond what most residential hybrid inverters offer.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M4 7h13M13 3l4 4-4 4M20 17H7M11 21l-4-4 4-4\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eHybrid: Grid-Tied or Off-Grid\u003c\/h4\u003e\n\u003cp\u003eUL 9540 certified for both grid-tied and off-grid installs with compatible batteries — the same unit covers either path.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 2 4 5v6c0 5 3.4 8.4 8 9.9 4.6-1.5 8-4.9 8-9.9V5l-8-3Z\"\u003e\u003c\/path\u003e\u003cpath stroke=\"none\" fill=\"currentColor\" d=\"M12 8c-1.5 2-2.5 3.3-2.5 4.5a2.5 2.5 0 0 0 5 0C14.5 11.3 13.5 10 12 8Z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eNEMA 4X All-Weather\u003c\/h4\u003e\n\u003cp\u003eRated for direct outdoor installation and built to keep running through rain and snow, not just covered or indoor spaces.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" class=\"esk-accent-2\"\u003e\u003cpath d=\"M12 2 4 5v6c0 5 3.4 8.4 8 9.9 4.6-1.5 8-4.9 8-9.9V5l-8-3Z\"\u003e\u003c\/path\u003e\u003cpath d=\"M8.5 12.3 10.8 14.6 15.5 9.9\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eRapid Shutdown \u0026amp; Fault Protection\u003c\/h4\u003e\n\u003cp\u003eBuilt-in rapid shutdown, ground fault, and arc fault protection for safe, code-compliant operation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003crect transform=\"rotate(-18 7 12)\" rx=\"3\" height=\"6\" width=\"9\" y=\"9\" x=\"2.5\"\u003e\u003c\/rect\u003e\u003crect transform=\"rotate(-18 17 12)\" rx=\"3\" height=\"6\" width=\"9\" y=\"9\" x=\"12.5\"\u003e\u003c\/rect\u003e\u003c\/svg\u003e\n\u003ch4\u003eParallels Up to 16 Units\u003c\/h4\u003e\n\u003cp\u003eScales from a single home installation up to large residential or commercial-style systems on the same platform.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cdiv aria-hidden=\"true\" style=\"background: var(--ink-2); color: var(--accent); opacity: 0.7;\" class=\"esk-divider\"\u003e\u003csvg preserveaspectratio=\"none\" viewbox=\"0 0 600 20\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" d=\"M0,10 Q25,-4 50,10 T100,10 T150,10 T200,10 T250,10 T300,10 T350,10 T400,10 T450,10 T500,10 T550,10 T600,10\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003c!-- ============ NARRATIVE ============ --\u003e\n\u003csection class=\"esk-narrative\"\u003e\n\u003ch3\u003eBuilt as the Center of a Larger System\u003c\/h3\u003e\n\u003cp\u003eThe FlexBOSS21 sits at the top of EG4's hybrid lineup by power: 12,000W continuous on its own, 16,000W when solar is actively feeding in alongside the battery, and up to 21,000W of usable PV input spread across three MPPT trackers and five separate strings. That's more granular solar tracking than a typical 2-MPPT hybrid inverter, which matters on larger or more complex roof layouts with panels facing different directions.\u003c\/p\u003e\n\u003cp\u003eWhere it distinguishes itself further is the GridBOSS ecosystem: paired with EG4's GridBOSS hub (sold separately), it gains smart load management, AC coupling for retrofits, and generator support at a whole-system level rather than just at the inverter. It's UL 9540 certified for both grid-tied and off-grid installs with BigBattery ETHOS or EG4 batteries, wrapped in a NEMA 4X enclosure rated for direct outdoor installation, and backed by a 10-year manufacturer's warranty.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- ============ SPECS ============ --\u003e\n\u003csection class=\"esk-specs\"\u003e\n\u003ch3\u003eFull Specifications\u003c\/h3\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eOutput\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated output (without PV)\u003c\/td\u003e\n\u003ctd\u003e12,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated output (with PV)\u003c\/td\u003e\n\u003ctd\u003e16,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput voltage\u003c\/td\u003e\n\u003ctd\u003e120\/240V, 120\/208V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax output current\u003c\/td\u003e\n\u003ctd\u003e66.7 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak power (0.5s \/ 1s)\u003c\/td\u003e\n\u003ctd\u003e24,000W \/ 18,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower factor\u003c\/td\u003e\n\u003ctd\u003e0.99 (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransfer time\u003c\/td\u003e\n\u003ctd\u003e20ms default \/ 10ms configurable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eSolar Input\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT channels\u003c\/td\u003e\n\u003ctd\u003e3 (5 strings total)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax utilized PV power\u003c\/td\u003e\n\u003ctd\u003e21,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRec. max PV input\u003c\/td\u003e\n\u003ctd\u003e25,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC input voltage range\u003c\/td\u003e\n\u003ctd\u003e100–600 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT voltage range\u003c\/td\u003e\n\u003ctd\u003e120–440 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax efficiency (PV to grid)\u003c\/td\u003e\n\u003ctd\u003e97%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eBattery \u0026amp; Grid\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal battery voltage\u003c\/td\u003e\n\u003ctd\u003e48 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery voltage range\u003c\/td\u003e\n\u003ctd\u003e40–60 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge\/discharge power\u003c\/td\u003e\n\u003ctd\u003e12,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRec. battery capacity\/inverter\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;300 Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC bypass\u003c\/td\u003e\n\u003ctd\u003e90 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdle consumption\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;65 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003ePhysical \u0026amp; Environmental\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (D×W×H)\u003c\/td\u003e\n\u003ctd\u003e11.3 × 22.3 × 30.5 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e88 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure rating\u003c\/td\u003e\n\u003ctd\u003eNEMA 4X (all-weather)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e-13°F to 140°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise level\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;50 dB @ 3 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDesign topology\u003c\/td\u003e\n\u003ctd\u003eHigh-frequency, transformerless\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eConnectivity \u0026amp; Warranty\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication\u003c\/td\u003e\n\u003ctd\u003eRS485 \/ CANBus \/ Wi-Fi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax parallel units\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand \/ model\u003c\/td\u003e\n\u003ctd\u003eEG4 FlexBOSS21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 12.5px; color: var(--muted) !important; margin-top: 18px !important;\"\u003eCertification: UL 1741, UL 9540.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- ============ COMPATIBILITY ============ --\u003e\n\u003csection class=\"esk-compat\"\u003e\n\u003ch3\u003eBattery Compatibility\u003c\/h3\u003e\n\u003cp\u003eUL 9540 certified with closed-loop communication for both grid-tied and off-grid installs, when paired with:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBigBattery ETHOS\u003c\/li\u003e\n\u003cli\u003eEG4 280Ah All-Weather \/ Indoor\u003c\/li\u003e\n\u003cli\u003eEG4 314Ah All-Weather \/ Indoor\u003c\/li\u003e\n\u003cli\u003eRecommended: \u0026gt;300Ah per inverter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003c!-- ============ FAQ ============ --\u003e\n\u003csection class=\"esk-faq\"\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/All-EG4-scaled-1-2048x820.webp?v=1784837285\" alt=\"EG4 solar kit — detail photo\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/FlexBoss21-allweather-gridboss.webp?v=1784837304\" alt=\"EG4 solar kit — lifestyle photo\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/EG4-Inverter-Certification-scaled-2-2048x820.webp?v=1784837324\" alt=\"EG4 solar kit — detail photo 5\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat's the difference between the 12kW and 16kW ratings?\u003c\/summary\u003e\n\u003cp\u003e12,000W is what the FlexBOSS21 delivers continuously on battery and grid power alone. 16,000W is the higher figure it can reach when solar is actively contributing at the same time — the same inverter, just with the sun helping out. Both numbers are accurate; they just describe different operating conditions.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat's the GridBOSS, and do I need one?\u003c\/summary\u003e\n\u003cp\u003eThe EG4 GridBOSS is a separate energy management hub (sold separately) that adds smart load management, AC coupling, and generator support at a whole-system level. It's an optional add-on — the FlexBOSS21 runs as a complete inverter on its own — but it's a natural pairing for larger or more complex installations.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan it really be installed outdoors?\u003c\/summary\u003e\n\u003cp\u003eYes — it carries a NEMA 4X enclosure rating, built for direct exposure to rain and snow, unlike IP20-rated inverters that require an indoor or fully enclosed location.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat batteries does it work with?\u003c\/summary\u003e\n\u003cp\u003eIt's UL 9540 certified for both grid-tied and off-grid installs with BigBattery ETHOS and EG4 batteries, with at least 300Ah of recommended capacity per inverter.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill it run my entire house?\u003c\/summary\u003e\n\u003cp\u003eIt depends on your total connected load. At 12,000–16,000W depending on solar contribution, it covers most homes comfortably, but a full load calculation is worth doing before sizing your system, especially for larger properties with heavy HVAC or well pump draw.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I connect more than one unit?\u003c\/summary\u003e\n\u003cp\u003eYes, up to 16 units can be paralleled together, which is enough headroom to scale from a single large home up to bigger residential or commercial-style installations.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need a licensed electrician to install it?\u003c\/summary\u003e\n\u003cp\u003eGiven the voltages and currents involved, and the added complexity of a grid-interactive hybrid system, installation should be handled by a qualified, licensed electrician or solar installer familiar with your local code and utility interconnection requirements.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003c!-- ============ DOWNLOADS ============ --\u003e\n\u003csection class=\"esk-downloads\"\u003e\n\u003ch3\u003eDocuments \u0026amp; Downloads\u003c\/h3\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2025\/01\/EG4-FlexBoss21-Spec-Sheet.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Spec Sheet \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2025\/01\/FlexBOSS-21-Manual.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e User Manual \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2024\/11\/EG4-FlexBoss21-COC.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UL1741 Certificate \u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ FOOTER ============ --\u003e\n\u003csection class=\"esk-footer\"\u003e\n\u003cp class=\"esk-warranty\"\u003eBacked by a \u003cstrong\u003e10-year manufacturer's warranty\u003c\/strong\u003e covering defects in materials and workmanship.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"EG4","offers":[{"title":"Default Title","offer_id":42331530821687,"sku":"INV027","price":3599.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/EG4_FlexBOSS_21_Front.webp?v=1784838085"},{"product_id":"eg4-wallmount-48v-16kwh-indoor-battery-ess-314ah-eg4-flexboss21-hybrid-inverter-grid-tied-system","title":"EG4 WallMount 48V 16kWh Indoor Battery ESS | 314Ah | EG4 FlexBOSS21 Hybrid Inverter | Grid-Tied System","description":"\u003cdiv class=\"esk-pd esk-pd-b eg4314fb21-pd\"\u003e\n\u003c!-- ============ HERO ============ --\u003e\n\u003csection class=\"esk-hero\"\u003e\n\u003cp class=\"esk-eyebrow\"\u003e48V Grid-Tied ESS · EG4 314Ah Indoor + FlexBOSS21\u003c\/p\u003e\n\u003ch2\u003e16kWh of Certified Energy Storage, Paired With a 16kW Hybrid Inverter\u003c\/h2\u003e\n\u003cp class=\"esk-lead\"\u003eThis system pairs one EG4 314Ah Indoor battery (16kWh nominal, 12.86kWh recommended usable) with one EG4 FlexBOSS21 hybrid inverter — up to 16kW of continuous output with PV and grid combined, and up to 21kW of solar input across 3 MPPT trackers and 5 strings. It's built as a UL 9540-eligible pairing with closed-loop communication, GridBOSS-ready for larger system control, and works grid-tied or fully off-grid.\u003c\/p\u003e\n\u003cdiv aria-hidden=\"true\" class=\"esk-divider\"\u003e\u003csvg preserveaspectratio=\"none\" viewbox=\"0 0 600 20\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" d=\"M0,10 Q25,-4 50,10 T100,10 T150,10 T200,10 T250,10 T300,10 T350,10 T400,10 T450,10 T500,10 T550,10 T600,10\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ STATS ============ --\u003e\n\u003csection class=\"esk-stats\"\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e16kWh\u003c\/span\u003e\u003cspan class=\"label\"\u003eBattery Capacity\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e16kW\u003c\/span\u003e\u003cspan class=\"label\"\u003eOutput (PV + Grid)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e21kW\u003c\/span\u003e\u003cspan class=\"label\"\u003eMax Solar Input\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003eUL 9540\u003c\/span\u003e\u003cspan class=\"label\"\u003eEligible Pairing\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ CONFIGURATION ============ --\u003e\n\u003csection class=\"esk-config\"\u003e\n\u003ch3\u003eWhat's In This System\u003c\/h3\u003e\n\u003cp class=\"esk-config-sub\"\u003eTwo components, pre-matched and sold together.\u003c\/p\u003e\n\u003cdiv class=\"esk-config-grid\"\u003e\n\u003cdiv class=\"esk-config-card\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003crect rx=\"2\" height=\"9\" width=\"17\" y=\"8\" x=\"2\"\u003e\u003c\/rect\u003e\u003crect stroke=\"none\" fill=\"currentColor\" rx=\"1\" height=\"3\" width=\"2.5\" y=\"11\" x=\"19\"\u003e\u003c\/rect\u003e\u003crect stroke=\"none\" fill=\"currentColor\" rx=\"0.6\" height=\"4.4\" width=\"4\" y=\"10.3\" x=\"5\"\u003e\u003c\/rect\u003e\u003c\/svg\u003e\n\u003cp class=\"qty\"\u003eQty 1\u003c\/p\u003e\n\u003ch4\u003eEG4 314Ah Indoor Battery\u003c\/h4\u003e\n\u003cp\u003e16kWh nominal, IP20 indoor-rated, with a third-generation BMS and Auto-ID setup.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-config-card\"\u003e\n\u003csvg aria-hidden=\"true\" fill=\"currentColor\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M13 2 4 14h6l-1 8 9-12h-6l1-8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003cp class=\"qty\"\u003eQty 1\u003c\/p\u003e\n\u003ch4\u003eEG4 FlexBOSS21 Inverter\u003c\/h4\u003e\n\u003cp\u003eUp to 16kW continuous output with PV and grid combined, and 21kW of max solar input.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ FEATURES ============ --\u003e\n\u003csection class=\"esk-features\"\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/Screenshot_2026-07-26_183740.png?v=1785080309\" alt=\"EG4 — product photo\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/Flexboss-All-weather-Rain.webp?v=1784837257\" alt=\"EG4 solar kit — product photo\"\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWhat Makes This System Different\u003c\/h3\u003e\n\u003cdiv class=\"esk-feature-grid\"\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003crect rx=\"2\" height=\"9\" width=\"17\" y=\"8\" x=\"2\"\u003e\u003c\/rect\u003e\u003crect stroke=\"none\" fill=\"currentColor\" rx=\"1\" height=\"3\" width=\"2.5\" y=\"11\" x=\"19\"\u003e\u003c\/rect\u003e\u003crect stroke=\"none\" fill=\"currentColor\" rx=\"0.6\" height=\"4.4\" width=\"4\" y=\"10.3\" x=\"5\"\u003e\u003c\/rect\u003e\u003c\/svg\u003e\n\u003ch4\u003e16kWh Indoor Battery\u003c\/h4\u003e\n\u003cp\u003e12.86kWh of recommended usable capacity, cross-compatible with other EG4 battery models for future scaling.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" fill=\"currentColor\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M13 2 4 14h6l-1 8 9-12h-6l1-8z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003e16kW Combined, 6kW Battery-Only\u003c\/h4\u003e\n\u003cp\u003eUp to 16kW continuous with PV and grid working together, or 6kW continuous from the battery alone if grid and solar are both unavailable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003ccircle r=\"4.2\" cy=\"12\" cx=\"12\"\u003e\u003c\/circle\u003e\u003cpath d=\"M12 3v2M12 19v2M4.2 12H2.2M21.8 12h-2M5.6 5.6l1.4 1.4M17 17l1.4 1.4M18.4 5.6 17 7M7 17l-1.4 1.4\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003e21kW Solar, 3 MPPT \/ 5 Strings\u003c\/h4\u003e\n\u003cp\u003eThree MPPT trackers across five total input strings, for granular tracking on complex or multi-orientation roof layouts.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\" class=\"esk-accent-2\"\u003e\u003cpath d=\"M12 2 4 5v6c0 5 3.4 8.4 8 9.9 4.6-1.5 8-4.9 8-9.9V5l-8-3Z\"\u003e\u003c\/path\u003e\u003cpath d=\"M8.5 12.3 10.8 14.6 15.5 9.9\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eUL 9540-Eligible Pairing\u003c\/h4\u003e\n\u003cp\u003eThis battery and inverter combination is built and certified to be paired together for grid-tied energy storage system installs.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003ccircle r=\"2.5\" cy=\"12\" cx=\"6\"\u003e\u003c\/circle\u003e\u003ccircle r=\"2.5\" cy=\"12\" cx=\"18\"\u003e\u003c\/circle\u003e\u003cpath stroke-dasharray=\"2 2\" d=\"M8.5 12h7\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eGridBOSS Integration\u003c\/h4\u003e\n\u003cp\u003eConnects with EG4's GridBOSS hub for smart load management, AC coupling, and generator support at a system level.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M4 20v-3M9 20v-7M14 20v-11M19 20V4\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eWiFi, Cellular \u0026amp; Ethernet\u003c\/h4\u003e\n\u003cp\u003eThe inverter ships with a WiFi dongle included by default, plus cellular and Ethernet connectivity options for remote monitoring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003crect rx=\"1.5\" height=\"12\" width=\"18\" y=\"5\" x=\"3\"\u003e\u003c\/rect\u003e\u003cpath d=\"M8 20h8M12 17v3\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\n\u003ch4\u003eAuto-ID, 3rd-Gen BMS\u003c\/h4\u003e\n\u003cp\u003eThe battery automatically recognizes and syncs additional units during setup, with improved balancing precision and response time.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feature\"\u003e\n\u003csvg aria-hidden=\"true\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003crect transform=\"rotate(-18 7 12)\" rx=\"3\" height=\"6\" width=\"9\" y=\"9\" x=\"2.5\"\u003e\u003c\/rect\u003e\u003crect transform=\"rotate(-18 17 12)\" rx=\"3\" height=\"6\" width=\"9\" y=\"9\" x=\"12.5\"\u003e\u003c\/rect\u003e\u003c\/svg\u003e\n\u003ch4\u003eParallels Up to 16 Units\u003c\/h4\u003e\n\u003cp\u003eScales from this single-inverter configuration up to large residential or commercial-style installations on the same platform.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cdiv aria-hidden=\"true\" style=\"background: var(--ink-2); color: var(--accent); opacity: 0.7;\" class=\"esk-divider\"\u003e\u003csvg preserveaspectratio=\"none\" viewbox=\"0 0 600 20\"\u003e\u003cpath stroke-linecap=\"round\" stroke-width=\"2\" stroke=\"currentColor\" fill=\"none\" d=\"M0,10 Q25,-4 50,10 T100,10 T150,10 T200,10 T250,10 T300,10 T350,10 T400,10 T450,10 T500,10 T550,10 T600,10\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003c!-- ============ NARRATIVE ============ --\u003e\n\u003csection class=\"esk-narrative\"\u003e\n\u003ch3\u003eOne Number Isn't the Whole Story\u003c\/h3\u003e\n\u003cp\u003eThis system's output rating isn't a single number — 16kW is what the FlexBOSS21 delivers with solar and grid both contributing, while the battery on its own is rated for 6kW continuous. That distinction matters for sizing: a system that looks oversized on paper at \"16kW\" is really built around a 6kW battery-only floor, with solar and grid making up the difference the rest of the time. Add in 21kW of possible solar input across three MPPT trackers, and there's real headroom for larger or more complex roof layouts.\u003c\/p\u003e\n\u003cp\u003eThe battery and inverter are sold as a matched pair specifically because BigBattery has built and validated this exact combination for UL 9540-eligible grid-tied installs, with closed-loop communication handling coordination between the two automatically. The inverter connects over WiFi (dongle included), cellular, or Ethernet, and integrates with EG4's GridBOSS hub for whole-system load management if the install calls for it. The battery stays indoors (IP20), while the inverter's NEMA 4X enclosure is rated for outdoor installation if that's where it needs to go.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- ============ SPECS ============ --\u003e\n\u003csection class=\"esk-specs\"\u003e\n\u003ch3\u003eFull Specifications\u003c\/h3\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003e\u003ca href=\"\/products\/eg4-48v-wallmount-16kwh-indoor-self-heating-battery-314ah-ul9540a\"\u003eBattery — EG4 314Ah Indoor (×1)\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eCapacity\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal voltage\u003c\/td\u003e\n\u003ctd\u003e51.2 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNominal energy capacity\u003c\/td\u003e\n\u003ctd\u003e16 kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsable energy (80% DoD)\u003c\/td\u003e\n\u003ctd\u003e12.86 kWh\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated capacity\u003c\/td\u003e\n\u003ctd\u003e314 Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eCharging \u0026amp; Discharge\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous charge current\u003c\/td\u003e\n\u003ctd\u003e157 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous discharge current\u003c\/td\u003e\n\u003ctd\u003e200 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContinuous charge\/discharge power\u003c\/td\u003e\n\u003ctd\u003e8 kW \/ 10.2 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak power\u003c\/td\u003e\n\u003ctd\u003e12.8 kW (3 sec)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eEnvironmental\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging temp range\u003c\/td\u003e\n\u003ctd\u003e32–122°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarging temp range\u003c\/td\u003e\n\u003ctd\u003e-4–131°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure rating\u003c\/td\u003e\n\u003ctd\u003eIP20 (indoor only)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003ePhysical \u0026amp; Warranty\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e293.2 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (H×W×D)\u003c\/td\u003e\n\u003ctd\u003e34.1 × 18.1 × 9.6 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCycle life\u003c\/td\u003e\n\u003ctd\u003e10,000 @ 0.5C, 80% DoD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 years or 10,000 cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003e\u003ca href=\"\/products\/eg4-flexboss21-21kw-split-phase-hybrid-solar-inverter\"\u003eInverter — EG4 FlexBOSS21 (×1)\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eOutput\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eContinuous output (PV + grid)\u003c\/td\u003e\n\u003ctd\u003e66.7A \/ 16 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContinuous output (battery only)\u003c\/td\u003e\n\u003ctd\u003e50A \/ 6 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePeak power (0.5s \/ 1s)\u003c\/td\u003e\n\u003ctd\u003e24,000W \/ 18,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLocked rotor amps\u003c\/td\u003e\n\u003ctd\u003e195 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransfer time\u003c\/td\u003e\n\u003ctd\u003e20ms default \/ 10ms configurable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eSolar Input\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT channels\u003c\/td\u003e\n\u003ctd\u003e3 (5 strings total)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated current per MPPT\u003c\/td\u003e\n\u003ctd\u003e26A \/ 26A \/ 15A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRec. max solar array (STC)\u003c\/td\u003e\n\u003ctd\u003e21 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT DC voltage range\u003c\/td\u003e\n\u003ctd\u003e120–440 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax efficiency (PV to grid)\u003c\/td\u003e\n\u003ctd\u003e97%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003eBattery \u0026amp; Grid\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery voltage range\u003c\/td\u003e\n\u003ctd\u003e40–60 Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge\/discharge current\u003c\/td\u003e\n\u003ctd\u003e250 A DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax grid pass-through\u003c\/td\u003e\n\u003ctd\u003e90 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC input \/ output breaker\u003c\/td\u003e\n\u003ctd\u003e90A \/ 80A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdle consumption\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;65 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ch4\u003ePhysical, Connectivity \u0026amp; Warranty\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (H×W×D)\u003c\/td\u003e\n\u003ctd\u003e30.43 × 22.28 × 11.22 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e121 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure rating\u003c\/td\u003e\n\u003ctd\u003eNEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnectivity\u003c\/td\u003e\n\u003ctd\u003eWiFi (included), cellular, Ethernet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax parallel units\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 12.5px; color: var(--muted) !important; margin-top: 18px !important;\"\u003eInverter certifications: UL 1741, UL 1741 PCS CRD Test, UL 3141. FCC Part 15 Class B. Battery certifications: UL 1973, UN 38.3.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- ============ SCALABILITY ============ --\u003e\n\u003csection class=\"esk-scale\"\u003e\n\u003ch3\u003eOther Configurations Available\u003c\/h3\u003e\n\u003cp\u003eThis same battery and inverter platform is sold in several sizes. The row below highlighted in your brand color is the configuration this page describes — everything else is shown for reference if a customer needs a different scale.\u003c\/p\u003e\n\u003ctable class=\"esk-scale-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eTier\u003c\/th\u003e\n\u003cth\u003eInverters\u003c\/th\u003e\n\u003cth\u003eBatteries\u003c\/th\u003e\n\u003cth\u003eCapacity\u003c\/th\u003e\n\u003cth\u003eMax Output\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"current\"\u003e\n\u003ctd class=\"tier\"\u003eStandard\u003c\/td\u003e\n\u003ctd\u003e1×\u003c\/td\u003e\n\u003ctd\u003e1×\u003c\/td\u003e\n\u003ctd\u003e16 kWh\u003c\/td\u003e\n\u003ctd\u003e16 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tier\"\u003eStandard\u003c\/td\u003e\n\u003ctd\u003e1×\u003c\/td\u003e\n\u003ctd\u003e2×\u003c\/td\u003e\n\u003ctd\u003e32 kWh\u003c\/td\u003e\n\u003ctd\u003e16 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tier\"\u003eStandard\u003c\/td\u003e\n\u003ctd\u003e1×\u003c\/td\u003e\n\u003ctd\u003e3×\u003c\/td\u003e\n\u003ctd\u003e48 kWh\u003c\/td\u003e\n\u003ctd\u003e16 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tier\"\u003eLarge\u003c\/td\u003e\n\u003ctd\u003e2×\u003c\/td\u003e\n\u003ctd\u003e4×\u003c\/td\u003e\n\u003ctd\u003e64 kWh\u003c\/td\u003e\n\u003ctd\u003e32 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tier\"\u003eLarge\u003c\/td\u003e\n\u003ctd\u003e2×\u003c\/td\u003e\n\u003ctd\u003e6×\u003c\/td\u003e\n\u003ctd\u003e96 kWh\u003c\/td\u003e\n\u003ctd\u003e32 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tier\"\u003e3-Phase\u003c\/td\u003e\n\u003ctd\u003e3×\u003c\/td\u003e\n\u003ctd\u003e6×\u003c\/td\u003e\n\u003ctd\u003e96 kWh\u003c\/td\u003e\n\u003ctd\u003e48 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/section\u003e\n\u003c!-- ============ FAQ ============ --\u003e\n\u003csection class=\"esk-faq\"\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/EG4-314Ah-1024x420.webp?v=1785080293\" alt=\"EG4 solar kit — installation diagram\"\u003e\u003c\/p\u003e\n\n\u003ch3\u003eCommon Questions\u003c\/h3\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat exactly is included in this system?\u003c\/summary\u003e\n\u003cp\u003eOne EG4 314Ah Indoor battery (16kWh) and one EG4 FlexBOSS21 hybrid inverter, sold as a pre-matched, UL 9540-eligible pair.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eIs the output really 16kW, or is that only with solar?\u003c\/summary\u003e\n\u003cp\u003e16kW is what the system delivers with solar and grid both contributing. On battery power alone, with no solar or grid available, continuous output is 6kW. Worth sizing around the 6kW floor if backup power without sun or grid matters for your use case.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat does \"UL 9540-eligible\" mean here?\u003c\/summary\u003e\n\u003cp\u003eIt means this specific battery-and-inverter pairing has been built and validated together for UL 9540 grid-tied energy storage system installs, rather than being a generic combination assembled after the fact.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan the whole system be installed outdoors?\u003c\/summary\u003e\n\u003cp\u003eNot the battery — it's IP20 and indoor-rated. The FlexBOSS21 inverter is NEMA 4X and can go outdoors if that placement makes more sense for the install.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow do I monitor the system remotely?\u003c\/summary\u003e\n\u003cp\u003eThe inverter includes a WiFi dongle by default and also supports cellular and Ethernet connectivity, with app and web-based monitoring.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat's the warranty?\u003c\/summary\u003e\n\u003cp\u003e10 years on both the battery (or 10,000 cycles) and the inverter, covering defects in materials and workmanship.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eDo I need a licensed electrician to install it?\u003c\/summary\u003e\n\u003cp\u003eGiven the voltages, currents, and grid interconnection involved, installation should be handled by a qualified, licensed electrician or solar installer familiar with your local code and utility requirements.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/section\u003e\n\u003c!-- ============ DOWNLOADS ============ --\u003e\n\u003csection class=\"esk-downloads\"\u003e\n\u003ch3\u003eDocuments \u0026amp; Downloads\u003c\/h3\u003e\n\u003cdiv class=\"esk-dl-block\"\u003e\n\u003cp class=\"esk-dl-group-title\"\u003eBattery — EG4 314Ah Indoor\u003c\/p\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/eg4electronics.com\/wp-content\/uploads\/2025\/10\/EG4-WallMount-314Ah-Indoor-Battery-Spec-Sheet.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Spec Sheet \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/eg4electronics.com\/wp-content\/uploads\/2025\/04\/EG4-WallMount-Indoor-314Ah-Battery-User-Manual.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e User Manual \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/eg4electronics.com\/wp-content\/uploads\/2025\/10\/EG4-WallMount-314Ah-Indoor-Battery-Quick-Start-Guide.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Quick Start Guide \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/01\/EG4-WallMount-314Ah-Indoor-Battery-1973-Certificate-of-Compliance.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Certificate of Compliance \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/01\/EG4-WallMount-314Ah-Indoor-Battery-UL-9540A-Test-Verification-of-Conformity.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Certificate of Conformity \u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-dl-block\"\u003e\n\u003cp class=\"esk-dl-group-title\"\u003eInverter — EG4 FlexBOSS21\u003c\/p\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/eg4electronics.com\/wp-content\/uploads\/2024\/10\/EG4-FlexBoss21-Spec-Sheet.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Spec Sheet \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/eg4electronics.com\/wp-content\/uploads\/2024\/08\/FlexBOSS-21-Manual.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e User Manual \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/eg4electronics.com\/wp-content\/uploads\/2024\/11\/EG4-FlexBoss21-COC.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UL1741 Certificate \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/eg4electronics.com\/wp-content\/uploads\/2024\/11\/EG4-FlexBOSS21-UL-1741-PCS-CRD_Test-Verification-of-Conformity.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UL1741 PCS CRD Verification \u003c\/a\u003e \u003ca rel=\"noopener\" href=\"https:\/\/eg4electronics.com\/wp-content\/uploads\/2025\/08\/EG4-FlexBOSS21-FlexBOSS18-UL-3141-CRD-PCS-Verification-of-Conformity.pdf\" class=\"esk-download\" target=\"_blank\"\u003e \u003csvg aria-hidden=\"true\" stroke-linejoin=\"round\" stroke-linecap=\"round\" stroke-width=\"1.7\" stroke=\"currentColor\" fill=\"none\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M12 3v12M7 10l5 5 5-5M4 19h16\"\u003e\u003c\/path\u003e\u003c\/svg\u003e UL3141 Certificate \u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ FOOTER ============ --\u003e\n\u003csection class=\"esk-footer\"\u003e\n\u003cp class=\"esk-warranty\"\u003eBattery and inverter both backed by \u003cstrong\u003e10-year manufacturer's warranties\u003c\/strong\u003e, covering defects in materials and workmanship.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"EG4","offers":[{"title":"1 inverter + 1 battery (16kW + 16kWh)","offer_id":42333854138423,"sku":"K0210","price":7092.0,"currency_code":"USD","in_stock":true},{"title":"1 inverter + 2 batteries (16kW + 32kWh)","offer_id":42333854171191,"sku":"K0211","price":10750.0,"currency_code":"USD","in_stock":true},{"title":"1 inverter + 3 batteries (16kW + 48kWh)","offer_id":42333854203959,"sku":"K0212","price":14408.0,"currency_code":"USD","in_stock":true},{"title":"2 inverters + 4 batteries (32kW + 64kWh)","offer_id":42333854236727,"sku":"K0213","price":21666.0,"currency_code":"USD","in_stock":true},{"title":"2 inverters + 6 batteries (32kW + 96kWh)","offer_id":42333854269495,"sku":"K0214","price":28982.0,"currency_code":"USD","in_stock":true},{"title":"3 inverters + 6 batteries (48kW + 96kWh)","offer_id":42333854302263,"sku":"K0215","price":32582.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/FLEXBOSS21-EG4-314Ah-2.webp?v=1785084900"},{"product_id":"bigbattery-ethos-48v-20-48kwh-battery-1x-eg4-18kpv-12kw-hybrid-inverter-ess-k0956","title":"BigBattery ETHOS 48V 20.48kWh LiFePO4 Battery + 1 x EG4 18kPV Hybrid Inverter ESS | 12kW Output, 18kW PV | UL9540 Whole-Home Backup | K0956","description":"\u003cdiv class=\"esk-jk-pd\"\u003e\n\u003cdiv class=\"esk-hero\"\u003e\n\u003cp class=\"esk-eyebrow\"\u003eEnergy Storage System · 12kW · 20.48kWh · 18kW PV\u003c\/p\u003e\n\u003ch2\u003e20.48kWh of Stackable LiFePO4 Storage with 12kW of Hybrid Inverter Power\u003c\/h2\u003e\n\u003cp class=\"esk-lead\"\u003eA UL 9540 certified whole-home energy storage system: 4 stackable ETHOS 48V LiFePO4 modules (20.48kWh, 4 modules) matched with 1 EG4 18kPV hybrid inverter for 12kW of continuous 120\/240V split-phase output and up to 18kW of solar input.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-rays\"\u003e\u003csvg viewbox=\"0 0 700 22\" preserveaspectratio=\"none\"\u003e\u003cpath d=\"M0,11 L30,4 M40,11 L65,2 M75,11 L95,5 M110,11 L125,3 M140,11 L160,6\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003cpath d=\"M700,11 L670,4 M660,11 L635,2 M625,11 L605,5 M590,11 L575,3 M560,11 L540,6\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003ccircle cx=\"350\" cy=\"11\" r=\"9\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\u003e\u003c\/circle\u003e\u003cpath d=\"M300,11 L180,11 M420,11 L520,11\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\" opacity=\"0.55\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-stats\"\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e12kW\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eContinuous AC Output\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e20.48kWh\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eLiFePO4 Storage\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e18kW\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eMax Solar Input\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e12 Years\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eBattery Warranty\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cfigure class=\"esk-banner\" style=\"padding-top: 32px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-kit-K0956.webp?v=1789927251\u0026amp;width=1400\" alt=\"BigBattery ETHOS + EG4 18kPV energy storage system kit K0956 - 4 battery modules and 1 inverter(s)\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\n\u003csection class=\"esk-overview\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eOverview\u003c\/span\u003e\n\u003ch2\u003eK0956 Overview\u003c\/h2\u003e\n\u003cp\u003eThe K0956 configuration of the BigBattery ETHOS + EG4 18kPV ESS combines 4 ETHOS 5.12kWh battery modules with 1 EG4 18kPV hybrid inverter. ETHOS modules stack on a rack base with a control box on top - no wall mounting, no rack cabinet - so 20.48kWh of storage installs in a footprint of 26.5 x 6.7 inches per stack. Every stack is IP65 \/ NEMA 4X rated and the batteries are UL1973, UL9540A and UN38.3 certified; together with the 18kPV the system is UL 9540 listed, which is what most utilities and inspectors now require for permitted home storage.\u003c\/p\u003e\n\u003cp\u003eEach EG4 18kPV supplies 12,000W of continuous 120\/240V split-phase power (15,500W surge with PV), accepts 18kW of solar on three MPPTs, and passes through 200A of grid power. It works on-grid with export or zero-export, off-grid, or as backup, and talks to the ETHOS control box in closed loop so charging current, state of charge and protection are coordinated automatically. A second and third inverter can be added later for 24kW or 36kW.\u003c\/p\u003e\n\u003cp\u003e20.48kWh is roughly 0.9 days of typical household consumption (22kWh\/day) without sun, and the ETHOS platform scales past 80kWh by adding modules to each control box (up to 16 per box). BigBattery ships from Texas with a 12-year battery warranty, a 10-year inverter warranty and lifetime US-based technical support. Solar panels and racking are not included - pair the system with any 100-600Vdc PV array up to 18kW.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/bigbattery-kits\" title=\"BigBattery Kits\"\u003eBigBattery backup systems\u003c\/a\u003e, \u003ca href=\"\/collections\/bigbattery-batteries\" title=\"BigBattery Batteries\"\u003eBigBattery lithium batteries\u003c\/a\u003e and \u003ca href=\"\/collections\/eg4-inverters\" title=\"EG4 Inverters\"\u003eEG4 inverters\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003cfigure class=\"esk-banner\" style=\"padding-top: 32px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-kit.webp?v=1789927251\u0026amp;width=1400\" alt=\"BigBattery ETHOS 48V 5.12kWh battery module - what is in the box\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\n\u003csection class=\"esk-features alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eFeatures\u003c\/span\u003e\n\u003ch2\u003eK0956 Key Features\u003c\/h2\u003e\n\u003cdiv class=\"esk-feat-grid\"\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e01\u003c\/span\u003e\n\u003ch3\u003eUL 9540 certified ESS\u003c\/h3\u003e\n\u003cp\u003eETHOS battery and EG4 18kPV are certified together as a complete energy storage system, with UL9540A fire-safety testing, UL1973 and UN38.3 on the battery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e02\u003c\/span\u003e\n\u003ch3\u003e20.48kWh stackable LiFePO4\u003c\/h3\u003e\n\u003cp\u003e4 modules of 5.12kWh \/ 100Ah each, 6,000+ cycles, 16S cells and a smart BMS in every module; expand to 80+ kWh by adding modules.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e03\u003c\/span\u003e\n\u003ch3\u003e12kW hybrid power, 18kW solar\u003c\/h3\u003e\n\u003cp\u003eEG4 18kPV: 12kW per unit, three MPPTs, 100-600Vdc input, 200A pass-through, generator input, RSD support and Wi-Fi monitoring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e04\u003c\/span\u003e\n\u003ch3\u003eClosed-loop communication\u003c\/h3\u003e\n\u003cp\u003eCANBus link between control box and inverter for coordinated charging, accurate state of charge and protection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e05\u003c\/span\u003e\n\u003ch3\u003eIP65 \/ NEMA 4X\u003c\/h3\u003e\n\u003cp\u003eBattery stacks and inverter are weather rated for garages, covered patios and utility areas.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e06\u003c\/span\u003e\n\u003ch3\u003eFast, maintenance-free installation\u003c\/h3\u003e\n\u003cp\u003eStack, connect the included cables, and go - no routine servicing, 12-year battery and 10-year inverter warranties.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cfigure class=\"esk-banner\" style=\"padding-top: 32px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-install.jpg?v=1789927251\u0026amp;width=1400\" alt=\"Customer installation - EG4 hybrid inverter with stacked BigBattery ETHOS modules in a utility room\" width=\"1400\" height=\"1867\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\n\u003csection class=\"esk-box\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eIncluded\u003c\/span\u003e\n\u003ch2\u003eWhat's in the Kit\u003c\/h2\u003e\n\u003cul class=\"esk-box-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e4×\u003c\/span\u003e\u003cspan\u003eBigBattery ETHOS 48V 5.12kWh stackable LiFePO4 battery module\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eETHOS control box\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eETHOS rack base\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e2×\u003c\/span\u003e\u003cspan\u003eETHOS stack-to-stack power cable pair (4.9 ft)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eETHOS stack-to-stack comm cable (4.9 ft)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eEG4 18kPV all-in-one hybrid solar inverter (18kW PV \/ 12kW AC)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eETHOS battery top plate cover\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/section\u003e\n\u003cfigure class=\"esk-banner\" style=\"padding-top: 32px;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-inv-open.webp?v=1789927250\u0026amp;width=1400\" alt=\"EG4 18kPV hybrid inverter with wiring compartment open\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\n\u003csection class=\"esk-runtime alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eRuntime\u003c\/span\u003e\n\u003ch2\u003eWhat 20.48kWh of storage can run\u003c\/h2\u003e\n\u003cp class=\"esk-note\"\u003eEstimates assume 85% usable energy and typical load ratings; actual runtime depends on your appliances, weather and settings.\u003c\/p\u003e\n\u003cdiv class=\"esk-run-grid\"\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~0.9 days\u003c\/span\u003e\u003cspan class=\"dev\"\u003eTypical home (22kWh\/day), no sun\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~7 hours\u003c\/span\u003e\u003cspan class=\"dev\"\u003eCentral AC 3-ton (3kW) continuous\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~20 hours\u003c\/span\u003e\u003cspan class=\"dev\"\u003eRefrigerator + freezer (1kW)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e12kW\u003c\/span\u003e\u003cspan class=\"dev\"\u003eContinuous output, whole-house loads\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"esk-faqs\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eFAQ\u003c\/span\u003e\n\u003ch2\u003eK0956 Common Questions\u003c\/h2\u003e\n\u003cdiv class=\"esk-faq-grid\"\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ1\u003c\/span\u003e\n\u003ch3\u003eHow long will 20.48kWh power my home?\u003c\/h3\u003e\n\u003cp\u003eAbout 0.9 days for a typical 22kWh\/day home with no solar input; with solar panels connected to the 18kPV (up to 18kW) the batteries recharge daily.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ2\u003c\/span\u003e\n\u003ch3\u003eDoes the kit include solar panels?\u003c\/h3\u003e\n\u003cp\u003eNo. This is a battery + inverter ESS. Connect any PV array within the inverter limits (100-600Vdc, 18kW per inverter), or run it as grid-charged backup without solar.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ3\u003c\/span\u003e\n\u003ch3\u003eIs it grid-tied or off-grid?\u003c\/h3\u003e\n\u003cp\u003eBoth. The EG4 18kPV is UL1741 certified for grid interaction (export or zero-export) and also runs fully off-grid; it has a generator input as well.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ4\u003c\/span\u003e\n\u003ch3\u003eCan I add more batteries later?\u003c\/h3\u003e\n\u003cp\u003eYes. Each ETHOS control box supports up to 16 modules, and BigBattery sells single ETHOS modules, so the system can grow past 80kWh.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ5\u003c\/span\u003e\n\u003ch3\u003eDoes it ship free?\u003c\/h3\u003e\n\u003cp\u003eYes - free freight shipping within the contiguous USA, $0 sales tax in most states.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"esk-specs alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eData\u003c\/span\u003e\n\u003ch2\u003eK0956 Specifications\u003c\/h2\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003eBigBattery ETHOS 48V 5.12kWh Stackable Battery Module (per module)\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\n\u003ctd colspan=\"2\"\u003eBattery\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem voltage\u003c\/td\u003e\n\u003ctd\u003e48V (51.2V nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry\u003c\/td\u003e\n\u003ctd\u003eLiFePO4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity per module\u003c\/td\u003e\n\u003ctd\u003e5.12kWh \/ 100Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCell configuration\u003c\/td\u003e\n\u003ctd\u003e16S per module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging voltage range\u003c\/td\u003e\n\u003ctd\u003e55.6-57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge voltage\u003c\/td\u003e\n\u003ctd\u003e57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating voltage range\u003c\/td\u003e\n\u003ctd\u003e48-57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuggested low-voltage cutoff\u003c\/td\u003e\n\u003ctd\u003e48-50.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMS cutoff range\u003c\/td\u003e\n\u003ctd\u003e42-47V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous discharge current\u003c\/td\u003e\n\u003ctd\u003e100A per module (200A per control box)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax discharge peak current\u003c\/td\u003e\n\u003ctd\u003e300A (max 5 seconds)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge current\u003c\/td\u003e\n\u003ctd\u003e200A per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCycle life\u003c\/td\u003e\n\u003ctd\u003e6,000+ cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\n\u003ctd colspan=\"2\"\u003eGeneral\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharge temperature\u003c\/td\u003e\n\u003ctd\u003e32-113°F (0-45°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarge temperature\u003c\/td\u003e\n\u003ctd\u003e-4-140°F (-20-60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptimal discharge temperature\u003c\/td\u003e\n\u003ctd\u003e59-95°F (15-35°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage (SoC \u0026gt;50%)\u003c\/td\u003e\n\u003ctd\u003e-4-113°F, max 6 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule footprint\u003c\/td\u003e\n\u003ctd\u003e26.5 in W x 6.7 in D (674 x 170 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax connections\u003c\/td\u003e\n\u003ctd\u003eUp to 16 modules per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eCANBus \/ RS485 (closed-loop with EG4 18kPV)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL9540, UL9540A, UL1973, UN38.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e12 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003e\u003ca href=\"\/products\/eg4-12kw-18kpv-hybrid-inverter\"\u003eEG4 18kPV All-in-One Hybrid Inverter (per inverter)\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\n\u003ctd colspan=\"2\"\u003eAC Output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power\u003c\/td\u003e\n\u003ctd\u003e12,000W continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput voltage\u003c\/td\u003e\n\u003ctd\u003e120\/240Vac split-phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous output current\u003c\/td\u003e\n\u003ctd\u003e50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous line wattage\u003c\/td\u003e\n\u003ctd\u003e8,000W per 120V leg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge with PV\u003c\/td\u003e\n\u003ctd\u003e14,700W (10 min) \/ 15,500W (5 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge without PV\u003c\/td\u003e\n\u003ctd\u003e13,500W (10 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower factor\u003c\/td\u003e\n\u003ctd\u003e0.99 (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;5% (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransfer time\u003c\/td\u003e\n\u003ctd\u003e10-20ms (single) \/ 20ms (parallel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax parallel\u003c\/td\u003e\n\u003ctd\u003e10 units\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\n\u003ctd colspan=\"2\"\u003eAC Input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrid input\u003c\/td\u003e\n\u003ctd\u003e120\/240Vac, 50\/60Hz, 180-270Vac\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC input power\u003c\/td\u003e\n\u003ctd\u003e12,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC bypass\u003c\/td\u003e\n\u003ctd\u003e200A (grid) \/ 90A (generator)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\n\u003ctd colspan=\"2\"\u003ePV Input\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT trackers\u003c\/td\u003e\n\u003ctd\u003e3 (2 inputs on MPPT 1, 1 each on MPPT 2 and 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax PV array power\u003c\/td\u003e\n\u003ctd\u003e18,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax input current\u003c\/td\u003e\n\u003ctd\u003e25A (MPPT 1) \/ 15A (MPPT 2 and 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC input voltage range\u003c\/td\u003e\n\u003ctd\u003e100-600Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStart-up voltage\u003c\/td\u003e\n\u003ctd\u003e100Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT operating range\u003c\/td\u003e\n\u003ctd\u003e140-500Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax efficiency\u003c\/td\u003e\n\u003ctd\u003e94-99.9%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\n\u003ctd colspan=\"2\"\u003eBattery and General\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery voltage\u003c\/td\u003e\n\u003ctd\u003e48Vdc nominal, 40-60Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge \/ discharge current\u003c\/td\u003e\n\u003ctd\u003e250A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdle consumption\u003c\/td\u003e\n\u003ctd\u003e~70W normal \/ ~18W standby\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e-13 to 140°F (-25 to 60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAltitude\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;6,561 ft (2,000 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise\u003c\/td\u003e\n\u003ctd\u003e68dB at 3 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eRS485 \/ CANBus \/ Wi-Fi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e20.5 x 11.2 x 34.3 in (520 x 285 x 871 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e121 lb (55 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003csection class=\"esk-downloads alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eAdditional Documentation\u003c\/span\u003e\n\u003ch2\u003eDocuments \u0026amp; Downloads\u003c\/h2\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ETHOS-SpecSheet-1.4-BatteryCB.pdf?v=1789927251\" rel=\"noopener\" target=\"_blank\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS Battery Spec Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf?v=1789927252\" rel=\"noopener\" target=\"_blank\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS + EG4 ESS User Manual (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-UL9540A-Certificate-1.pdf?v=1789927251\" rel=\"noopener\" target=\"_blank\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UL9540A Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-UL1973-ETHOS.pdf?v=1789927251\" rel=\"noopener\" target=\"_blank\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UL1973 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-48V-ETHOS-DOC-UN38.3.pdf?v=1789927252\" rel=\"noopener\" target=\"_blank\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UN38.3 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-SDS_BigBattery_LFP-1.pdf?v=1789927252\" rel=\"noopener\" target=\"_blank\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e BigBattery LFP Safety Data Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Spec-Sheet.pdf?v=1789927253\" rel=\"noopener\" target=\"_blank\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV Spec Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Manual-1.pdf?v=1789927252\" rel=\"noopener\" target=\"_blank\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV User Manual (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Certification.pdf?v=1789927252\" rel=\"noopener\" target=\"_blank\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV UL1741 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-RSD-Initiator-Install-Instructions-EG4-18kPV-Version-1-External.pdf?v=1789927252\" rel=\"noopener\" target=\"_blank\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV Rapid Shutdown Wiring Guide (PDF)\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003cdiv class=\"esk-footer\"\u003e\n\u003cp\u003e\u003cstrong\u003eFree shipping\u003c\/strong\u003e within the contiguous USA · \u003cstrong\u003e$0 sales tax\u003c\/strong\u003e in most states · Questions? Call \u003ca href=\"tel:+13073177213\"\u003e+1 307 317 7213\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BigBattery","offers":[{"title":"Default Title","offer_id":50214628032567,"sku":"K0956","price":8683.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/20-kWh-x4-Batteries-KIT0956-V2.webp?v=1789927930"},{"product_id":"bigbattery-ethos-48v-30-72kwh-battery-1x-eg4-18kpv-12kw-hybrid-inverter-ess-k0957","title":"BigBattery ETHOS 48V 30.72kWh LiFePO4 Battery + 1 x EG4 18kPV Hybrid Inverter ESS | 12kW Output, 18kW PV | UL9540 Whole-Home Backup | K0957","description":"\u003cdiv class=\"esk-jk-pd\"\u003e\n\u003cdiv class=\"esk-hero\"\u003e\n\u003cp class=\"esk-eyebrow\"\u003eEnergy Storage System · 12kW · 30.72kWh · 18kW PV\u003c\/p\u003e\n\u003ch2\u003e30.72kWh of Stackable LiFePO4 Storage with 12kW of Hybrid Inverter Power\u003c\/h2\u003e\n\u003cp class=\"esk-lead\"\u003eA UL 9540 certified whole-home energy storage system: 6 stackable ETHOS 48V LiFePO4 modules (30.72kWh, 6 modules) matched with 1 EG4 18kPV hybrid inverter for 12kW of continuous 120\/240V split-phase output and up to 18kW of solar input.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-rays\"\u003e\u003csvg viewbox=\"0 0 700 22\" preserveaspectratio=\"none\"\u003e\u003cpath d=\"M0,11 L30,4 M40,11 L65,2 M75,11 L95,5 M110,11 L125,3 M140,11 L160,6\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003cpath d=\"M700,11 L670,4 M660,11 L635,2 M625,11 L605,5 M590,11 L575,3 M560,11 L540,6\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003ccircle cx=\"350\" cy=\"11\" r=\"9\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\u003e\u003c\/circle\u003e\u003cpath d=\"M300,11 L180,11 M420,11 L520,11\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\" opacity=\"0.55\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-stats\"\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e12kW\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eContinuous AC Output\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e30.72kWh\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eLiFePO4 Storage\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e18kW\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eMax Solar Input\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e12 Years\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eBattery Warranty\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-kit-K0957.webp?v=1789927252\u0026amp;width=1400\" alt=\"BigBattery ETHOS + EG4 18kPV energy storage system kit K0957 - 6 battery modules and 1 inverter(s)\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-overview\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eOverview\u003c\/span\u003e\u003ch2\u003eK0957 Overview\u003c\/h2\u003e\n\u003cp\u003eThe K0957 configuration of the BigBattery ETHOS + EG4 18kPV ESS combines 6 ETHOS 5.12kWh battery modules with 1 EG4 18kPV hybrid inverter. ETHOS modules stack on a rack base with a control box on top - no wall mounting, no rack cabinet - so 30.72kWh of storage installs in a footprint of 26.5 x 6.7 inches per stack. Every stack is IP65 \/ NEMA 4X rated and the batteries are UL1973, UL9540A and UN38.3 certified; together with the 18kPV the system is UL 9540 listed, which is what most utilities and inspectors now require for permitted home storage.\u003c\/p\u003e\n\u003cp\u003eEach EG4 18kPV supplies 12,000W of continuous 120\/240V split-phase power (15,500W surge with PV), accepts 18kW of solar on three MPPTs, and passes through 200A of grid power. It works on-grid with export or zero-export, off-grid, or as backup, and talks to the ETHOS control box in closed loop so charging current, state of charge and protection are coordinated automatically. A second and third inverter can be added later for 24kW or 36kW.\u003c\/p\u003e\n\u003cp\u003e30.72kWh is roughly 1.4 days of typical household consumption (22kWh\/day) without sun, and the ETHOS platform scales past 80kWh by adding modules to each control box (up to 16 per box). BigBattery ships from Texas with a 12-year battery warranty, a 10-year inverter warranty and lifetime US-based technical support. Solar panels and racking are not included - pair the system with any 100-600Vdc PV array up to 18kW.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/bigbattery-kits\" title=\"BigBattery Kits\"\u003eBigBattery backup systems\u003c\/a\u003e, \u003ca href=\"\/collections\/bigbattery-batteries\" title=\"BigBattery Batteries\"\u003eBigBattery lithium batteries\u003c\/a\u003e and \u003ca href=\"\/collections\/eg4-inverters\" title=\"EG4 Inverters\"\u003eEG4 inverters\u003c\/a\u003e.\u003c\/p\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-kit.webp?v=1789927251\u0026amp;width=1400\" alt=\"BigBattery ETHOS 48V 5.12kWh battery module - what is in the box\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-features alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eFeatures\u003c\/span\u003e\u003ch2\u003eK0957 Key Features\u003c\/h2\u003e\n\u003cdiv class=\"esk-feat-grid\"\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e01\u003c\/span\u003e\u003ch3\u003eUL 9540 certified ESS\u003c\/h3\u003e\n\u003cp\u003eETHOS battery and EG4 18kPV are certified together as a complete energy storage system, with UL9540A fire-safety testing, UL1973 and UN38.3 on the battery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e02\u003c\/span\u003e\u003ch3\u003e30.72kWh stackable LiFePO4\u003c\/h3\u003e\n\u003cp\u003e6 modules of 5.12kWh \/ 100Ah each, 6,000+ cycles, 16S cells and a smart BMS in every module; expand to 80+ kWh by adding modules.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e03\u003c\/span\u003e\u003ch3\u003e12kW hybrid power, 18kW solar\u003c\/h3\u003e\n\u003cp\u003eEG4 18kPV: 12kW per unit, three MPPTs, 100-600Vdc input, 200A pass-through, generator input, RSD support and Wi-Fi monitoring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e04\u003c\/span\u003e\u003ch3\u003eClosed-loop communication\u003c\/h3\u003e\n\u003cp\u003eCANBus link between control box and inverter for coordinated charging, accurate state of charge and protection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e05\u003c\/span\u003e\u003ch3\u003eIP65 \/ NEMA 4X\u003c\/h3\u003e\n\u003cp\u003eBattery stacks and inverter are weather rated for garages, covered patios and utility areas.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e06\u003c\/span\u003e\u003ch3\u003eFast, maintenance-free installation\u003c\/h3\u003e\n\u003cp\u003eStack, connect the included cables, and go - no routine servicing, 12-year battery and 10-year inverter warranties.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-install.jpg?v=1789927251\u0026amp;width=1400\" alt=\"Customer installation - EG4 hybrid inverter with stacked BigBattery ETHOS modules in a utility room\" width=\"1400\" height=\"1867\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-box\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eIncluded\u003c\/span\u003e\u003ch2\u003eWhat's in the Kit\u003c\/h2\u003e\n\u003cul class=\"esk-box-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e6×\u003c\/span\u003e\u003cspan\u003eBigBattery ETHOS 48V 5.12kWh stackable LiFePO4 battery module\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eETHOS battery top plate cover\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eETHOS control box\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eETHOS rack base\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eEG4 18kPV all-in-one hybrid solar inverter (18kW PV \/ 12kW AC)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e2×\u003c\/span\u003e\u003cspan\u003eETHOS stack-to-stack power cable pair (4.9 ft)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eETHOS stack-to-stack comm cable (4.9 ft)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-inv-open.webp?v=1789927250\u0026amp;width=1400\" alt=\"EG4 18kPV hybrid inverter with wiring compartment open\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-runtime alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eRuntime\u003c\/span\u003e\u003ch2\u003eWhat 30.72kWh of storage can run\u003c\/h2\u003e\n\u003cp class=\"esk-note\"\u003eEstimates assume 85% usable energy and typical load ratings; actual runtime depends on your appliances, weather and settings.\u003c\/p\u003e\n\u003cdiv class=\"esk-run-grid\"\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~1.4 days\u003c\/span\u003e\u003cspan class=\"dev\"\u003eTypical home (22kWh\/day), no sun\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~10 hours\u003c\/span\u003e\u003cspan class=\"dev\"\u003eCentral AC 3-ton (3kW) continuous\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~31 hours\u003c\/span\u003e\u003cspan class=\"dev\"\u003eRefrigerator + freezer (1kW)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e12kW\u003c\/span\u003e\u003cspan class=\"dev\"\u003eContinuous output, whole-house loads\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-faqs\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eFAQ\u003c\/span\u003e\u003ch2\u003eK0957 Common Questions\u003c\/h2\u003e\n\u003cdiv class=\"esk-faq-grid\"\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ1\u003c\/span\u003e\u003ch3\u003eHow long will 30.72kWh power my home?\u003c\/h3\u003e\n\u003cp\u003eAbout 1.4 days for a typical 22kWh\/day home with no solar input; with solar panels connected to the 18kPV (up to 18kW) the batteries recharge daily.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ2\u003c\/span\u003e\u003ch3\u003eDoes the kit include solar panels?\u003c\/h3\u003e\n\u003cp\u003eNo. This is a battery + inverter ESS. Connect any PV array within the inverter limits (100-600Vdc, 18kW per inverter), or run it as grid-charged backup without solar.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ3\u003c\/span\u003e\u003ch3\u003eIs it grid-tied or off-grid?\u003c\/h3\u003e\n\u003cp\u003eBoth. The EG4 18kPV is UL1741 certified for grid interaction (export or zero-export) and also runs fully off-grid; it has a generator input as well.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ4\u003c\/span\u003e\u003ch3\u003eCan I add more batteries later?\u003c\/h3\u003e\n\u003cp\u003eYes. Each ETHOS control box supports up to 16 modules, and BigBattery sells single ETHOS modules, so the system can grow past 80kWh.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ5\u003c\/span\u003e\u003ch3\u003eDoes it ship free?\u003c\/h3\u003e\n\u003cp\u003eYes - free freight shipping within the contiguous USA, $0 sales tax in most states.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-specs alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eData\u003c\/span\u003e\u003ch2\u003eK0957 Specifications\u003c\/h2\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003eBigBattery ETHOS 48V 5.12kWh Stackable Battery Module (per module)\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eBattery\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem voltage\u003c\/td\u003e\n\u003ctd\u003e48V (51.2V nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry\u003c\/td\u003e\n\u003ctd\u003eLiFePO4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity per module\u003c\/td\u003e\n\u003ctd\u003e5.12kWh \/ 100Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCell configuration\u003c\/td\u003e\n\u003ctd\u003e16S per module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging voltage range\u003c\/td\u003e\n\u003ctd\u003e55.6-57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge voltage\u003c\/td\u003e\n\u003ctd\u003e57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating voltage range\u003c\/td\u003e\n\u003ctd\u003e48-57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuggested low-voltage cutoff\u003c\/td\u003e\n\u003ctd\u003e48-50.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMS cutoff range\u003c\/td\u003e\n\u003ctd\u003e42-47V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous discharge current\u003c\/td\u003e\n\u003ctd\u003e100A per module (200A per control box)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax discharge peak current\u003c\/td\u003e\n\u003ctd\u003e300A (max 5 seconds)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge current\u003c\/td\u003e\n\u003ctd\u003e200A per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCycle life\u003c\/td\u003e\n\u003ctd\u003e6,000+ cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eGeneral\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharge temperature\u003c\/td\u003e\n\u003ctd\u003e32-113°F (0-45°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarge temperature\u003c\/td\u003e\n\u003ctd\u003e-4-140°F (-20-60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptimal discharge temperature\u003c\/td\u003e\n\u003ctd\u003e59-95°F (15-35°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage (SoC \u0026gt;50%)\u003c\/td\u003e\n\u003ctd\u003e-4-113°F, max 6 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule footprint\u003c\/td\u003e\n\u003ctd\u003e26.5 in W x 6.7 in D (674 x 170 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax connections\u003c\/td\u003e\n\u003ctd\u003eUp to 16 modules per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eCANBus \/ RS485 (closed-loop with EG4 18kPV)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL9540, UL9540A, UL1973, UN38.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e12 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003e\u003ca href=\"\/products\/eg4-12kw-18kpv-hybrid-inverter\"\u003eEG4 18kPV All-in-One Hybrid Inverter (per inverter)\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eAC Output\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power\u003c\/td\u003e\n\u003ctd\u003e12,000W continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput voltage\u003c\/td\u003e\n\u003ctd\u003e120\/240Vac split-phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous output current\u003c\/td\u003e\n\u003ctd\u003e50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous line wattage\u003c\/td\u003e\n\u003ctd\u003e8,000W per 120V leg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge with PV\u003c\/td\u003e\n\u003ctd\u003e14,700W (10 min) \/ 15,500W (5 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge without PV\u003c\/td\u003e\n\u003ctd\u003e13,500W (10 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower factor\u003c\/td\u003e\n\u003ctd\u003e0.99 (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;5% (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransfer time\u003c\/td\u003e\n\u003ctd\u003e10-20ms (single) \/ 20ms (parallel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax parallel\u003c\/td\u003e\n\u003ctd\u003e10 units\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eAC Input\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrid input\u003c\/td\u003e\n\u003ctd\u003e120\/240Vac, 50\/60Hz, 180-270Vac\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC input power\u003c\/td\u003e\n\u003ctd\u003e12,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC bypass\u003c\/td\u003e\n\u003ctd\u003e200A (grid) \/ 90A (generator)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003ePV Input\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT trackers\u003c\/td\u003e\n\u003ctd\u003e3 (2 inputs on MPPT 1, 1 each on MPPT 2 and 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax PV array power\u003c\/td\u003e\n\u003ctd\u003e18,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax input current\u003c\/td\u003e\n\u003ctd\u003e25A (MPPT 1) \/ 15A (MPPT 2 and 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC input voltage range\u003c\/td\u003e\n\u003ctd\u003e100-600Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStart-up voltage\u003c\/td\u003e\n\u003ctd\u003e100Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT operating range\u003c\/td\u003e\n\u003ctd\u003e140-500Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax efficiency\u003c\/td\u003e\n\u003ctd\u003e94-99.9%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eBattery and General\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery voltage\u003c\/td\u003e\n\u003ctd\u003e48Vdc nominal, 40-60Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge \/ discharge current\u003c\/td\u003e\n\u003ctd\u003e250A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdle consumption\u003c\/td\u003e\n\u003ctd\u003e~70W normal \/ ~18W standby\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e-13 to 140°F (-25 to 60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAltitude\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;6,561 ft (2,000 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise\u003c\/td\u003e\n\u003ctd\u003e68dB at 3 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eRS485 \/ CANBus \/ Wi-Fi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e20.5 x 11.2 x 34.3 in (520 x 285 x 871 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e121 lb (55 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-downloads alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eAdditional Documentation\u003c\/span\u003e\u003ch2\u003eDocuments \u0026amp; Downloads\u003c\/h2\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ETHOS-SpecSheet-1.4-BatteryCB.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS Battery Spec Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS + EG4 ESS User Manual (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-UL9540A-Certificate-1.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UL9540A Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-UL1973-ETHOS.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UL1973 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-48V-ETHOS-DOC-UN38.3.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UN38.3 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-SDS_BigBattery_LFP-1.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e BigBattery LFP Safety Data Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Spec-Sheet.pdf?v=1789927253\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV Spec Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Manual-1.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV User Manual (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Certification.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV UL1741 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-RSD-Initiator-Install-Instructions-EG4-18kPV-Version-1-External.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV Rapid Shutdown Wiring Guide (PDF)\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003cdiv class=\"esk-footer\"\u003e\u003cp\u003e\u003cstrong\u003eFree shipping\u003c\/strong\u003e within the contiguous USA · \u003cstrong\u003e$0 sales tax\u003c\/strong\u003e in most states · Questions? Call \u003ca href=\"tel:+13073177213\"\u003e+1 307 317 7213\u003c\/a\u003e\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BigBattery","offers":[{"title":"Default Title","offer_id":50214628065335,"sku":"K0957","price":10808.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/30-kWh-x6-Batteries-KIT0957-V2.webp?v=1789927936"},{"product_id":"bigbattery-ethos-48v-40-96kwh-battery-1x-eg4-18kpv-12kw-hybrid-inverter-ess-k0753","title":"BigBattery ETHOS 48V 40.96kWh LiFePO4 Battery + 1 x EG4 18kPV Hybrid Inverter ESS | 12kW Output, 18kW PV | UL9540 Whole-Home Backup | K0753","description":"\u003cdiv class=\"esk-jk-pd\"\u003e\n\u003cdiv class=\"esk-hero\"\u003e\n\u003cp class=\"esk-eyebrow\"\u003eEnergy Storage System · 12kW · 40.96kWh · 18kW PV\u003c\/p\u003e\n\u003ch2\u003e40.96kWh of Stackable LiFePO4 Storage with 12kW of Hybrid Inverter Power\u003c\/h2\u003e\n\u003cp class=\"esk-lead\"\u003eA UL 9540 certified whole-home energy storage system: 8 stackable ETHOS 48V LiFePO4 modules (40.96kWh, 8 modules) matched with 1 EG4 18kPV hybrid inverter for 12kW of continuous 120\/240V split-phase output and up to 18kW of solar input.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-rays\"\u003e\u003csvg viewbox=\"0 0 700 22\" preserveaspectratio=\"none\"\u003e\u003cpath d=\"M0,11 L30,4 M40,11 L65,2 M75,11 L95,5 M110,11 L125,3 M140,11 L160,6\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003cpath d=\"M700,11 L670,4 M660,11 L635,2 M625,11 L605,5 M590,11 L575,3 M560,11 L540,6\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003ccircle cx=\"350\" cy=\"11\" r=\"9\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\u003e\u003c\/circle\u003e\u003cpath d=\"M300,11 L180,11 M420,11 L520,11\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\" opacity=\"0.55\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-stats\"\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e12kW\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eContinuous AC Output\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e40.96kWh\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eLiFePO4 Storage\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e18kW\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eMax Solar Input\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e12 Years\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eBattery Warranty\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-kit-K0753.webp?v=1789927252\u0026amp;width=1400\" alt=\"BigBattery ETHOS + EG4 18kPV energy storage system kit K0753 - 8 battery modules and 1 inverter(s)\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-overview\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eOverview\u003c\/span\u003e\u003ch2\u003eK0753 Overview\u003c\/h2\u003e\n\u003cp\u003eThe K0753 configuration of the BigBattery ETHOS + EG4 18kPV ESS combines 8 ETHOS 5.12kWh battery modules with 1 EG4 18kPV hybrid inverter. ETHOS modules stack on a rack base with a control box on top - no wall mounting, no rack cabinet - so 40.96kWh of storage installs in a footprint of 26.5 x 6.7 inches per stack. Every stack is IP65 \/ NEMA 4X rated and the batteries are UL1973, UL9540A and UN38.3 certified; together with the 18kPV the system is UL 9540 listed, which is what most utilities and inspectors now require for permitted home storage.\u003c\/p\u003e\n\u003cp\u003eEach EG4 18kPV supplies 12,000W of continuous 120\/240V split-phase power (15,500W surge with PV), accepts 18kW of solar on three MPPTs, and passes through 200A of grid power. It works on-grid with export or zero-export, off-grid, or as backup, and talks to the ETHOS control box in closed loop so charging current, state of charge and protection are coordinated automatically. A second and third inverter can be added later for 24kW or 36kW.\u003c\/p\u003e\n\u003cp\u003e40.96kWh is roughly 1.9 days of typical household consumption (22kWh\/day) without sun, and the ETHOS platform scales past 80kWh by adding modules to each control box (up to 16 per box). BigBattery ships from Texas with a 12-year battery warranty, a 10-year inverter warranty and lifetime US-based technical support. Solar panels and racking are not included - pair the system with any 100-600Vdc PV array up to 18kW.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/bigbattery-kits\" title=\"BigBattery Kits\"\u003eBigBattery backup systems\u003c\/a\u003e, \u003ca href=\"\/collections\/bigbattery-batteries\" title=\"BigBattery Batteries\"\u003eBigBattery lithium batteries\u003c\/a\u003e and \u003ca href=\"\/collections\/eg4-inverters\" title=\"EG4 Inverters\"\u003eEG4 inverters\u003c\/a\u003e.\u003c\/p\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-kit.webp?v=1789927251\u0026amp;width=1400\" alt=\"BigBattery ETHOS 48V 5.12kWh battery module - what is in the box\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-features alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eFeatures\u003c\/span\u003e\u003ch2\u003eK0753 Key Features\u003c\/h2\u003e\n\u003cdiv class=\"esk-feat-grid\"\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e01\u003c\/span\u003e\u003ch3\u003eUL 9540 certified ESS\u003c\/h3\u003e\n\u003cp\u003eETHOS battery and EG4 18kPV are certified together as a complete energy storage system, with UL9540A fire-safety testing, UL1973 and UN38.3 on the battery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e02\u003c\/span\u003e\u003ch3\u003e40.96kWh stackable LiFePO4\u003c\/h3\u003e\n\u003cp\u003e8 modules of 5.12kWh \/ 100Ah each, 6,000+ cycles, 16S cells and a smart BMS in every module; expand to 80+ kWh by adding modules.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e03\u003c\/span\u003e\u003ch3\u003e12kW hybrid power, 18kW solar\u003c\/h3\u003e\n\u003cp\u003eEG4 18kPV: 12kW per unit, three MPPTs, 100-600Vdc input, 200A pass-through, generator input, RSD support and Wi-Fi monitoring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e04\u003c\/span\u003e\u003ch3\u003eClosed-loop communication\u003c\/h3\u003e\n\u003cp\u003eCANBus link between control box and inverter for coordinated charging, accurate state of charge and protection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e05\u003c\/span\u003e\u003ch3\u003eIP65 \/ NEMA 4X\u003c\/h3\u003e\n\u003cp\u003eBattery stacks and inverter are weather rated for garages, covered patios and utility areas.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e06\u003c\/span\u003e\u003ch3\u003eFast, maintenance-free installation\u003c\/h3\u003e\n\u003cp\u003eStack, connect the included cables, and go - no routine servicing, 12-year battery and 10-year inverter warranties.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-install.jpg?v=1789927251\u0026amp;width=1400\" alt=\"Customer installation - EG4 hybrid inverter with stacked BigBattery ETHOS modules in a utility room\" width=\"1400\" height=\"1867\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-box\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eIncluded\u003c\/span\u003e\u003ch2\u003eWhat's in the Kit\u003c\/h2\u003e\n\u003cul class=\"esk-box-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e8×\u003c\/span\u003e\u003cspan\u003eBigBattery ETHOS 48V 5.12kWh stackable LiFePO4 battery module\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eETHOS control box\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e2×\u003c\/span\u003e\u003cspan\u003eETHOS rack base\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eEG4 18kPV all-in-one hybrid solar inverter (18kW PV \/ 12kW AC)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003e10kWh ETHOS controller-to-battery cable\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e2×\u003c\/span\u003e\u003cspan\u003eETHOS stack-to-stack comm cable (4.9 ft)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e4×\u003c\/span\u003e\u003cspan\u003eETHOS stack-to-stack power cable pair (4.9 ft)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e2×\u003c\/span\u003e\u003cspan\u003eETHOS battery top plate cover\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-inv-open.webp?v=1789927250\u0026amp;width=1400\" alt=\"EG4 18kPV hybrid inverter with wiring compartment open\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-runtime alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eRuntime\u003c\/span\u003e\u003ch2\u003eWhat 40.96kWh of storage can run\u003c\/h2\u003e\n\u003cp class=\"esk-note\"\u003eEstimates assume 85% usable energy and typical load ratings; actual runtime depends on your appliances, weather and settings.\u003c\/p\u003e\n\u003cdiv class=\"esk-run-grid\"\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~1.9 days\u003c\/span\u003e\u003cspan class=\"dev\"\u003eTypical home (22kWh\/day), no sun\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~14 hours\u003c\/span\u003e\u003cspan class=\"dev\"\u003eCentral AC 3-ton (3kW) continuous\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~41 hours\u003c\/span\u003e\u003cspan class=\"dev\"\u003eRefrigerator + freezer (1kW)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e12kW\u003c\/span\u003e\u003cspan class=\"dev\"\u003eContinuous output, whole-house loads\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-faqs\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eFAQ\u003c\/span\u003e\u003ch2\u003eK0753 Common Questions\u003c\/h2\u003e\n\u003cdiv class=\"esk-faq-grid\"\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ1\u003c\/span\u003e\u003ch3\u003eHow long will 40.96kWh power my home?\u003c\/h3\u003e\n\u003cp\u003eAbout 1.9 days for a typical 22kWh\/day home with no solar input; with solar panels connected to the 18kPV (up to 18kW) the batteries recharge daily.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ2\u003c\/span\u003e\u003ch3\u003eDoes the kit include solar panels?\u003c\/h3\u003e\n\u003cp\u003eNo. This is a battery + inverter ESS. Connect any PV array within the inverter limits (100-600Vdc, 18kW per inverter), or run it as grid-charged backup without solar.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ3\u003c\/span\u003e\u003ch3\u003eIs it grid-tied or off-grid?\u003c\/h3\u003e\n\u003cp\u003eBoth. The EG4 18kPV is UL1741 certified for grid interaction (export or zero-export) and also runs fully off-grid; it has a generator input as well.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ4\u003c\/span\u003e\u003ch3\u003eCan I add more batteries later?\u003c\/h3\u003e\n\u003cp\u003eYes. Each ETHOS control box supports up to 16 modules, and BigBattery sells single ETHOS modules, so the system can grow past 80kWh.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ5\u003c\/span\u003e\u003ch3\u003eDoes it ship free?\u003c\/h3\u003e\n\u003cp\u003eYes - free freight shipping within the contiguous USA, $0 sales tax in most states.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-specs alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eData\u003c\/span\u003e\u003ch2\u003eK0753 Specifications\u003c\/h2\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003eBigBattery ETHOS 48V 5.12kWh Stackable Battery Module (per module)\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eBattery\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem voltage\u003c\/td\u003e\n\u003ctd\u003e48V (51.2V nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry\u003c\/td\u003e\n\u003ctd\u003eLiFePO4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity per module\u003c\/td\u003e\n\u003ctd\u003e5.12kWh \/ 100Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCell configuration\u003c\/td\u003e\n\u003ctd\u003e16S per module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging voltage range\u003c\/td\u003e\n\u003ctd\u003e55.6-57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge voltage\u003c\/td\u003e\n\u003ctd\u003e57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating voltage range\u003c\/td\u003e\n\u003ctd\u003e48-57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuggested low-voltage cutoff\u003c\/td\u003e\n\u003ctd\u003e48-50.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMS cutoff range\u003c\/td\u003e\n\u003ctd\u003e42-47V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous discharge current\u003c\/td\u003e\n\u003ctd\u003e100A per module (200A per control box)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax discharge peak current\u003c\/td\u003e\n\u003ctd\u003e300A (max 5 seconds)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge current\u003c\/td\u003e\n\u003ctd\u003e200A per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCycle life\u003c\/td\u003e\n\u003ctd\u003e6,000+ cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eGeneral\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharge temperature\u003c\/td\u003e\n\u003ctd\u003e32-113°F (0-45°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarge temperature\u003c\/td\u003e\n\u003ctd\u003e-4-140°F (-20-60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptimal discharge temperature\u003c\/td\u003e\n\u003ctd\u003e59-95°F (15-35°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage (SoC \u0026gt;50%)\u003c\/td\u003e\n\u003ctd\u003e-4-113°F, max 6 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule footprint\u003c\/td\u003e\n\u003ctd\u003e26.5 in W x 6.7 in D (674 x 170 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax connections\u003c\/td\u003e\n\u003ctd\u003eUp to 16 modules per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eCANBus \/ RS485 (closed-loop with EG4 18kPV)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL9540, UL9540A, UL1973, UN38.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e12 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003e\u003ca href=\"\/products\/eg4-12kw-18kpv-hybrid-inverter\"\u003eEG4 18kPV All-in-One Hybrid Inverter (per inverter)\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eAC Output\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power\u003c\/td\u003e\n\u003ctd\u003e12,000W continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput voltage\u003c\/td\u003e\n\u003ctd\u003e120\/240Vac split-phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous output current\u003c\/td\u003e\n\u003ctd\u003e50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous line wattage\u003c\/td\u003e\n\u003ctd\u003e8,000W per 120V leg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge with PV\u003c\/td\u003e\n\u003ctd\u003e14,700W (10 min) \/ 15,500W (5 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge without PV\u003c\/td\u003e\n\u003ctd\u003e13,500W (10 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower factor\u003c\/td\u003e\n\u003ctd\u003e0.99 (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;5% (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransfer time\u003c\/td\u003e\n\u003ctd\u003e10-20ms (single) \/ 20ms (parallel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax parallel\u003c\/td\u003e\n\u003ctd\u003e10 units\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eAC Input\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrid input\u003c\/td\u003e\n\u003ctd\u003e120\/240Vac, 50\/60Hz, 180-270Vac\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC input power\u003c\/td\u003e\n\u003ctd\u003e12,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC bypass\u003c\/td\u003e\n\u003ctd\u003e200A (grid) \/ 90A (generator)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003ePV Input\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT trackers\u003c\/td\u003e\n\u003ctd\u003e3 (2 inputs on MPPT 1, 1 each on MPPT 2 and 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax PV array power\u003c\/td\u003e\n\u003ctd\u003e18,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax input current\u003c\/td\u003e\n\u003ctd\u003e25A (MPPT 1) \/ 15A (MPPT 2 and 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC input voltage range\u003c\/td\u003e\n\u003ctd\u003e100-600Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStart-up voltage\u003c\/td\u003e\n\u003ctd\u003e100Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT operating range\u003c\/td\u003e\n\u003ctd\u003e140-500Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax efficiency\u003c\/td\u003e\n\u003ctd\u003e94-99.9%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eBattery and General\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery voltage\u003c\/td\u003e\n\u003ctd\u003e48Vdc nominal, 40-60Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge \/ discharge current\u003c\/td\u003e\n\u003ctd\u003e250A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdle consumption\u003c\/td\u003e\n\u003ctd\u003e~70W normal \/ ~18W standby\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e-13 to 140°F (-25 to 60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAltitude\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;6,561 ft (2,000 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise\u003c\/td\u003e\n\u003ctd\u003e68dB at 3 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eRS485 \/ CANBus \/ Wi-Fi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e20.5 x 11.2 x 34.3 in (520 x 285 x 871 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e121 lb (55 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-downloads alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eAdditional Documentation\u003c\/span\u003e\u003ch2\u003eDocuments \u0026amp; Downloads\u003c\/h2\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ETHOS-SpecSheet-1.4-BatteryCB.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS Battery Spec Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS + EG4 ESS User Manual (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-UL9540A-Certificate-1.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UL9540A Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-UL1973-ETHOS.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UL1973 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-48V-ETHOS-DOC-UN38.3.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UN38.3 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-SDS_BigBattery_LFP-1.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e BigBattery LFP Safety Data Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Spec-Sheet.pdf?v=1789927253\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV Spec Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Manual-1.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV User Manual (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Certification.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV UL1741 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-RSD-Initiator-Install-Instructions-EG4-18kPV-Version-1-External.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV Rapid Shutdown Wiring Guide (PDF)\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003cdiv class=\"esk-footer\"\u003e\u003cp\u003e\u003cstrong\u003eFree shipping\u003c\/strong\u003e within the contiguous USA · \u003cstrong\u003e$0 sales tax\u003c\/strong\u003e in most states · Questions? Call \u003ca href=\"tel:+13073177213\"\u003e+1 307 317 7213\u003c\/a\u003e\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BigBattery","offers":[{"title":"Default Title","offer_id":50214628098103,"sku":"K0753","price":13087.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/41-kWh-x8-Batteries-KIT0753-V3.webp?v=1789927941"},{"product_id":"bigbattery-ethos-48v-46-08kwh-battery-1x-eg4-18kpv-12kw-hybrid-inverter-ess-k0754","title":"BigBattery ETHOS 48V 46.08kWh LiFePO4 Battery + 1 x EG4 18kPV Hybrid Inverter ESS | 12kW Output, 18kW PV | UL9540 Whole-Home Backup | K0754","description":"\u003cdiv class=\"esk-jk-pd\"\u003e\n\u003cdiv class=\"esk-hero\"\u003e\n\u003cp class=\"esk-eyebrow\"\u003eEnergy Storage System · 12kW · 46.08kWh · 18kW PV\u003c\/p\u003e\n\u003ch2\u003e46.08kWh of Stackable LiFePO4 Storage with 12kW of Hybrid Inverter Power\u003c\/h2\u003e\n\u003cp class=\"esk-lead\"\u003eA UL 9540 certified whole-home energy storage system: 9 stackable ETHOS 48V LiFePO4 modules (46.08kWh, 9 modules) matched with 1 EG4 18kPV hybrid inverter for 12kW of continuous 120\/240V split-phase output and up to 18kW of solar input.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-rays\"\u003e\u003csvg viewbox=\"0 0 700 22\" preserveaspectratio=\"none\"\u003e\u003cpath d=\"M0,11 L30,4 M40,11 L65,2 M75,11 L95,5 M110,11 L125,3 M140,11 L160,6\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003cpath d=\"M700,11 L670,4 M660,11 L635,2 M625,11 L605,5 M590,11 L575,3 M560,11 L540,6\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003ccircle cx=\"350\" cy=\"11\" r=\"9\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\u003e\u003c\/circle\u003e\u003cpath d=\"M300,11 L180,11 M420,11 L520,11\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\" opacity=\"0.55\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-stats\"\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e12kW\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eContinuous AC Output\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e46.08kWh\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eLiFePO4 Storage\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e18kW\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eMax Solar Input\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e12 Years\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eBattery Warranty\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-kit-K0754.webp?v=1789927252\u0026amp;width=1400\" alt=\"BigBattery ETHOS + EG4 18kPV energy storage system kit K0754 - 9 battery modules and 1 inverter(s)\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-overview\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eOverview\u003c\/span\u003e\u003ch2\u003eK0754 Overview\u003c\/h2\u003e\n\u003cp\u003eThe K0754 configuration of the BigBattery ETHOS + EG4 18kPV ESS combines 9 ETHOS 5.12kWh battery modules with 1 EG4 18kPV hybrid inverter. ETHOS modules stack on a rack base with a control box on top - no wall mounting, no rack cabinet - so 46.08kWh of storage installs in a footprint of 26.5 x 6.7 inches per stack. Every stack is IP65 \/ NEMA 4X rated and the batteries are UL1973, UL9540A and UN38.3 certified; together with the 18kPV the system is UL 9540 listed, which is what most utilities and inspectors now require for permitted home storage.\u003c\/p\u003e\n\u003cp\u003eEach EG4 18kPV supplies 12,000W of continuous 120\/240V split-phase power (15,500W surge with PV), accepts 18kW of solar on three MPPTs, and passes through 200A of grid power. It works on-grid with export or zero-export, off-grid, or as backup, and talks to the ETHOS control box in closed loop so charging current, state of charge and protection are coordinated automatically. A second and third inverter can be added later for 24kW or 36kW.\u003c\/p\u003e\n\u003cp\u003e46.08kWh is roughly 2.1 days of typical household consumption (22kWh\/day) without sun, and the ETHOS platform scales past 80kWh by adding modules to each control box (up to 16 per box). BigBattery ships from Texas with a 12-year battery warranty, a 10-year inverter warranty and lifetime US-based technical support. Solar panels and racking are not included - pair the system with any 100-600Vdc PV array up to 18kW.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/bigbattery-kits\" title=\"BigBattery Kits\"\u003eBigBattery backup systems\u003c\/a\u003e, \u003ca href=\"\/collections\/bigbattery-batteries\" title=\"BigBattery Batteries\"\u003eBigBattery lithium batteries\u003c\/a\u003e and \u003ca href=\"\/collections\/eg4-inverters\" title=\"EG4 Inverters\"\u003eEG4 inverters\u003c\/a\u003e.\u003c\/p\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-kit.webp?v=1789927251\u0026amp;width=1400\" alt=\"BigBattery ETHOS 48V 5.12kWh battery module - what is in the box\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-features alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eFeatures\u003c\/span\u003e\u003ch2\u003eK0754 Key Features\u003c\/h2\u003e\n\u003cdiv class=\"esk-feat-grid\"\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e01\u003c\/span\u003e\u003ch3\u003eUL 9540 certified ESS\u003c\/h3\u003e\n\u003cp\u003eETHOS battery and EG4 18kPV are certified together as a complete energy storage system, with UL9540A fire-safety testing, UL1973 and UN38.3 on the battery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e02\u003c\/span\u003e\u003ch3\u003e46.08kWh stackable LiFePO4\u003c\/h3\u003e\n\u003cp\u003e9 modules of 5.12kWh \/ 100Ah each, 6,000+ cycles, 16S cells and a smart BMS in every module; expand to 80+ kWh by adding modules.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e03\u003c\/span\u003e\u003ch3\u003e12kW hybrid power, 18kW solar\u003c\/h3\u003e\n\u003cp\u003eEG4 18kPV: 12kW per unit, three MPPTs, 100-600Vdc input, 200A pass-through, generator input, RSD support and Wi-Fi monitoring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e04\u003c\/span\u003e\u003ch3\u003eClosed-loop communication\u003c\/h3\u003e\n\u003cp\u003eCANBus link between control box and inverter for coordinated charging, accurate state of charge and protection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e05\u003c\/span\u003e\u003ch3\u003eIP65 \/ NEMA 4X\u003c\/h3\u003e\n\u003cp\u003eBattery stacks and inverter are weather rated for garages, covered patios and utility areas.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e06\u003c\/span\u003e\u003ch3\u003eFast, maintenance-free installation\u003c\/h3\u003e\n\u003cp\u003eStack, connect the included cables, and go - no routine servicing, 12-year battery and 10-year inverter warranties.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-install.jpg?v=1789927251\u0026amp;width=1400\" alt=\"Customer installation - EG4 hybrid inverter with stacked BigBattery ETHOS modules in a utility room\" width=\"1400\" height=\"1867\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-box\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eIncluded\u003c\/span\u003e\u003ch2\u003eWhat's in the Kit\u003c\/h2\u003e\n\u003cul class=\"esk-box-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e9×\u003c\/span\u003e\u003cspan\u003eBigBattery ETHOS 48V 5.12kWh stackable LiFePO4 battery module\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eETHOS control box\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e2×\u003c\/span\u003e\u003cspan\u003eETHOS rack base\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eEG4 18kPV all-in-one hybrid solar inverter (18kW PV \/ 12kW AC)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e4×\u003c\/span\u003e\u003cspan\u003eETHOS stack-to-stack power cable pair (4.9 ft)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e2×\u003c\/span\u003e\u003cspan\u003eETHOS stack-to-stack comm cable (4.9 ft)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003e15kWh ETHOS controller-to-battery cable\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e2×\u003c\/span\u003e\u003cspan\u003eETHOS battery top plate cover\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-inv-open.webp?v=1789927250\u0026amp;width=1400\" alt=\"EG4 18kPV hybrid inverter with wiring compartment open\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-runtime alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eRuntime\u003c\/span\u003e\u003ch2\u003eWhat 46.08kWh of storage can run\u003c\/h2\u003e\n\u003cp class=\"esk-note\"\u003eEstimates assume 85% usable energy and typical load ratings; actual runtime depends on your appliances, weather and settings.\u003c\/p\u003e\n\u003cdiv class=\"esk-run-grid\"\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~2.1 days\u003c\/span\u003e\u003cspan class=\"dev\"\u003eTypical home (22kWh\/day), no sun\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~15 hours\u003c\/span\u003e\u003cspan class=\"dev\"\u003eCentral AC 3-ton (3kW) continuous\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~46 hours\u003c\/span\u003e\u003cspan class=\"dev\"\u003eRefrigerator + freezer (1kW)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e12kW\u003c\/span\u003e\u003cspan class=\"dev\"\u003eContinuous output, whole-house loads\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-faqs\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eFAQ\u003c\/span\u003e\u003ch2\u003eK0754 Common Questions\u003c\/h2\u003e\n\u003cdiv class=\"esk-faq-grid\"\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ1\u003c\/span\u003e\u003ch3\u003eHow long will 46.08kWh power my home?\u003c\/h3\u003e\n\u003cp\u003eAbout 2.1 days for a typical 22kWh\/day home with no solar input; with solar panels connected to the 18kPV (up to 18kW) the batteries recharge daily.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ2\u003c\/span\u003e\u003ch3\u003eDoes the kit include solar panels?\u003c\/h3\u003e\n\u003cp\u003eNo. This is a battery + inverter ESS. Connect any PV array within the inverter limits (100-600Vdc, 18kW per inverter), or run it as grid-charged backup without solar.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ3\u003c\/span\u003e\u003ch3\u003eIs it grid-tied or off-grid?\u003c\/h3\u003e\n\u003cp\u003eBoth. The EG4 18kPV is UL1741 certified for grid interaction (export or zero-export) and also runs fully off-grid; it has a generator input as well.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ4\u003c\/span\u003e\u003ch3\u003eCan I add more batteries later?\u003c\/h3\u003e\n\u003cp\u003eYes. Each ETHOS control box supports up to 16 modules, and BigBattery sells single ETHOS modules, so the system can grow past 80kWh.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ5\u003c\/span\u003e\u003ch3\u003eDoes it ship free?\u003c\/h3\u003e\n\u003cp\u003eYes - free freight shipping within the contiguous USA, $0 sales tax in most states.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-specs alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eData\u003c\/span\u003e\u003ch2\u003eK0754 Specifications\u003c\/h2\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003eBigBattery ETHOS 48V 5.12kWh Stackable Battery Module (per module)\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eBattery\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem voltage\u003c\/td\u003e\n\u003ctd\u003e48V (51.2V nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry\u003c\/td\u003e\n\u003ctd\u003eLiFePO4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity per module\u003c\/td\u003e\n\u003ctd\u003e5.12kWh \/ 100Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCell configuration\u003c\/td\u003e\n\u003ctd\u003e16S per module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging voltage range\u003c\/td\u003e\n\u003ctd\u003e55.6-57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge voltage\u003c\/td\u003e\n\u003ctd\u003e57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating voltage range\u003c\/td\u003e\n\u003ctd\u003e48-57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuggested low-voltage cutoff\u003c\/td\u003e\n\u003ctd\u003e48-50.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMS cutoff range\u003c\/td\u003e\n\u003ctd\u003e42-47V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous discharge current\u003c\/td\u003e\n\u003ctd\u003e100A per module (200A per control box)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax discharge peak current\u003c\/td\u003e\n\u003ctd\u003e300A (max 5 seconds)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge current\u003c\/td\u003e\n\u003ctd\u003e200A per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCycle life\u003c\/td\u003e\n\u003ctd\u003e6,000+ cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eGeneral\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharge temperature\u003c\/td\u003e\n\u003ctd\u003e32-113°F (0-45°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarge temperature\u003c\/td\u003e\n\u003ctd\u003e-4-140°F (-20-60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptimal discharge temperature\u003c\/td\u003e\n\u003ctd\u003e59-95°F (15-35°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage (SoC \u0026gt;50%)\u003c\/td\u003e\n\u003ctd\u003e-4-113°F, max 6 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule footprint\u003c\/td\u003e\n\u003ctd\u003e26.5 in W x 6.7 in D (674 x 170 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax connections\u003c\/td\u003e\n\u003ctd\u003eUp to 16 modules per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eCANBus \/ RS485 (closed-loop with EG4 18kPV)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL9540, UL9540A, UL1973, UN38.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e12 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003e\u003ca href=\"\/products\/eg4-12kw-18kpv-hybrid-inverter\"\u003eEG4 18kPV All-in-One Hybrid Inverter (per inverter)\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eAC Output\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power\u003c\/td\u003e\n\u003ctd\u003e12,000W continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput voltage\u003c\/td\u003e\n\u003ctd\u003e120\/240Vac split-phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous output current\u003c\/td\u003e\n\u003ctd\u003e50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous line wattage\u003c\/td\u003e\n\u003ctd\u003e8,000W per 120V leg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge with PV\u003c\/td\u003e\n\u003ctd\u003e14,700W (10 min) \/ 15,500W (5 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge without PV\u003c\/td\u003e\n\u003ctd\u003e13,500W (10 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower factor\u003c\/td\u003e\n\u003ctd\u003e0.99 (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;5% (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransfer time\u003c\/td\u003e\n\u003ctd\u003e10-20ms (single) \/ 20ms (parallel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax parallel\u003c\/td\u003e\n\u003ctd\u003e10 units\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eAC Input\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrid input\u003c\/td\u003e\n\u003ctd\u003e120\/240Vac, 50\/60Hz, 180-270Vac\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC input power\u003c\/td\u003e\n\u003ctd\u003e12,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC bypass\u003c\/td\u003e\n\u003ctd\u003e200A (grid) \/ 90A (generator)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003ePV Input\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT trackers\u003c\/td\u003e\n\u003ctd\u003e3 (2 inputs on MPPT 1, 1 each on MPPT 2 and 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax PV array power\u003c\/td\u003e\n\u003ctd\u003e18,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax input current\u003c\/td\u003e\n\u003ctd\u003e25A (MPPT 1) \/ 15A (MPPT 2 and 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC input voltage range\u003c\/td\u003e\n\u003ctd\u003e100-600Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStart-up voltage\u003c\/td\u003e\n\u003ctd\u003e100Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT operating range\u003c\/td\u003e\n\u003ctd\u003e140-500Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax efficiency\u003c\/td\u003e\n\u003ctd\u003e94-99.9%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eBattery and General\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery voltage\u003c\/td\u003e\n\u003ctd\u003e48Vdc nominal, 40-60Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge \/ discharge current\u003c\/td\u003e\n\u003ctd\u003e250A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdle consumption\u003c\/td\u003e\n\u003ctd\u003e~70W normal \/ ~18W standby\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e-13 to 140°F (-25 to 60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAltitude\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;6,561 ft (2,000 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise\u003c\/td\u003e\n\u003ctd\u003e68dB at 3 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eRS485 \/ CANBus \/ Wi-Fi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e20.5 x 11.2 x 34.3 in (520 x 285 x 871 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e121 lb (55 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-downloads alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eAdditional Documentation\u003c\/span\u003e\u003ch2\u003eDocuments \u0026amp; Downloads\u003c\/h2\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ETHOS-SpecSheet-1.4-BatteryCB.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS Battery Spec Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS + EG4 ESS User Manual (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-UL9540A-Certificate-1.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UL9540A Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-UL1973-ETHOS.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UL1973 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-48V-ETHOS-DOC-UN38.3.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UN38.3 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-SDS_BigBattery_LFP-1.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e BigBattery LFP Safety Data Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Spec-Sheet.pdf?v=1789927253\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV Spec Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Manual-1.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV User Manual (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Certification.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV UL1741 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-RSD-Initiator-Install-Instructions-EG4-18kPV-Version-1-External.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV Rapid Shutdown Wiring Guide (PDF)\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003cdiv class=\"esk-footer\"\u003e\u003cp\u003e\u003cstrong\u003eFree shipping\u003c\/strong\u003e within the contiguous USA · \u003cstrong\u003e$0 sales tax\u003c\/strong\u003e in most states · Questions? Call \u003ca href=\"tel:+13073177213\"\u003e+1 307 317 7213\u003c\/a\u003e\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BigBattery","offers":[{"title":"Default Title","offer_id":50214628130871,"sku":"K0754","price":14150.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/46-kWh-x9-Batteries-KIT0754-V2.webp?v=1789927947"},{"product_id":"bigbattery-ethos-48v-40-96kwh-battery-2x-eg4-18kpv-24kw-hybrid-inverter-ess-k0960","title":"BigBattery ETHOS 48V 40.96kWh LiFePO4 Battery + 2 x EG4 18kPV Hybrid Inverter ESS | 24kW Output, 36kW PV | UL9540 Whole-Home Backup | K0960","description":"\u003cdiv class=\"esk-jk-pd\"\u003e\n\u003cdiv class=\"esk-hero\"\u003e\n\u003cp class=\"esk-eyebrow\"\u003eEnergy Storage System · 24kW · 40.96kWh · 36kW PV\u003c\/p\u003e\n\u003ch2\u003e40.96kWh of Stackable LiFePO4 Storage with 24kW of Hybrid Inverter Power\u003c\/h2\u003e\n\u003cp class=\"esk-lead\"\u003eA UL 9540 certified whole-home energy storage system: 8 stackable ETHOS 48V LiFePO4 modules (40.96kWh, 4 modules + 4 modules) matched with 2 EG4 18kPV hybrid inverters for 24kW of continuous 120\/240V split-phase output and up to 36kW of solar input.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-rays\"\u003e\u003csvg viewbox=\"0 0 700 22\" preserveaspectratio=\"none\"\u003e\u003cpath d=\"M0,11 L30,4 M40,11 L65,2 M75,11 L95,5 M110,11 L125,3 M140,11 L160,6\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003cpath d=\"M700,11 L670,4 M660,11 L635,2 M625,11 L605,5 M590,11 L575,3 M560,11 L540,6\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003ccircle cx=\"350\" cy=\"11\" r=\"9\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\u003e\u003c\/circle\u003e\u003cpath d=\"M300,11 L180,11 M420,11 L520,11\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\" opacity=\"0.55\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-stats\"\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e24kW\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eContinuous AC Output\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e40.96kWh\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eLiFePO4 Storage\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e36kW\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eMax Solar Input\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e12 Years\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eBattery Warranty\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-kit-K0960.webp?v=1789927252\u0026amp;width=1400\" alt=\"BigBattery ETHOS + EG4 18kPV energy storage system kit K0960 - 8 battery modules and 2 inverter(s)\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-overview\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eOverview\u003c\/span\u003e\u003ch2\u003eK0960 Overview\u003c\/h2\u003e\n\u003cp\u003eThe K0960 configuration of the BigBattery ETHOS + EG4 18kPV ESS combines 8 ETHOS 5.12kWh battery modules with 2 EG4 18kPV hybrid inverters. ETHOS modules stack on a rack base with a control box on top - no wall mounting, no rack cabinet - so 40.96kWh of storage installs in a footprint of 26.5 x 6.7 inches per stack. Every stack is IP65 \/ NEMA 4X rated and the batteries are UL1973, UL9540A and UN38.3 certified; together with the 18kPV the system is UL 9540 listed, which is what most utilities and inspectors now require for permitted home storage.\u003c\/p\u003e\n\u003cp\u003eEach EG4 18kPV supplies 12,000W of continuous 120\/240V split-phase power (15,500W surge with PV), accepts 18kW of solar on three MPPTs, and passes through 200A of grid power. It works on-grid with export or zero-export, off-grid, or as backup, and talks to the ETHOS control box in closed loop so charging current, state of charge and protection are coordinated automatically. With 2 inverters in parallel the system delivers 24kW continuous and up to 36kW of PV input.\u003c\/p\u003e\n\u003cp\u003e40.96kWh is roughly 1.9 days of typical household consumption (22kWh\/day) without sun, and the ETHOS platform scales past 80kWh by adding modules to each control box (up to 16 per box). BigBattery ships from Texas with a 12-year battery warranty, a 10-year inverter warranty and lifetime US-based technical support. Solar panels and racking are not included - pair the system with any 100-600Vdc PV array up to 36kW.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/bigbattery-kits\" title=\"BigBattery Kits\"\u003eBigBattery backup systems\u003c\/a\u003e, \u003ca href=\"\/collections\/bigbattery-batteries\" title=\"BigBattery Batteries\"\u003eBigBattery lithium batteries\u003c\/a\u003e and \u003ca href=\"\/collections\/eg4-inverters\" title=\"EG4 Inverters\"\u003eEG4 inverters\u003c\/a\u003e.\u003c\/p\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-kit.webp?v=1789927251\u0026amp;width=1400\" alt=\"BigBattery ETHOS 48V 5.12kWh battery module - what is in the box\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-features alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eFeatures\u003c\/span\u003e\u003ch2\u003eK0960 Key Features\u003c\/h2\u003e\n\u003cdiv class=\"esk-feat-grid\"\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e01\u003c\/span\u003e\u003ch3\u003eUL 9540 certified ESS\u003c\/h3\u003e\n\u003cp\u003eETHOS battery and EG4 18kPV are certified together as a complete energy storage system, with UL9540A fire-safety testing, UL1973 and UN38.3 on the battery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e02\u003c\/span\u003e\u003ch3\u003e40.96kWh stackable LiFePO4\u003c\/h3\u003e\n\u003cp\u003e8 modules of 5.12kWh \/ 100Ah each, 6,000+ cycles, 16S cells and a smart BMS in every module; expand to 80+ kWh by adding modules.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e03\u003c\/span\u003e\u003ch3\u003e24kW hybrid power, 36kW solar\u003c\/h3\u003e\n\u003cp\u003eEG4 18kPV: 12kW per unit, three MPPTs, 100-600Vdc input, 200A pass-through, generator input, RSD support and Wi-Fi monitoring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e04\u003c\/span\u003e\u003ch3\u003eClosed-loop communication\u003c\/h3\u003e\n\u003cp\u003eCANBus link between control box and inverter for coordinated charging, accurate state of charge and protection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e05\u003c\/span\u003e\u003ch3\u003eIP65 \/ NEMA 4X\u003c\/h3\u003e\n\u003cp\u003eBattery stacks and inverter are weather rated for garages, covered patios and utility areas.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e06\u003c\/span\u003e\u003ch3\u003eFast, maintenance-free installation\u003c\/h3\u003e\n\u003cp\u003eStack, connect the included cables, and go - no routine servicing, 12-year battery and 10-year inverter warranties.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-install.jpg?v=1789927251\u0026amp;width=1400\" alt=\"Customer installation - EG4 hybrid inverter with stacked BigBattery ETHOS modules in a utility room\" width=\"1400\" height=\"1867\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-box\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eIncluded\u003c\/span\u003e\u003ch2\u003eWhat's in the Kit\u003c\/h2\u003e\n\u003cul class=\"esk-box-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e8×\u003c\/span\u003e\u003cspan\u003eBigBattery ETHOS 48V 5.12kWh stackable LiFePO4 battery module\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e2×\u003c\/span\u003e\u003cspan\u003eETHOS control box\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e2×\u003c\/span\u003e\u003cspan\u003eETHOS rack base\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e2×\u003c\/span\u003e\u003cspan\u003eEG4 18kPV all-in-one hybrid solar inverter (18kW PV \/ 12kW AC)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eParallel busbar\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e4×\u003c\/span\u003e\u003cspan\u003eETHOS stack-to-stack power cable pair (4.9 ft)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e2×\u003c\/span\u003e\u003cspan\u003eETHOS stack-to-stack comm cable (4.9 ft)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-inv-open.webp?v=1789927250\u0026amp;width=1400\" alt=\"EG4 18kPV hybrid inverter with wiring compartment open\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-runtime alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eRuntime\u003c\/span\u003e\u003ch2\u003eWhat 40.96kWh of storage can run\u003c\/h2\u003e\n\u003cp class=\"esk-note\"\u003eEstimates assume 85% usable energy and typical load ratings; actual runtime depends on your appliances, weather and settings.\u003c\/p\u003e\n\u003cdiv class=\"esk-run-grid\"\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~1.9 days\u003c\/span\u003e\u003cspan class=\"dev\"\u003eTypical home (22kWh\/day), no sun\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~14 hours\u003c\/span\u003e\u003cspan class=\"dev\"\u003eCentral AC 3-ton (3kW) continuous\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~41 hours\u003c\/span\u003e\u003cspan class=\"dev\"\u003eRefrigerator + freezer (1kW)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e24kW\u003c\/span\u003e\u003cspan class=\"dev\"\u003eContinuous output, whole-house loads\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-faqs\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eFAQ\u003c\/span\u003e\u003ch2\u003eK0960 Common Questions\u003c\/h2\u003e\n\u003cdiv class=\"esk-faq-grid\"\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ1\u003c\/span\u003e\u003ch3\u003eHow long will 40.96kWh power my home?\u003c\/h3\u003e\n\u003cp\u003eAbout 1.9 days for a typical 22kWh\/day home with no solar input; with solar panels connected to the 18kPV (up to 36kW) the batteries recharge daily.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ2\u003c\/span\u003e\u003ch3\u003eDoes the kit include solar panels?\u003c\/h3\u003e\n\u003cp\u003eNo. This is a battery + inverter ESS. Connect any PV array within the inverter limits (100-600Vdc, 18kW per inverter), or run it as grid-charged backup without solar.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ3\u003c\/span\u003e\u003ch3\u003eIs it grid-tied or off-grid?\u003c\/h3\u003e\n\u003cp\u003eBoth. The EG4 18kPV is UL1741 certified for grid interaction (export or zero-export) and also runs fully off-grid; it has a generator input as well.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ4\u003c\/span\u003e\u003ch3\u003eCan I add more batteries later?\u003c\/h3\u003e\n\u003cp\u003eYes. Each ETHOS control box supports up to 16 modules, and BigBattery sells single ETHOS modules, so the system can grow past 80kWh.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ5\u003c\/span\u003e\u003ch3\u003eDoes it ship free?\u003c\/h3\u003e\n\u003cp\u003eYes - free freight shipping within the contiguous USA, $0 sales tax in most states.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-specs alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eData\u003c\/span\u003e\u003ch2\u003eK0960 Specifications\u003c\/h2\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003eBigBattery ETHOS 48V 5.12kWh Stackable Battery Module (per module)\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eBattery\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem voltage\u003c\/td\u003e\n\u003ctd\u003e48V (51.2V nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry\u003c\/td\u003e\n\u003ctd\u003eLiFePO4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity per module\u003c\/td\u003e\n\u003ctd\u003e5.12kWh \/ 100Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCell configuration\u003c\/td\u003e\n\u003ctd\u003e16S per module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging voltage range\u003c\/td\u003e\n\u003ctd\u003e55.6-57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge voltage\u003c\/td\u003e\n\u003ctd\u003e57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating voltage range\u003c\/td\u003e\n\u003ctd\u003e48-57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuggested low-voltage cutoff\u003c\/td\u003e\n\u003ctd\u003e48-50.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMS cutoff range\u003c\/td\u003e\n\u003ctd\u003e42-47V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous discharge current\u003c\/td\u003e\n\u003ctd\u003e100A per module (200A per control box)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax discharge peak current\u003c\/td\u003e\n\u003ctd\u003e300A (max 5 seconds)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge current\u003c\/td\u003e\n\u003ctd\u003e200A per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCycle life\u003c\/td\u003e\n\u003ctd\u003e6,000+ cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eGeneral\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharge temperature\u003c\/td\u003e\n\u003ctd\u003e32-113°F (0-45°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarge temperature\u003c\/td\u003e\n\u003ctd\u003e-4-140°F (-20-60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptimal discharge temperature\u003c\/td\u003e\n\u003ctd\u003e59-95°F (15-35°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage (SoC \u0026gt;50%)\u003c\/td\u003e\n\u003ctd\u003e-4-113°F, max 6 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule footprint\u003c\/td\u003e\n\u003ctd\u003e26.5 in W x 6.7 in D (674 x 170 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax connections\u003c\/td\u003e\n\u003ctd\u003eUp to 16 modules per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eCANBus \/ RS485 (closed-loop with EG4 18kPV)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL9540, UL9540A, UL1973, UN38.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e12 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003e\u003ca href=\"\/products\/eg4-12kw-18kpv-hybrid-inverter\"\u003eEG4 18kPV All-in-One Hybrid Inverter (per inverter)\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eAC Output\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power\u003c\/td\u003e\n\u003ctd\u003e12,000W continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput voltage\u003c\/td\u003e\n\u003ctd\u003e120\/240Vac split-phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous output current\u003c\/td\u003e\n\u003ctd\u003e50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous line wattage\u003c\/td\u003e\n\u003ctd\u003e8,000W per 120V leg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge with PV\u003c\/td\u003e\n\u003ctd\u003e14,700W (10 min) \/ 15,500W (5 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge without PV\u003c\/td\u003e\n\u003ctd\u003e13,500W (10 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower factor\u003c\/td\u003e\n\u003ctd\u003e0.99 (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;5% (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransfer time\u003c\/td\u003e\n\u003ctd\u003e10-20ms (single) \/ 20ms (parallel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax parallel\u003c\/td\u003e\n\u003ctd\u003e10 units\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eAC Input\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrid input\u003c\/td\u003e\n\u003ctd\u003e120\/240Vac, 50\/60Hz, 180-270Vac\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC input power\u003c\/td\u003e\n\u003ctd\u003e12,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC bypass\u003c\/td\u003e\n\u003ctd\u003e200A (grid) \/ 90A (generator)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003ePV Input\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT trackers\u003c\/td\u003e\n\u003ctd\u003e3 (2 inputs on MPPT 1, 1 each on MPPT 2 and 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax PV array power\u003c\/td\u003e\n\u003ctd\u003e18,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax input current\u003c\/td\u003e\n\u003ctd\u003e25A (MPPT 1) \/ 15A (MPPT 2 and 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC input voltage range\u003c\/td\u003e\n\u003ctd\u003e100-600Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStart-up voltage\u003c\/td\u003e\n\u003ctd\u003e100Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT operating range\u003c\/td\u003e\n\u003ctd\u003e140-500Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax efficiency\u003c\/td\u003e\n\u003ctd\u003e94-99.9%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eBattery and General\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery voltage\u003c\/td\u003e\n\u003ctd\u003e48Vdc nominal, 40-60Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge \/ discharge current\u003c\/td\u003e\n\u003ctd\u003e250A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdle consumption\u003c\/td\u003e\n\u003ctd\u003e~70W normal \/ ~18W standby\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e-13 to 140°F (-25 to 60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAltitude\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;6,561 ft (2,000 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise\u003c\/td\u003e\n\u003ctd\u003e68dB at 3 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eRS485 \/ CANBus \/ Wi-Fi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e20.5 x 11.2 x 34.3 in (520 x 285 x 871 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e121 lb (55 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-downloads alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eAdditional Documentation\u003c\/span\u003e\u003ch2\u003eDocuments \u0026amp; Downloads\u003c\/h2\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ETHOS-SpecSheet-1.4-BatteryCB.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS Battery Spec Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS + EG4 ESS User Manual (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-UL9540A-Certificate-1.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UL9540A Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-UL1973-ETHOS.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UL1973 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-48V-ETHOS-DOC-UN38.3.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UN38.3 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-SDS_BigBattery_LFP-1.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e BigBattery LFP Safety Data Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Spec-Sheet.pdf?v=1789927253\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV Spec Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Manual-1.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV User Manual (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Certification.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV UL1741 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-RSD-Initiator-Install-Instructions-EG4-18kPV-Version-1-External.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV Rapid Shutdown Wiring Guide (PDF)\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003cdiv class=\"esk-footer\"\u003e\u003cp\u003e\u003cstrong\u003eFree shipping\u003c\/strong\u003e within the contiguous USA · \u003cstrong\u003e$0 sales tax\u003c\/strong\u003e in most states · Questions? Call \u003ca href=\"tel:+13073177213\"\u003e+1 307 317 7213\u003c\/a\u003e\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BigBattery","offers":[{"title":"Default Title","offer_id":50214628163639,"sku":"K0960","price":17402.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/40-kWh-x8-Batteries-KIT0960-V2.webp?v=1789927953"},{"product_id":"bigbattery-ethos-48v-46-08kwh-battery-2x-eg4-18kpv-24kw-hybrid-inverter-ess-k0755","title":"BigBattery ETHOS 48V 46.08kWh LiFePO4 Battery + 2 x EG4 18kPV Hybrid Inverter ESS | 24kW Output, 36kW PV | UL9540 Whole-Home Backup | K0755","description":"\u003cdiv class=\"esk-jk-pd\"\u003e\n\u003cdiv class=\"esk-hero\"\u003e\n\u003cp class=\"esk-eyebrow\"\u003eEnergy Storage System · 24kW · 46.08kWh · 36kW PV\u003c\/p\u003e\n\u003ch2\u003e46.08kWh of Stackable LiFePO4 Storage with 24kW of Hybrid Inverter Power\u003c\/h2\u003e\n\u003cp class=\"esk-lead\"\u003eA UL 9540 certified whole-home energy storage system: 9 stackable ETHOS 48V LiFePO4 modules (46.08kWh, 5 modules + 4 modules) matched with 2 EG4 18kPV hybrid inverters for 24kW of continuous 120\/240V split-phase output and up to 36kW of solar input.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-rays\"\u003e\u003csvg viewbox=\"0 0 700 22\" preserveaspectratio=\"none\"\u003e\u003cpath d=\"M0,11 L30,4 M40,11 L65,2 M75,11 L95,5 M110,11 L125,3 M140,11 L160,6\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003cpath d=\"M700,11 L670,4 M660,11 L635,2 M625,11 L605,5 M590,11 L575,3 M560,11 L540,6\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003ccircle cx=\"350\" cy=\"11\" r=\"9\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\u003e\u003c\/circle\u003e\u003cpath d=\"M300,11 L180,11 M420,11 L520,11\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\" opacity=\"0.55\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-stats\"\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e24kW\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eContinuous AC Output\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e46.08kWh\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eLiFePO4 Storage\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e36kW\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eMax Solar Input\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e12 Years\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eBattery Warranty\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-kit-K0755.webp?v=1789927252\u0026amp;width=1400\" alt=\"BigBattery ETHOS + EG4 18kPV energy storage system kit K0755 - 9 battery modules and 2 inverter(s)\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-overview\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eOverview\u003c\/span\u003e\u003ch2\u003eK0755 Overview\u003c\/h2\u003e\n\u003cp\u003eThe K0755 configuration of the BigBattery ETHOS + EG4 18kPV ESS combines 9 ETHOS 5.12kWh battery modules with 2 EG4 18kPV hybrid inverters. ETHOS modules stack on a rack base with a control box on top - no wall mounting, no rack cabinet - so 46.08kWh of storage installs in a footprint of 26.5 x 6.7 inches per stack. Every stack is IP65 \/ NEMA 4X rated and the batteries are UL1973, UL9540A and UN38.3 certified; together with the 18kPV the system is UL 9540 listed, which is what most utilities and inspectors now require for permitted home storage.\u003c\/p\u003e\n\u003cp\u003eEach EG4 18kPV supplies 12,000W of continuous 120\/240V split-phase power (15,500W surge with PV), accepts 18kW of solar on three MPPTs, and passes through 200A of grid power. It works on-grid with export or zero-export, off-grid, or as backup, and talks to the ETHOS control box in closed loop so charging current, state of charge and protection are coordinated automatically. With 2 inverters in parallel the system delivers 24kW continuous and up to 36kW of PV input.\u003c\/p\u003e\n\u003cp\u003e46.08kWh is roughly 2.1 days of typical household consumption (22kWh\/day) without sun, and the ETHOS platform scales past 80kWh by adding modules to each control box (up to 16 per box). BigBattery ships from Texas with a 12-year battery warranty, a 10-year inverter warranty and lifetime US-based technical support. Solar panels and racking are not included - pair the system with any 100-600Vdc PV array up to 36kW.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/bigbattery-kits\" title=\"BigBattery Kits\"\u003eBigBattery backup systems\u003c\/a\u003e, \u003ca href=\"\/collections\/bigbattery-batteries\" title=\"BigBattery Batteries\"\u003eBigBattery lithium batteries\u003c\/a\u003e and \u003ca href=\"\/collections\/eg4-inverters\" title=\"EG4 Inverters\"\u003eEG4 inverters\u003c\/a\u003e.\u003c\/p\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-kit.webp?v=1789927251\u0026amp;width=1400\" alt=\"BigBattery ETHOS 48V 5.12kWh battery module - what is in the box\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-features alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eFeatures\u003c\/span\u003e\u003ch2\u003eK0755 Key Features\u003c\/h2\u003e\n\u003cdiv class=\"esk-feat-grid\"\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e01\u003c\/span\u003e\u003ch3\u003eUL 9540 certified ESS\u003c\/h3\u003e\n\u003cp\u003eETHOS battery and EG4 18kPV are certified together as a complete energy storage system, with UL9540A fire-safety testing, UL1973 and UN38.3 on the battery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e02\u003c\/span\u003e\u003ch3\u003e46.08kWh stackable LiFePO4\u003c\/h3\u003e\n\u003cp\u003e9 modules of 5.12kWh \/ 100Ah each, 6,000+ cycles, 16S cells and a smart BMS in every module; expand to 80+ kWh by adding modules.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e03\u003c\/span\u003e\u003ch3\u003e24kW hybrid power, 36kW solar\u003c\/h3\u003e\n\u003cp\u003eEG4 18kPV: 12kW per unit, three MPPTs, 100-600Vdc input, 200A pass-through, generator input, RSD support and Wi-Fi monitoring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e04\u003c\/span\u003e\u003ch3\u003eClosed-loop communication\u003c\/h3\u003e\n\u003cp\u003eCANBus link between control box and inverter for coordinated charging, accurate state of charge and protection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e05\u003c\/span\u003e\u003ch3\u003eIP65 \/ NEMA 4X\u003c\/h3\u003e\n\u003cp\u003eBattery stacks and inverter are weather rated for garages, covered patios and utility areas.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e06\u003c\/span\u003e\u003ch3\u003eFast, maintenance-free installation\u003c\/h3\u003e\n\u003cp\u003eStack, connect the included cables, and go - no routine servicing, 12-year battery and 10-year inverter warranties.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-install.jpg?v=1789927251\u0026amp;width=1400\" alt=\"Customer installation - EG4 hybrid inverter with stacked BigBattery ETHOS modules in a utility room\" width=\"1400\" height=\"1867\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-box\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eIncluded\u003c\/span\u003e\u003ch2\u003eWhat's in the Kit\u003c\/h2\u003e\n\u003cul class=\"esk-box-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e9×\u003c\/span\u003e\u003cspan\u003eBigBattery ETHOS 48V 5.12kWh stackable LiFePO4 battery module\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e2×\u003c\/span\u003e\u003cspan\u003eETHOS control box\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e2×\u003c\/span\u003e\u003cspan\u003eETHOS rack base\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e2×\u003c\/span\u003e\u003cspan\u003eEG4 18kPV all-in-one hybrid solar inverter (18kW PV \/ 12kW AC)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e2×\u003c\/span\u003e\u003cspan\u003eETHOS stack-to-stack comm cable (4.9 ft)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e4×\u003c\/span\u003e\u003cspan\u003eETHOS stack-to-stack power cable pair (4.9 ft)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eParallel busbar\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-inv-open.webp?v=1789927250\u0026amp;width=1400\" alt=\"EG4 18kPV hybrid inverter with wiring compartment open\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-runtime alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eRuntime\u003c\/span\u003e\u003ch2\u003eWhat 46.08kWh of storage can run\u003c\/h2\u003e\n\u003cp class=\"esk-note\"\u003eEstimates assume 85% usable energy and typical load ratings; actual runtime depends on your appliances, weather and settings.\u003c\/p\u003e\n\u003cdiv class=\"esk-run-grid\"\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~2.1 days\u003c\/span\u003e\u003cspan class=\"dev\"\u003eTypical home (22kWh\/day), no sun\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~15 hours\u003c\/span\u003e\u003cspan class=\"dev\"\u003eCentral AC 3-ton (3kW) continuous\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~46 hours\u003c\/span\u003e\u003cspan class=\"dev\"\u003eRefrigerator + freezer (1kW)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e24kW\u003c\/span\u003e\u003cspan class=\"dev\"\u003eContinuous output, whole-house loads\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-faqs\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eFAQ\u003c\/span\u003e\u003ch2\u003eK0755 Common Questions\u003c\/h2\u003e\n\u003cdiv class=\"esk-faq-grid\"\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ1\u003c\/span\u003e\u003ch3\u003eHow long will 46.08kWh power my home?\u003c\/h3\u003e\n\u003cp\u003eAbout 2.1 days for a typical 22kWh\/day home with no solar input; with solar panels connected to the 18kPV (up to 36kW) the batteries recharge daily.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ2\u003c\/span\u003e\u003ch3\u003eDoes the kit include solar panels?\u003c\/h3\u003e\n\u003cp\u003eNo. This is a battery + inverter ESS. Connect any PV array within the inverter limits (100-600Vdc, 18kW per inverter), or run it as grid-charged backup without solar.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ3\u003c\/span\u003e\u003ch3\u003eIs it grid-tied or off-grid?\u003c\/h3\u003e\n\u003cp\u003eBoth. The EG4 18kPV is UL1741 certified for grid interaction (export or zero-export) and also runs fully off-grid; it has a generator input as well.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ4\u003c\/span\u003e\u003ch3\u003eCan I add more batteries later?\u003c\/h3\u003e\n\u003cp\u003eYes. Each ETHOS control box supports up to 16 modules, and BigBattery sells single ETHOS modules, so the system can grow past 80kWh.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ5\u003c\/span\u003e\u003ch3\u003eDoes it ship free?\u003c\/h3\u003e\n\u003cp\u003eYes - free freight shipping within the contiguous USA, $0 sales tax in most states.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-specs alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eData\u003c\/span\u003e\u003ch2\u003eK0755 Specifications\u003c\/h2\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003eBigBattery ETHOS 48V 5.12kWh Stackable Battery Module (per module)\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eBattery\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem voltage\u003c\/td\u003e\n\u003ctd\u003e48V (51.2V nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry\u003c\/td\u003e\n\u003ctd\u003eLiFePO4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity per module\u003c\/td\u003e\n\u003ctd\u003e5.12kWh \/ 100Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCell configuration\u003c\/td\u003e\n\u003ctd\u003e16S per module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging voltage range\u003c\/td\u003e\n\u003ctd\u003e55.6-57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge voltage\u003c\/td\u003e\n\u003ctd\u003e57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating voltage range\u003c\/td\u003e\n\u003ctd\u003e48-57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuggested low-voltage cutoff\u003c\/td\u003e\n\u003ctd\u003e48-50.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMS cutoff range\u003c\/td\u003e\n\u003ctd\u003e42-47V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous discharge current\u003c\/td\u003e\n\u003ctd\u003e100A per module (200A per control box)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax discharge peak current\u003c\/td\u003e\n\u003ctd\u003e300A (max 5 seconds)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge current\u003c\/td\u003e\n\u003ctd\u003e200A per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCycle life\u003c\/td\u003e\n\u003ctd\u003e6,000+ cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eGeneral\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharge temperature\u003c\/td\u003e\n\u003ctd\u003e32-113°F (0-45°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarge temperature\u003c\/td\u003e\n\u003ctd\u003e-4-140°F (-20-60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptimal discharge temperature\u003c\/td\u003e\n\u003ctd\u003e59-95°F (15-35°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage (SoC \u0026gt;50%)\u003c\/td\u003e\n\u003ctd\u003e-4-113°F, max 6 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule footprint\u003c\/td\u003e\n\u003ctd\u003e26.5 in W x 6.7 in D (674 x 170 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax connections\u003c\/td\u003e\n\u003ctd\u003eUp to 16 modules per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eCANBus \/ RS485 (closed-loop with EG4 18kPV)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL9540, UL9540A, UL1973, UN38.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e12 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003e\u003ca href=\"\/products\/eg4-12kw-18kpv-hybrid-inverter\"\u003eEG4 18kPV All-in-One Hybrid Inverter (per inverter)\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eAC Output\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power\u003c\/td\u003e\n\u003ctd\u003e12,000W continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput voltage\u003c\/td\u003e\n\u003ctd\u003e120\/240Vac split-phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous output current\u003c\/td\u003e\n\u003ctd\u003e50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous line wattage\u003c\/td\u003e\n\u003ctd\u003e8,000W per 120V leg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge with PV\u003c\/td\u003e\n\u003ctd\u003e14,700W (10 min) \/ 15,500W (5 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge without PV\u003c\/td\u003e\n\u003ctd\u003e13,500W (10 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower factor\u003c\/td\u003e\n\u003ctd\u003e0.99 (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;5% (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransfer time\u003c\/td\u003e\n\u003ctd\u003e10-20ms (single) \/ 20ms (parallel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax parallel\u003c\/td\u003e\n\u003ctd\u003e10 units\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eAC Input\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrid input\u003c\/td\u003e\n\u003ctd\u003e120\/240Vac, 50\/60Hz, 180-270Vac\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC input power\u003c\/td\u003e\n\u003ctd\u003e12,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC bypass\u003c\/td\u003e\n\u003ctd\u003e200A (grid) \/ 90A (generator)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003ePV Input\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT trackers\u003c\/td\u003e\n\u003ctd\u003e3 (2 inputs on MPPT 1, 1 each on MPPT 2 and 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax PV array power\u003c\/td\u003e\n\u003ctd\u003e18,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax input current\u003c\/td\u003e\n\u003ctd\u003e25A (MPPT 1) \/ 15A (MPPT 2 and 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC input voltage range\u003c\/td\u003e\n\u003ctd\u003e100-600Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStart-up voltage\u003c\/td\u003e\n\u003ctd\u003e100Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT operating range\u003c\/td\u003e\n\u003ctd\u003e140-500Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax efficiency\u003c\/td\u003e\n\u003ctd\u003e94-99.9%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eBattery and General\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery voltage\u003c\/td\u003e\n\u003ctd\u003e48Vdc nominal, 40-60Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge \/ discharge current\u003c\/td\u003e\n\u003ctd\u003e250A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdle consumption\u003c\/td\u003e\n\u003ctd\u003e~70W normal \/ ~18W standby\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e-13 to 140°F (-25 to 60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAltitude\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;6,561 ft (2,000 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise\u003c\/td\u003e\n\u003ctd\u003e68dB at 3 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eRS485 \/ CANBus \/ Wi-Fi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e20.5 x 11.2 x 34.3 in (520 x 285 x 871 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e121 lb (55 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-downloads alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eAdditional Documentation\u003c\/span\u003e\u003ch2\u003eDocuments \u0026amp; Downloads\u003c\/h2\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ETHOS-SpecSheet-1.4-BatteryCB.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS Battery Spec Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS + EG4 ESS User Manual (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-UL9540A-Certificate-1.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UL9540A Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-UL1973-ETHOS.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UL1973 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-48V-ETHOS-DOC-UN38.3.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UN38.3 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-SDS_BigBattery_LFP-1.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e BigBattery LFP Safety Data Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Spec-Sheet.pdf?v=1789927253\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV Spec Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Manual-1.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV User Manual (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Certification.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV UL1741 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-RSD-Initiator-Install-Instructions-EG4-18kPV-Version-1-External.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV Rapid Shutdown Wiring Guide (PDF)\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003cdiv class=\"esk-footer\"\u003e\u003cp\u003e\u003cstrong\u003eFree shipping\u003c\/strong\u003e within the contiguous USA · \u003cstrong\u003e$0 sales tax\u003c\/strong\u003e in most states · Questions? Call \u003ca href=\"tel:+13073177213\"\u003e+1 307 317 7213\u003c\/a\u003e\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BigBattery","offers":[{"title":"Default Title","offer_id":50214628196407,"sku":"K0755","price":18465.48,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/46-kWh-x9-Batteries-KIT0755-V2.webp?v=1789927959"},{"product_id":"bigbattery-ethos-48v-61-44kwh-battery-2x-eg4-18kpv-24kw-hybrid-inverter-ess-k0961","title":"BigBattery ETHOS 48V 61.44kWh LiFePO4 Battery + 2 x EG4 18kPV Hybrid Inverter ESS | 24kW Output, 36kW PV | UL9540 Whole-Home Backup | K0961","description":"\u003cdiv class=\"esk-jk-pd\"\u003e\n\u003cdiv class=\"esk-hero\"\u003e\n\u003cp class=\"esk-eyebrow\"\u003eEnergy Storage System · 24kW · 61.44kWh · 36kW PV\u003c\/p\u003e\n\u003ch2\u003e61.44kWh of Stackable LiFePO4 Storage with 24kW of Hybrid Inverter Power\u003c\/h2\u003e\n\u003cp class=\"esk-lead\"\u003eA UL 9540 certified whole-home energy storage system: 12 stackable ETHOS 48V LiFePO4 modules (61.44kWh, 6 modules + 6 modules) matched with 2 EG4 18kPV hybrid inverters for 24kW of continuous 120\/240V split-phase output and up to 36kW of solar input.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-rays\"\u003e\u003csvg viewbox=\"0 0 700 22\" preserveaspectratio=\"none\"\u003e\u003cpath d=\"M0,11 L30,4 M40,11 L65,2 M75,11 L95,5 M110,11 L125,3 M140,11 L160,6\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003cpath d=\"M700,11 L670,4 M660,11 L635,2 M625,11 L605,5 M590,11 L575,3 M560,11 L540,6\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003ccircle cx=\"350\" cy=\"11\" r=\"9\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\u003e\u003c\/circle\u003e\u003cpath d=\"M300,11 L180,11 M420,11 L520,11\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\" opacity=\"0.55\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-stats\"\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e24kW\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eContinuous AC Output\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e61.44kWh\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eLiFePO4 Storage\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e36kW\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eMax Solar Input\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e12 Years\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eBattery Warranty\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-kit-K0961.webp?v=1789927251\u0026amp;width=1400\" alt=\"BigBattery ETHOS + EG4 18kPV energy storage system kit K0961 - 12 battery modules and 2 inverter(s)\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-overview\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eOverview\u003c\/span\u003e\u003ch2\u003eK0961 Overview\u003c\/h2\u003e\n\u003cp\u003eThe K0961 configuration of the BigBattery ETHOS + EG4 18kPV ESS combines 12 ETHOS 5.12kWh battery modules with 2 EG4 18kPV hybrid inverters. ETHOS modules stack on a rack base with a control box on top - no wall mounting, no rack cabinet - so 61.44kWh of storage installs in a footprint of 26.5 x 6.7 inches per stack. Every stack is IP65 \/ NEMA 4X rated and the batteries are UL1973, UL9540A and UN38.3 certified; together with the 18kPV the system is UL 9540 listed, which is what most utilities and inspectors now require for permitted home storage.\u003c\/p\u003e\n\u003cp\u003eEach EG4 18kPV supplies 12,000W of continuous 120\/240V split-phase power (15,500W surge with PV), accepts 18kW of solar on three MPPTs, and passes through 200A of grid power. It works on-grid with export or zero-export, off-grid, or as backup, and talks to the ETHOS control box in closed loop so charging current, state of charge and protection are coordinated automatically. With 2 inverters in parallel the system delivers 24kW continuous and up to 36kW of PV input.\u003c\/p\u003e\n\u003cp\u003e61.44kWh is roughly 2.8 days of typical household consumption (22kWh\/day) without sun, and the ETHOS platform scales past 80kWh by adding modules to each control box (up to 16 per box). BigBattery ships from Texas with a 12-year battery warranty, a 10-year inverter warranty and lifetime US-based technical support. Solar panels and racking are not included - pair the system with any 100-600Vdc PV array up to 36kW.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/bigbattery-kits\" title=\"BigBattery Kits\"\u003eBigBattery backup systems\u003c\/a\u003e, \u003ca href=\"\/collections\/bigbattery-batteries\" title=\"BigBattery Batteries\"\u003eBigBattery lithium batteries\u003c\/a\u003e and \u003ca href=\"\/collections\/eg4-inverters\" title=\"EG4 Inverters\"\u003eEG4 inverters\u003c\/a\u003e.\u003c\/p\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-kit.webp?v=1789927251\u0026amp;width=1400\" alt=\"BigBattery ETHOS 48V 5.12kWh battery module - what is in the box\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-features alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eFeatures\u003c\/span\u003e\u003ch2\u003eK0961 Key Features\u003c\/h2\u003e\n\u003cdiv class=\"esk-feat-grid\"\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e01\u003c\/span\u003e\u003ch3\u003eUL 9540 certified ESS\u003c\/h3\u003e\n\u003cp\u003eETHOS battery and EG4 18kPV are certified together as a complete energy storage system, with UL9540A fire-safety testing, UL1973 and UN38.3 on the battery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e02\u003c\/span\u003e\u003ch3\u003e61.44kWh stackable LiFePO4\u003c\/h3\u003e\n\u003cp\u003e12 modules of 5.12kWh \/ 100Ah each, 6,000+ cycles, 16S cells and a smart BMS in every module; expand to 80+ kWh by adding modules.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e03\u003c\/span\u003e\u003ch3\u003e24kW hybrid power, 36kW solar\u003c\/h3\u003e\n\u003cp\u003eEG4 18kPV: 12kW per unit, three MPPTs, 100-600Vdc input, 200A pass-through, generator input, RSD support and Wi-Fi monitoring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e04\u003c\/span\u003e\u003ch3\u003eClosed-loop communication\u003c\/h3\u003e\n\u003cp\u003eCANBus link between control box and inverter for coordinated charging, accurate state of charge and protection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e05\u003c\/span\u003e\u003ch3\u003eIP65 \/ NEMA 4X\u003c\/h3\u003e\n\u003cp\u003eBattery stacks and inverter are weather rated for garages, covered patios and utility areas.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e06\u003c\/span\u003e\u003ch3\u003eFast, maintenance-free installation\u003c\/h3\u003e\n\u003cp\u003eStack, connect the included cables, and go - no routine servicing, 12-year battery and 10-year inverter warranties.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-install.jpg?v=1789927251\u0026amp;width=1400\" alt=\"Customer installation - EG4 hybrid inverter with stacked BigBattery ETHOS modules in a utility room\" width=\"1400\" height=\"1867\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-box\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eIncluded\u003c\/span\u003e\u003ch2\u003eWhat's in the Kit\u003c\/h2\u003e\n\u003cul class=\"esk-box-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e12×\u003c\/span\u003e\u003cspan\u003eBigBattery ETHOS 48V 5.12kWh stackable LiFePO4 battery module\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e2×\u003c\/span\u003e\u003cspan\u003eETHOS control box\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e2×\u003c\/span\u003e\u003cspan\u003eETHOS rack base\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e4×\u003c\/span\u003e\u003cspan\u003eETHOS stack-to-stack power cable pair (4.9 ft)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e2×\u003c\/span\u003e\u003cspan\u003eETHOS stack-to-stack comm cable (4.9 ft)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e2×\u003c\/span\u003e\u003cspan\u003eEG4 18kPV all-in-one hybrid solar inverter (18kW PV \/ 12kW AC)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eParallel busbar\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e2×\u003c\/span\u003e\u003cspan\u003eETHOS battery top plate cover\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-inv-open.webp?v=1789927250\u0026amp;width=1400\" alt=\"EG4 18kPV hybrid inverter with wiring compartment open\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-runtime alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eRuntime\u003c\/span\u003e\u003ch2\u003eWhat 61.44kWh of storage can run\u003c\/h2\u003e\n\u003cp class=\"esk-note\"\u003eEstimates assume 85% usable energy and typical load ratings; actual runtime depends on your appliances, weather and settings.\u003c\/p\u003e\n\u003cdiv class=\"esk-run-grid\"\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~2.8 days\u003c\/span\u003e\u003cspan class=\"dev\"\u003eTypical home (22kWh\/day), no sun\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~20 hours\u003c\/span\u003e\u003cspan class=\"dev\"\u003eCentral AC 3-ton (3kW) continuous\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~61 hours\u003c\/span\u003e\u003cspan class=\"dev\"\u003eRefrigerator + freezer (1kW)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e24kW\u003c\/span\u003e\u003cspan class=\"dev\"\u003eContinuous output, whole-house loads\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-faqs\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eFAQ\u003c\/span\u003e\u003ch2\u003eK0961 Common Questions\u003c\/h2\u003e\n\u003cdiv class=\"esk-faq-grid\"\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ1\u003c\/span\u003e\u003ch3\u003eHow long will 61.44kWh power my home?\u003c\/h3\u003e\n\u003cp\u003eAbout 2.8 days for a typical 22kWh\/day home with no solar input; with solar panels connected to the 18kPV (up to 36kW) the batteries recharge daily.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ2\u003c\/span\u003e\u003ch3\u003eDoes the kit include solar panels?\u003c\/h3\u003e\n\u003cp\u003eNo. This is a battery + inverter ESS. Connect any PV array within the inverter limits (100-600Vdc, 18kW per inverter), or run it as grid-charged backup without solar.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ3\u003c\/span\u003e\u003ch3\u003eIs it grid-tied or off-grid?\u003c\/h3\u003e\n\u003cp\u003eBoth. The EG4 18kPV is UL1741 certified for grid interaction (export or zero-export) and also runs fully off-grid; it has a generator input as well.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ4\u003c\/span\u003e\u003ch3\u003eCan I add more batteries later?\u003c\/h3\u003e\n\u003cp\u003eYes. Each ETHOS control box supports up to 16 modules, and BigBattery sells single ETHOS modules, so the system can grow past 80kWh.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ5\u003c\/span\u003e\u003ch3\u003eDoes it ship free?\u003c\/h3\u003e\n\u003cp\u003eYes - free freight shipping within the contiguous USA, $0 sales tax in most states.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-specs alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eData\u003c\/span\u003e\u003ch2\u003eK0961 Specifications\u003c\/h2\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003eBigBattery ETHOS 48V 5.12kWh Stackable Battery Module (per module)\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eBattery\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem voltage\u003c\/td\u003e\n\u003ctd\u003e48V (51.2V nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry\u003c\/td\u003e\n\u003ctd\u003eLiFePO4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity per module\u003c\/td\u003e\n\u003ctd\u003e5.12kWh \/ 100Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCell configuration\u003c\/td\u003e\n\u003ctd\u003e16S per module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging voltage range\u003c\/td\u003e\n\u003ctd\u003e55.6-57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge voltage\u003c\/td\u003e\n\u003ctd\u003e57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating voltage range\u003c\/td\u003e\n\u003ctd\u003e48-57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuggested low-voltage cutoff\u003c\/td\u003e\n\u003ctd\u003e48-50.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMS cutoff range\u003c\/td\u003e\n\u003ctd\u003e42-47V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous discharge current\u003c\/td\u003e\n\u003ctd\u003e100A per module (200A per control box)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax discharge peak current\u003c\/td\u003e\n\u003ctd\u003e300A (max 5 seconds)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge current\u003c\/td\u003e\n\u003ctd\u003e200A per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCycle life\u003c\/td\u003e\n\u003ctd\u003e6,000+ cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eGeneral\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharge temperature\u003c\/td\u003e\n\u003ctd\u003e32-113°F (0-45°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarge temperature\u003c\/td\u003e\n\u003ctd\u003e-4-140°F (-20-60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptimal discharge temperature\u003c\/td\u003e\n\u003ctd\u003e59-95°F (15-35°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage (SoC \u0026gt;50%)\u003c\/td\u003e\n\u003ctd\u003e-4-113°F, max 6 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule footprint\u003c\/td\u003e\n\u003ctd\u003e26.5 in W x 6.7 in D (674 x 170 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax connections\u003c\/td\u003e\n\u003ctd\u003eUp to 16 modules per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eCANBus \/ RS485 (closed-loop with EG4 18kPV)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL9540, UL9540A, UL1973, UN38.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e12 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003e\u003ca href=\"\/products\/eg4-12kw-18kpv-hybrid-inverter\"\u003eEG4 18kPV All-in-One Hybrid Inverter (per inverter)\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eAC Output\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power\u003c\/td\u003e\n\u003ctd\u003e12,000W continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput voltage\u003c\/td\u003e\n\u003ctd\u003e120\/240Vac split-phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous output current\u003c\/td\u003e\n\u003ctd\u003e50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous line wattage\u003c\/td\u003e\n\u003ctd\u003e8,000W per 120V leg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge with PV\u003c\/td\u003e\n\u003ctd\u003e14,700W (10 min) \/ 15,500W (5 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge without PV\u003c\/td\u003e\n\u003ctd\u003e13,500W (10 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower factor\u003c\/td\u003e\n\u003ctd\u003e0.99 (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;5% (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransfer time\u003c\/td\u003e\n\u003ctd\u003e10-20ms (single) \/ 20ms (parallel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax parallel\u003c\/td\u003e\n\u003ctd\u003e10 units\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eAC Input\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrid input\u003c\/td\u003e\n\u003ctd\u003e120\/240Vac, 50\/60Hz, 180-270Vac\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC input power\u003c\/td\u003e\n\u003ctd\u003e12,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC bypass\u003c\/td\u003e\n\u003ctd\u003e200A (grid) \/ 90A (generator)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003ePV Input\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT trackers\u003c\/td\u003e\n\u003ctd\u003e3 (2 inputs on MPPT 1, 1 each on MPPT 2 and 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax PV array power\u003c\/td\u003e\n\u003ctd\u003e18,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax input current\u003c\/td\u003e\n\u003ctd\u003e25A (MPPT 1) \/ 15A (MPPT 2 and 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC input voltage range\u003c\/td\u003e\n\u003ctd\u003e100-600Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStart-up voltage\u003c\/td\u003e\n\u003ctd\u003e100Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT operating range\u003c\/td\u003e\n\u003ctd\u003e140-500Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax efficiency\u003c\/td\u003e\n\u003ctd\u003e94-99.9%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eBattery and General\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery voltage\u003c\/td\u003e\n\u003ctd\u003e48Vdc nominal, 40-60Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge \/ discharge current\u003c\/td\u003e\n\u003ctd\u003e250A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdle consumption\u003c\/td\u003e\n\u003ctd\u003e~70W normal \/ ~18W standby\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e-13 to 140°F (-25 to 60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAltitude\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;6,561 ft (2,000 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise\u003c\/td\u003e\n\u003ctd\u003e68dB at 3 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eRS485 \/ CANBus \/ Wi-Fi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e20.5 x 11.2 x 34.3 in (520 x 285 x 871 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e121 lb (55 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-downloads alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eAdditional Documentation\u003c\/span\u003e\u003ch2\u003eDocuments \u0026amp; Downloads\u003c\/h2\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ETHOS-SpecSheet-1.4-BatteryCB.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS Battery Spec Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS + EG4 ESS User Manual (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-UL9540A-Certificate-1.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UL9540A Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-UL1973-ETHOS.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UL1973 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-48V-ETHOS-DOC-UN38.3.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UN38.3 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-SDS_BigBattery_LFP-1.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e BigBattery LFP Safety Data Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Spec-Sheet.pdf?v=1789927253\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV Spec Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Manual-1.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV User Manual (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Certification.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV UL1741 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-RSD-Initiator-Install-Instructions-EG4-18kPV-Version-1-External.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV Rapid Shutdown Wiring Guide (PDF)\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003cdiv class=\"esk-footer\"\u003e\u003cp\u003e\u003cstrong\u003eFree shipping\u003c\/strong\u003e within the contiguous USA · \u003cstrong\u003e$0 sales tax\u003c\/strong\u003e in most states · Questions? Call \u003ca href=\"tel:+13073177213\"\u003e+1 307 317 7213\u003c\/a\u003e\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BigBattery","offers":[{"title":"Default Title","offer_id":50214628229175,"sku":"K0961","price":21344.98,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/60-kWh-x12-Batteries-KIT0961-V2.webp?v=1789927965"},{"product_id":"bigbattery-ethos-48v-46-08kwh-battery-3x-eg4-18kpv-36kw-hybrid-inverter-ess-k0966","title":"BigBattery ETHOS 48V 46.08kWh LiFePO4 Battery + 3 x EG4 18kPV Hybrid Inverter ESS | 36kW Output, 54kW PV | UL9540 Whole-Home Backup | K0966","description":"\u003cdiv class=\"esk-jk-pd\"\u003e\n\u003cdiv class=\"esk-hero\"\u003e\n\u003cp class=\"esk-eyebrow\"\u003eEnergy Storage System · 36kW · 46.08kWh · 54kW PV\u003c\/p\u003e\n\u003ch2\u003e46.08kWh of Stackable LiFePO4 Storage with 36kW of Hybrid Inverter Power\u003c\/h2\u003e\n\u003cp class=\"esk-lead\"\u003eA UL 9540 certified whole-home energy storage system: 9 stackable ETHOS 48V LiFePO4 modules (46.08kWh, 3 modules + 3 modules + 3 modules) matched with 3 EG4 18kPV hybrid inverters for 36kW of continuous three-phase 120\/208V capable output and up to 54kW of solar input.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-rays\"\u003e\u003csvg viewbox=\"0 0 700 22\" preserveaspectratio=\"none\"\u003e\u003cpath d=\"M0,11 L30,4 M40,11 L65,2 M75,11 L95,5 M110,11 L125,3 M140,11 L160,6\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003cpath d=\"M700,11 L670,4 M660,11 L635,2 M625,11 L605,5 M590,11 L575,3 M560,11 L540,6\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003ccircle cx=\"350\" cy=\"11\" r=\"9\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\u003e\u003c\/circle\u003e\u003cpath d=\"M300,11 L180,11 M420,11 L520,11\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\" opacity=\"0.55\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-stats\"\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e36kW\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eContinuous AC Output\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e46.08kWh\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eLiFePO4 Storage\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e54kW\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eMax Solar Input\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e12 Years\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eBattery Warranty\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-kit-K0966.webp?v=1789927252\u0026amp;width=1400\" alt=\"BigBattery ETHOS + EG4 18kPV energy storage system kit K0966 - 9 battery modules and 3 inverter(s)\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-overview\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eOverview\u003c\/span\u003e\u003ch2\u003eK0966 Overview\u003c\/h2\u003e\n\u003cp\u003eThe K0966 configuration of the BigBattery ETHOS + EG4 18kPV ESS combines 9 ETHOS 5.12kWh battery modules with 3 EG4 18kPV hybrid inverters. ETHOS modules stack on a rack base with a control box on top - no wall mounting, no rack cabinet - so 46.08kWh of storage installs in a footprint of 26.5 x 6.7 inches per stack. Every stack is IP65 \/ NEMA 4X rated and the batteries are UL1973, UL9540A and UN38.3 certified; together with the 18kPV the system is UL 9540 listed, which is what most utilities and inspectors now require for permitted home storage.\u003c\/p\u003e\n\u003cp\u003eEach EG4 18kPV supplies 12,000W of continuous 120\/240V split-phase power (15,500W surge with PV), accepts 18kW of solar on three MPPTs, and passes through 200A of grid power. It works on-grid with export or zero-export, off-grid, or as backup, and talks to the ETHOS control box in closed loop so charging current, state of charge and protection are coordinated automatically. With 3 inverters in parallel the system delivers 36kW continuous and up to 54kW of PV input and can be configured for 120\/208V three-phase output.\u003c\/p\u003e\n\u003cp\u003e46.08kWh is roughly 2.1 days of typical household consumption (22kWh\/day) without sun, and the ETHOS platform scales past 80kWh by adding modules to each control box (up to 16 per box). BigBattery ships from Texas with a 12-year battery warranty, a 10-year inverter warranty and lifetime US-based technical support. Solar panels and racking are not included - pair the system with any 100-600Vdc PV array up to 54kW.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/bigbattery-kits\" title=\"BigBattery Kits\"\u003eBigBattery backup systems\u003c\/a\u003e, \u003ca href=\"\/collections\/bigbattery-batteries\" title=\"BigBattery Batteries\"\u003eBigBattery lithium batteries\u003c\/a\u003e and \u003ca href=\"\/collections\/eg4-inverters\" title=\"EG4 Inverters\"\u003eEG4 inverters\u003c\/a\u003e.\u003c\/p\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-kit.webp?v=1789927251\u0026amp;width=1400\" alt=\"BigBattery ETHOS 48V 5.12kWh battery module - what is in the box\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-features alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eFeatures\u003c\/span\u003e\u003ch2\u003eK0966 Key Features\u003c\/h2\u003e\n\u003cdiv class=\"esk-feat-grid\"\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e01\u003c\/span\u003e\u003ch3\u003eUL 9540 certified ESS\u003c\/h3\u003e\n\u003cp\u003eETHOS battery and EG4 18kPV are certified together as a complete energy storage system, with UL9540A fire-safety testing, UL1973 and UN38.3 on the battery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e02\u003c\/span\u003e\u003ch3\u003e46.08kWh stackable LiFePO4\u003c\/h3\u003e\n\u003cp\u003e9 modules of 5.12kWh \/ 100Ah each, 6,000+ cycles, 16S cells and a smart BMS in every module; expand to 80+ kWh by adding modules.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e03\u003c\/span\u003e\u003ch3\u003e36kW hybrid power, 54kW solar\u003c\/h3\u003e\n\u003cp\u003eEG4 18kPV: 12kW per unit, three MPPTs, 100-600Vdc input, 200A pass-through, generator input, RSD support and Wi-Fi monitoring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e04\u003c\/span\u003e\u003ch3\u003eClosed-loop communication\u003c\/h3\u003e\n\u003cp\u003eCANBus link between control box and inverter for coordinated charging, accurate state of charge and protection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e05\u003c\/span\u003e\u003ch3\u003eIP65 \/ NEMA 4X\u003c\/h3\u003e\n\u003cp\u003eBattery stacks and inverter are weather rated for garages, covered patios and utility areas.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e06\u003c\/span\u003e\u003ch3\u003eFast, maintenance-free installation\u003c\/h3\u003e\n\u003cp\u003eStack, connect the included cables, and go - no routine servicing, 12-year battery and 10-year inverter warranties.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-install.jpg?v=1789927251\u0026amp;width=1400\" alt=\"Customer installation - EG4 hybrid inverter with stacked BigBattery ETHOS modules in a utility room\" width=\"1400\" height=\"1867\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-box\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eIncluded\u003c\/span\u003e\u003ch2\u003eWhat's in the Kit\u003c\/h2\u003e\n\u003cul class=\"esk-box-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e9×\u003c\/span\u003e\u003cspan\u003eBigBattery ETHOS 48V 5.12kWh stackable LiFePO4 battery module\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e3×\u003c\/span\u003e\u003cspan\u003eETHOS control box\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e3×\u003c\/span\u003e\u003cspan\u003eEG4 18kPV all-in-one hybrid solar inverter (18kW PV \/ 12kW AC)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e3×\u003c\/span\u003e\u003cspan\u003e15kWh ETHOS controller-to-battery cable\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eParallel busbar\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-inv-open.webp?v=1789927250\u0026amp;width=1400\" alt=\"EG4 18kPV hybrid inverter with wiring compartment open\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-runtime alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eRuntime\u003c\/span\u003e\u003ch2\u003eWhat 46.08kWh of storage can run\u003c\/h2\u003e\n\u003cp class=\"esk-note\"\u003eEstimates assume 85% usable energy and typical load ratings; actual runtime depends on your appliances, weather and settings.\u003c\/p\u003e\n\u003cdiv class=\"esk-run-grid\"\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~2.1 days\u003c\/span\u003e\u003cspan class=\"dev\"\u003eTypical home (22kWh\/day), no sun\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~15 hours\u003c\/span\u003e\u003cspan class=\"dev\"\u003eCentral AC 3-ton (3kW) continuous\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~46 hours\u003c\/span\u003e\u003cspan class=\"dev\"\u003eRefrigerator + freezer (1kW)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e36kW\u003c\/span\u003e\u003cspan class=\"dev\"\u003eContinuous output, whole-house loads\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-faqs\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eFAQ\u003c\/span\u003e\u003ch2\u003eK0966 Common Questions\u003c\/h2\u003e\n\u003cdiv class=\"esk-faq-grid\"\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ1\u003c\/span\u003e\u003ch3\u003eHow long will 46.08kWh power my home?\u003c\/h3\u003e\n\u003cp\u003eAbout 2.1 days for a typical 22kWh\/day home with no solar input; with solar panels connected to the 18kPV (up to 54kW) the batteries recharge daily.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ2\u003c\/span\u003e\u003ch3\u003eDoes the kit include solar panels?\u003c\/h3\u003e\n\u003cp\u003eNo. This is a battery + inverter ESS. Connect any PV array within the inverter limits (100-600Vdc, 18kW per inverter), or run it as grid-charged backup without solar.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ3\u003c\/span\u003e\u003ch3\u003eIs it grid-tied or off-grid?\u003c\/h3\u003e\n\u003cp\u003eBoth. The EG4 18kPV is UL1741 certified for grid interaction (export or zero-export) and also runs fully off-grid; it has a generator input as well.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ4\u003c\/span\u003e\u003ch3\u003eCan I add more batteries later?\u003c\/h3\u003e\n\u003cp\u003eYes. Each ETHOS control box supports up to 16 modules, and BigBattery sells single ETHOS modules, so the system can grow past 80kWh.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ5\u003c\/span\u003e\u003ch3\u003eDoes it ship free?\u003c\/h3\u003e\n\u003cp\u003eYes - free freight shipping within the contiguous USA, $0 sales tax in most states.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-specs alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eData\u003c\/span\u003e\u003ch2\u003eK0966 Specifications\u003c\/h2\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003eBigBattery ETHOS 48V 5.12kWh Stackable Battery Module (per module)\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eBattery\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem voltage\u003c\/td\u003e\n\u003ctd\u003e48V (51.2V nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry\u003c\/td\u003e\n\u003ctd\u003eLiFePO4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity per module\u003c\/td\u003e\n\u003ctd\u003e5.12kWh \/ 100Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCell configuration\u003c\/td\u003e\n\u003ctd\u003e16S per module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging voltage range\u003c\/td\u003e\n\u003ctd\u003e55.6-57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge voltage\u003c\/td\u003e\n\u003ctd\u003e57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating voltage range\u003c\/td\u003e\n\u003ctd\u003e48-57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuggested low-voltage cutoff\u003c\/td\u003e\n\u003ctd\u003e48-50.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMS cutoff range\u003c\/td\u003e\n\u003ctd\u003e42-47V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous discharge current\u003c\/td\u003e\n\u003ctd\u003e100A per module (200A per control box)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax discharge peak current\u003c\/td\u003e\n\u003ctd\u003e300A (max 5 seconds)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge current\u003c\/td\u003e\n\u003ctd\u003e200A per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCycle life\u003c\/td\u003e\n\u003ctd\u003e6,000+ cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eGeneral\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharge temperature\u003c\/td\u003e\n\u003ctd\u003e32-113°F (0-45°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarge temperature\u003c\/td\u003e\n\u003ctd\u003e-4-140°F (-20-60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptimal discharge temperature\u003c\/td\u003e\n\u003ctd\u003e59-95°F (15-35°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage (SoC \u0026gt;50%)\u003c\/td\u003e\n\u003ctd\u003e-4-113°F, max 6 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule footprint\u003c\/td\u003e\n\u003ctd\u003e26.5 in W x 6.7 in D (674 x 170 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax connections\u003c\/td\u003e\n\u003ctd\u003eUp to 16 modules per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eCANBus \/ RS485 (closed-loop with EG4 18kPV)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL9540, UL9540A, UL1973, UN38.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e12 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003e\u003ca href=\"\/products\/eg4-12kw-18kpv-hybrid-inverter\"\u003eEG4 18kPV All-in-One Hybrid Inverter (per inverter)\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eAC Output\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power\u003c\/td\u003e\n\u003ctd\u003e12,000W continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput voltage\u003c\/td\u003e\n\u003ctd\u003e120\/240Vac split-phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous output current\u003c\/td\u003e\n\u003ctd\u003e50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous line wattage\u003c\/td\u003e\n\u003ctd\u003e8,000W per 120V leg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge with PV\u003c\/td\u003e\n\u003ctd\u003e14,700W (10 min) \/ 15,500W (5 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge without PV\u003c\/td\u003e\n\u003ctd\u003e13,500W (10 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower factor\u003c\/td\u003e\n\u003ctd\u003e0.99 (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;5% (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransfer time\u003c\/td\u003e\n\u003ctd\u003e10-20ms (single) \/ 20ms (parallel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax parallel\u003c\/td\u003e\n\u003ctd\u003e10 units\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eAC Input\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrid input\u003c\/td\u003e\n\u003ctd\u003e120\/240Vac, 50\/60Hz, 180-270Vac\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC input power\u003c\/td\u003e\n\u003ctd\u003e12,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC bypass\u003c\/td\u003e\n\u003ctd\u003e200A (grid) \/ 90A (generator)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003ePV Input\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT trackers\u003c\/td\u003e\n\u003ctd\u003e3 (2 inputs on MPPT 1, 1 each on MPPT 2 and 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax PV array power\u003c\/td\u003e\n\u003ctd\u003e18,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax input current\u003c\/td\u003e\n\u003ctd\u003e25A (MPPT 1) \/ 15A (MPPT 2 and 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC input voltage range\u003c\/td\u003e\n\u003ctd\u003e100-600Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStart-up voltage\u003c\/td\u003e\n\u003ctd\u003e100Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT operating range\u003c\/td\u003e\n\u003ctd\u003e140-500Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax efficiency\u003c\/td\u003e\n\u003ctd\u003e94-99.9%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eBattery and General\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery voltage\u003c\/td\u003e\n\u003ctd\u003e48Vdc nominal, 40-60Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge \/ discharge current\u003c\/td\u003e\n\u003ctd\u003e250A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdle consumption\u003c\/td\u003e\n\u003ctd\u003e~70W normal \/ ~18W standby\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e-13 to 140°F (-25 to 60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAltitude\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;6,561 ft (2,000 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise\u003c\/td\u003e\n\u003ctd\u003e68dB at 3 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eRS485 \/ CANBus \/ Wi-Fi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e20.5 x 11.2 x 34.3 in (520 x 285 x 871 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e121 lb (55 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-downloads alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eAdditional Documentation\u003c\/span\u003e\u003ch2\u003eDocuments \u0026amp; Downloads\u003c\/h2\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ETHOS-SpecSheet-1.4-BatteryCB.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS Battery Spec Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS + EG4 ESS User Manual (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-UL9540A-Certificate-1.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UL9540A Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-UL1973-ETHOS.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UL1973 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-48V-ETHOS-DOC-UN38.3.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UN38.3 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-SDS_BigBattery_LFP-1.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e BigBattery LFP Safety Data Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Spec-Sheet.pdf?v=1789927253\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV Spec Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Manual-1.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV User Manual (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Certification.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV UL1741 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-RSD-Initiator-Install-Instructions-EG4-18kPV-Version-1-External.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV Rapid Shutdown Wiring Guide (PDF)\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003cdiv class=\"esk-footer\"\u003e\u003cp\u003e\u003cstrong\u003eFree shipping\u003c\/strong\u003e within the contiguous USA · \u003cstrong\u003e$0 sales tax\u003c\/strong\u003e in most states · Questions? Call \u003ca href=\"tel:+13073177213\"\u003e+1 307 317 7213\u003c\/a\u003e\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BigBattery","offers":[{"title":"Default Title","offer_id":50214628261943,"sku":"K0966","price":22437.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/46-kWh-x9-Batteries-KIT0966-V2.webp?v=1789927970"},{"product_id":"bigbattery-ethos-48v-61-44kwh-battery-3x-eg4-18kpv-36kw-hybrid-inverter-ess-k0967","title":"BigBattery ETHOS 48V 61.44kWh LiFePO4 Battery + 3 x EG4 18kPV Hybrid Inverter ESS | 36kW Output, 54kW PV | UL9540 Whole-Home Backup | K0967","description":"\u003cdiv class=\"esk-jk-pd\"\u003e\n\u003cdiv class=\"esk-hero\"\u003e\n\u003cp class=\"esk-eyebrow\"\u003eEnergy Storage System · 36kW · 61.44kWh · 54kW PV\u003c\/p\u003e\n\u003ch2\u003e61.44kWh of Stackable LiFePO4 Storage with 36kW of Hybrid Inverter Power\u003c\/h2\u003e\n\u003cp class=\"esk-lead\"\u003eA UL 9540 certified whole-home energy storage system: 12 stackable ETHOS 48V LiFePO4 modules (61.44kWh, 4 modules + 4 modules + 4 modules) matched with 3 EG4 18kPV hybrid inverters for 36kW of continuous three-phase 120\/208V capable output and up to 54kW of solar input.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-rays\"\u003e\u003csvg viewbox=\"0 0 700 22\" preserveaspectratio=\"none\"\u003e\u003cpath d=\"M0,11 L30,4 M40,11 L65,2 M75,11 L95,5 M110,11 L125,3 M140,11 L160,6\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003cpath d=\"M700,11 L670,4 M660,11 L635,2 M625,11 L605,5 M590,11 L575,3 M560,11 L540,6\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003ccircle cx=\"350\" cy=\"11\" r=\"9\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\u003e\u003c\/circle\u003e\u003cpath d=\"M300,11 L180,11 M420,11 L520,11\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\" opacity=\"0.55\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-stats\"\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e36kW\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eContinuous AC Output\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e61.44kWh\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eLiFePO4 Storage\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e54kW\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eMax Solar Input\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e12 Years\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eBattery Warranty\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-kit-K0967.webp?v=1789927252\u0026amp;width=1400\" alt=\"BigBattery ETHOS + EG4 18kPV energy storage system kit K0967 - 12 battery modules and 3 inverter(s)\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-overview\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eOverview\u003c\/span\u003e\u003ch2\u003eK0967 Overview\u003c\/h2\u003e\n\u003cp\u003eThe K0967 configuration of the BigBattery ETHOS + EG4 18kPV ESS combines 12 ETHOS 5.12kWh battery modules with 3 EG4 18kPV hybrid inverters. ETHOS modules stack on a rack base with a control box on top - no wall mounting, no rack cabinet - so 61.44kWh of storage installs in a footprint of 26.5 x 6.7 inches per stack. Every stack is IP65 \/ NEMA 4X rated and the batteries are UL1973, UL9540A and UN38.3 certified; together with the 18kPV the system is UL 9540 listed, which is what most utilities and inspectors now require for permitted home storage.\u003c\/p\u003e\n\u003cp\u003eEach EG4 18kPV supplies 12,000W of continuous 120\/240V split-phase power (15,500W surge with PV), accepts 18kW of solar on three MPPTs, and passes through 200A of grid power. It works on-grid with export or zero-export, off-grid, or as backup, and talks to the ETHOS control box in closed loop so charging current, state of charge and protection are coordinated automatically. With 3 inverters in parallel the system delivers 36kW continuous and up to 54kW of PV input and can be configured for 120\/208V three-phase output.\u003c\/p\u003e\n\u003cp\u003e61.44kWh is roughly 2.8 days of typical household consumption (22kWh\/day) without sun, and the ETHOS platform scales past 80kWh by adding modules to each control box (up to 16 per box). BigBattery ships from Texas with a 12-year battery warranty, a 10-year inverter warranty and lifetime US-based technical support. Solar panels and racking are not included - pair the system with any 100-600Vdc PV array up to 54kW.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/bigbattery-kits\" title=\"BigBattery Kits\"\u003eBigBattery backup systems\u003c\/a\u003e, \u003ca href=\"\/collections\/bigbattery-batteries\" title=\"BigBattery Batteries\"\u003eBigBattery lithium batteries\u003c\/a\u003e and \u003ca href=\"\/collections\/eg4-inverters\" title=\"EG4 Inverters\"\u003eEG4 inverters\u003c\/a\u003e.\u003c\/p\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-kit.webp?v=1789927251\u0026amp;width=1400\" alt=\"BigBattery ETHOS 48V 5.12kWh battery module - what is in the box\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-features alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eFeatures\u003c\/span\u003e\u003ch2\u003eK0967 Key Features\u003c\/h2\u003e\n\u003cdiv class=\"esk-feat-grid\"\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e01\u003c\/span\u003e\u003ch3\u003eUL 9540 certified ESS\u003c\/h3\u003e\n\u003cp\u003eETHOS battery and EG4 18kPV are certified together as a complete energy storage system, with UL9540A fire-safety testing, UL1973 and UN38.3 on the battery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e02\u003c\/span\u003e\u003ch3\u003e61.44kWh stackable LiFePO4\u003c\/h3\u003e\n\u003cp\u003e12 modules of 5.12kWh \/ 100Ah each, 6,000+ cycles, 16S cells and a smart BMS in every module; expand to 80+ kWh by adding modules.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e03\u003c\/span\u003e\u003ch3\u003e36kW hybrid power, 54kW solar\u003c\/h3\u003e\n\u003cp\u003eEG4 18kPV: 12kW per unit, three MPPTs, 100-600Vdc input, 200A pass-through, generator input, RSD support and Wi-Fi monitoring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e04\u003c\/span\u003e\u003ch3\u003eClosed-loop communication\u003c\/h3\u003e\n\u003cp\u003eCANBus link between control box and inverter for coordinated charging, accurate state of charge and protection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e05\u003c\/span\u003e\u003ch3\u003eIP65 \/ NEMA 4X\u003c\/h3\u003e\n\u003cp\u003eBattery stacks and inverter are weather rated for garages, covered patios and utility areas.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e06\u003c\/span\u003e\u003ch3\u003eFast, maintenance-free installation\u003c\/h3\u003e\n\u003cp\u003eStack, connect the included cables, and go - no routine servicing, 12-year battery and 10-year inverter warranties.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-install.jpg?v=1789927251\u0026amp;width=1400\" alt=\"Customer installation - EG4 hybrid inverter with stacked BigBattery ETHOS modules in a utility room\" width=\"1400\" height=\"1867\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-box\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eIncluded\u003c\/span\u003e\u003ch2\u003eWhat's in the Kit\u003c\/h2\u003e\n\u003cul class=\"esk-box-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e12×\u003c\/span\u003e\u003cspan\u003eBigBattery ETHOS 48V 5.12kWh stackable LiFePO4 battery module\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e3×\u003c\/span\u003e\u003cspan\u003eEG4 18kPV all-in-one hybrid solar inverter (18kW PV \/ 12kW AC)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e3×\u003c\/span\u003e\u003cspan\u003eETHOS control box\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e3×\u003c\/span\u003e\u003cspan\u003eETHOS rack base\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e6×\u003c\/span\u003e\u003cspan\u003eETHOS stack-to-stack power cable pair (4.9 ft)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e3×\u003c\/span\u003e\u003cspan\u003eETHOS stack-to-stack comm cable (4.9 ft)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eParallel busbar\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e3×\u003c\/span\u003e\u003cspan\u003eETHOS battery top plate cover\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-inv-open.webp?v=1789927250\u0026amp;width=1400\" alt=\"EG4 18kPV hybrid inverter with wiring compartment open\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-runtime alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eRuntime\u003c\/span\u003e\u003ch2\u003eWhat 61.44kWh of storage can run\u003c\/h2\u003e\n\u003cp class=\"esk-note\"\u003eEstimates assume 85% usable energy and typical load ratings; actual runtime depends on your appliances, weather and settings.\u003c\/p\u003e\n\u003cdiv class=\"esk-run-grid\"\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~2.8 days\u003c\/span\u003e\u003cspan class=\"dev\"\u003eTypical home (22kWh\/day), no sun\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~20 hours\u003c\/span\u003e\u003cspan class=\"dev\"\u003eCentral AC 3-ton (3kW) continuous\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~61 hours\u003c\/span\u003e\u003cspan class=\"dev\"\u003eRefrigerator + freezer (1kW)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e36kW\u003c\/span\u003e\u003cspan class=\"dev\"\u003eContinuous output, whole-house loads\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-faqs\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eFAQ\u003c\/span\u003e\u003ch2\u003eK0967 Common Questions\u003c\/h2\u003e\n\u003cdiv class=\"esk-faq-grid\"\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ1\u003c\/span\u003e\u003ch3\u003eHow long will 61.44kWh power my home?\u003c\/h3\u003e\n\u003cp\u003eAbout 2.8 days for a typical 22kWh\/day home with no solar input; with solar panels connected to the 18kPV (up to 54kW) the batteries recharge daily.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ2\u003c\/span\u003e\u003ch3\u003eDoes the kit include solar panels?\u003c\/h3\u003e\n\u003cp\u003eNo. This is a battery + inverter ESS. Connect any PV array within the inverter limits (100-600Vdc, 18kW per inverter), or run it as grid-charged backup without solar.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ3\u003c\/span\u003e\u003ch3\u003eIs it grid-tied or off-grid?\u003c\/h3\u003e\n\u003cp\u003eBoth. The EG4 18kPV is UL1741 certified for grid interaction (export or zero-export) and also runs fully off-grid; it has a generator input as well.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ4\u003c\/span\u003e\u003ch3\u003eCan I add more batteries later?\u003c\/h3\u003e\n\u003cp\u003eYes. Each ETHOS control box supports up to 16 modules, and BigBattery sells single ETHOS modules, so the system can grow past 80kWh.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ5\u003c\/span\u003e\u003ch3\u003eDoes it ship free?\u003c\/h3\u003e\n\u003cp\u003eYes - free freight shipping within the contiguous USA, $0 sales tax in most states.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-specs alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eData\u003c\/span\u003e\u003ch2\u003eK0967 Specifications\u003c\/h2\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003eBigBattery ETHOS 48V 5.12kWh Stackable Battery Module (per module)\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eBattery\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem voltage\u003c\/td\u003e\n\u003ctd\u003e48V (51.2V nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry\u003c\/td\u003e\n\u003ctd\u003eLiFePO4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity per module\u003c\/td\u003e\n\u003ctd\u003e5.12kWh \/ 100Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCell configuration\u003c\/td\u003e\n\u003ctd\u003e16S per module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging voltage range\u003c\/td\u003e\n\u003ctd\u003e55.6-57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge voltage\u003c\/td\u003e\n\u003ctd\u003e57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating voltage range\u003c\/td\u003e\n\u003ctd\u003e48-57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuggested low-voltage cutoff\u003c\/td\u003e\n\u003ctd\u003e48-50.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMS cutoff range\u003c\/td\u003e\n\u003ctd\u003e42-47V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous discharge current\u003c\/td\u003e\n\u003ctd\u003e100A per module (200A per control box)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax discharge peak current\u003c\/td\u003e\n\u003ctd\u003e300A (max 5 seconds)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge current\u003c\/td\u003e\n\u003ctd\u003e200A per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCycle life\u003c\/td\u003e\n\u003ctd\u003e6,000+ cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eGeneral\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharge temperature\u003c\/td\u003e\n\u003ctd\u003e32-113°F (0-45°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarge temperature\u003c\/td\u003e\n\u003ctd\u003e-4-140°F (-20-60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptimal discharge temperature\u003c\/td\u003e\n\u003ctd\u003e59-95°F (15-35°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage (SoC \u0026gt;50%)\u003c\/td\u003e\n\u003ctd\u003e-4-113°F, max 6 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule footprint\u003c\/td\u003e\n\u003ctd\u003e26.5 in W x 6.7 in D (674 x 170 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax connections\u003c\/td\u003e\n\u003ctd\u003eUp to 16 modules per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eCANBus \/ RS485 (closed-loop with EG4 18kPV)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL9540, UL9540A, UL1973, UN38.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e12 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003e\u003ca href=\"\/products\/eg4-12kw-18kpv-hybrid-inverter\"\u003eEG4 18kPV All-in-One Hybrid Inverter (per inverter)\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eAC Output\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power\u003c\/td\u003e\n\u003ctd\u003e12,000W continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput voltage\u003c\/td\u003e\n\u003ctd\u003e120\/240Vac split-phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous output current\u003c\/td\u003e\n\u003ctd\u003e50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous line wattage\u003c\/td\u003e\n\u003ctd\u003e8,000W per 120V leg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge with PV\u003c\/td\u003e\n\u003ctd\u003e14,700W (10 min) \/ 15,500W (5 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge without PV\u003c\/td\u003e\n\u003ctd\u003e13,500W (10 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower factor\u003c\/td\u003e\n\u003ctd\u003e0.99 (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;5% (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransfer time\u003c\/td\u003e\n\u003ctd\u003e10-20ms (single) \/ 20ms (parallel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax parallel\u003c\/td\u003e\n\u003ctd\u003e10 units\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eAC Input\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrid input\u003c\/td\u003e\n\u003ctd\u003e120\/240Vac, 50\/60Hz, 180-270Vac\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC input power\u003c\/td\u003e\n\u003ctd\u003e12,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC bypass\u003c\/td\u003e\n\u003ctd\u003e200A (grid) \/ 90A (generator)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003ePV Input\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT trackers\u003c\/td\u003e\n\u003ctd\u003e3 (2 inputs on MPPT 1, 1 each on MPPT 2 and 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax PV array power\u003c\/td\u003e\n\u003ctd\u003e18,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax input current\u003c\/td\u003e\n\u003ctd\u003e25A (MPPT 1) \/ 15A (MPPT 2 and 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC input voltage range\u003c\/td\u003e\n\u003ctd\u003e100-600Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStart-up voltage\u003c\/td\u003e\n\u003ctd\u003e100Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT operating range\u003c\/td\u003e\n\u003ctd\u003e140-500Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax efficiency\u003c\/td\u003e\n\u003ctd\u003e94-99.9%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eBattery and General\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery voltage\u003c\/td\u003e\n\u003ctd\u003e48Vdc nominal, 40-60Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge \/ discharge current\u003c\/td\u003e\n\u003ctd\u003e250A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdle consumption\u003c\/td\u003e\n\u003ctd\u003e~70W normal \/ ~18W standby\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e-13 to 140°F (-25 to 60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAltitude\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;6,561 ft (2,000 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise\u003c\/td\u003e\n\u003ctd\u003e68dB at 3 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eRS485 \/ CANBus \/ Wi-Fi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e20.5 x 11.2 x 34.3 in (520 x 285 x 871 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e121 lb (55 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-downloads alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eAdditional Documentation\u003c\/span\u003e\u003ch2\u003eDocuments \u0026amp; Downloads\u003c\/h2\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ETHOS-SpecSheet-1.4-BatteryCB.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS Battery Spec Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS + EG4 ESS User Manual (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-UL9540A-Certificate-1.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UL9540A Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-UL1973-ETHOS.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UL1973 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-48V-ETHOS-DOC-UN38.3.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UN38.3 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-SDS_BigBattery_LFP-1.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e BigBattery LFP Safety Data Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Spec-Sheet.pdf?v=1789927253\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV Spec Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Manual-1.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV User Manual (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Certification.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV UL1741 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-RSD-Initiator-Install-Instructions-EG4-18kPV-Version-1-External.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV Rapid Shutdown Wiring Guide (PDF)\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003cdiv class=\"esk-footer\"\u003e\u003cp\u003e\u003cstrong\u003eFree shipping\u003c\/strong\u003e within the contiguous USA · \u003cstrong\u003e$0 sales tax\u003c\/strong\u003e in most states · Questions? Call \u003ca href=\"tel:+13073177213\"\u003e+1 307 317 7213\u003c\/a\u003e\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BigBattery","offers":[{"title":"Default Title","offer_id":50214628294711,"sku":"K0967","price":25624.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/61-kWh-x12-Batteries-KIT0967-V2.webp?v=1789928005"},{"product_id":"bigbattery-ethos-48v-92-16kwh-battery-3x-eg4-18kpv-36kw-hybrid-inverter-ess-k0968","title":"BigBattery ETHOS 48V 92.16kWh LiFePO4 Battery + 3 x EG4 18kPV Hybrid Inverter ESS | 36kW Output, 54kW PV | UL9540 Whole-Home Backup | K0968","description":"\u003cdiv class=\"esk-jk-pd\"\u003e\n\u003cdiv class=\"esk-hero\"\u003e\n\u003cp class=\"esk-eyebrow\"\u003eEnergy Storage System · 36kW · 92.16kWh · 54kW PV\u003c\/p\u003e\n\u003ch2\u003e92.16kWh of Stackable LiFePO4 Storage with 36kW of Hybrid Inverter Power\u003c\/h2\u003e\n\u003cp class=\"esk-lead\"\u003eA UL 9540 certified whole-home energy storage system: 18 stackable ETHOS 48V LiFePO4 modules (92.16kWh, 6 modules + 6 modules + 6 modules) matched with 3 EG4 18kPV hybrid inverters for 36kW of continuous three-phase 120\/208V capable output and up to 54kW of solar input.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-rays\"\u003e\u003csvg viewbox=\"0 0 700 22\" preserveaspectratio=\"none\"\u003e\u003cpath d=\"M0,11 L30,4 M40,11 L65,2 M75,11 L95,5 M110,11 L125,3 M140,11 L160,6\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003cpath d=\"M700,11 L670,4 M660,11 L635,2 M625,11 L605,5 M590,11 L575,3 M560,11 L540,6\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\"\u003e\u003c\/path\u003e\u003ccircle cx=\"350\" cy=\"11\" r=\"9\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"\u003e\u003c\/circle\u003e\u003cpath d=\"M300,11 L180,11 M420,11 L520,11\" stroke=\"currentColor\" stroke-width=\"2\" stroke-linecap=\"round\" fill=\"none\" opacity=\"0.55\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-stats\"\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e36kW\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eContinuous AC Output\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e92.16kWh\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eLiFePO4 Storage\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e54kW\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eMax Solar Input\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-stat\"\u003e\n\u003cspan class=\"num\"\u003e12 Years\u003c\/span\u003e\u003cspan class=\"lbl\"\u003eBattery Warranty\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-kit-K0968.webp?v=1789927251\u0026amp;width=1400\" alt=\"BigBattery ETHOS + EG4 18kPV energy storage system kit K0968 - 18 battery modules and 3 inverter(s)\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-overview\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eOverview\u003c\/span\u003e\u003ch2\u003eK0968 Overview\u003c\/h2\u003e\n\u003cp\u003eThe K0968 configuration of the BigBattery ETHOS + EG4 18kPV ESS combines 18 ETHOS 5.12kWh battery modules with 3 EG4 18kPV hybrid inverters. ETHOS modules stack on a rack base with a control box on top - no wall mounting, no rack cabinet - so 92.16kWh of storage installs in a footprint of 26.5 x 6.7 inches per stack. Every stack is IP65 \/ NEMA 4X rated and the batteries are UL1973, UL9540A and UN38.3 certified; together with the 18kPV the system is UL 9540 listed, which is what most utilities and inspectors now require for permitted home storage.\u003c\/p\u003e\n\u003cp\u003eEach EG4 18kPV supplies 12,000W of continuous 120\/240V split-phase power (15,500W surge with PV), accepts 18kW of solar on three MPPTs, and passes through 200A of grid power. It works on-grid with export or zero-export, off-grid, or as backup, and talks to the ETHOS control box in closed loop so charging current, state of charge and protection are coordinated automatically. With 3 inverters in parallel the system delivers 36kW continuous and up to 54kW of PV input and can be configured for 120\/208V three-phase output.\u003c\/p\u003e\n\u003cp\u003e92.16kWh is roughly 4.2 days of typical household consumption (22kWh\/day) without sun, and the ETHOS platform scales past 80kWh by adding modules to each control box (up to 16 per box). BigBattery ships from Texas with a 12-year battery warranty, a 10-year inverter warranty and lifetime US-based technical support. Solar panels and racking are not included - pair the system with any 100-600Vdc PV array up to 54kW.\u003c\/p\u003e\n\u003cp\u003eBrowse all \u003ca href=\"\/collections\/bigbattery-kits\" title=\"BigBattery Kits\"\u003eBigBattery backup systems\u003c\/a\u003e, \u003ca href=\"\/collections\/bigbattery-batteries\" title=\"BigBattery Batteries\"\u003eBigBattery lithium batteries\u003c\/a\u003e and \u003ca href=\"\/collections\/eg4-inverters\" title=\"EG4 Inverters\"\u003eEG4 inverters\u003c\/a\u003e.\u003c\/p\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-kit.webp?v=1789927251\u0026amp;width=1400\" alt=\"BigBattery ETHOS 48V 5.12kWh battery module - what is in the box\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-features alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eFeatures\u003c\/span\u003e\u003ch2\u003eK0968 Key Features\u003c\/h2\u003e\n\u003cdiv class=\"esk-feat-grid\"\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e01\u003c\/span\u003e\u003ch3\u003eUL 9540 certified ESS\u003c\/h3\u003e\n\u003cp\u003eETHOS battery and EG4 18kPV are certified together as a complete energy storage system, with UL9540A fire-safety testing, UL1973 and UN38.3 on the battery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e02\u003c\/span\u003e\u003ch3\u003e92.16kWh stackable LiFePO4\u003c\/h3\u003e\n\u003cp\u003e18 modules of 5.12kWh \/ 100Ah each, 6,000+ cycles, 16S cells and a smart BMS in every module; expand to 80+ kWh by adding modules.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e03\u003c\/span\u003e\u003ch3\u003e36kW hybrid power, 54kW solar\u003c\/h3\u003e\n\u003cp\u003eEG4 18kPV: 12kW per unit, three MPPTs, 100-600Vdc input, 200A pass-through, generator input, RSD support and Wi-Fi monitoring.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e04\u003c\/span\u003e\u003ch3\u003eClosed-loop communication\u003c\/h3\u003e\n\u003cp\u003eCANBus link between control box and inverter for coordinated charging, accurate state of charge and protection.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e05\u003c\/span\u003e\u003ch3\u003eIP65 \/ NEMA 4X\u003c\/h3\u003e\n\u003cp\u003eBattery stacks and inverter are weather rated for garages, covered patios and utility areas.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-feat\"\u003e\n\u003cspan class=\"idx\"\u003e06\u003c\/span\u003e\u003ch3\u003eFast, maintenance-free installation\u003c\/h3\u003e\n\u003cp\u003eStack, connect the included cables, and go - no routine servicing, 12-year battery and 10-year inverter warranties.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-install.jpg?v=1789927251\u0026amp;width=1400\" alt=\"Customer installation - EG4 hybrid inverter with stacked BigBattery ETHOS modules in a utility room\" width=\"1400\" height=\"1867\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-box\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eIncluded\u003c\/span\u003e\u003ch2\u003eWhat's in the Kit\u003c\/h2\u003e\n\u003cul class=\"esk-box-list\"\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e18×\u003c\/span\u003e\u003cspan\u003eBigBattery ETHOS 48V 5.12kWh stackable LiFePO4 battery module\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e3×\u003c\/span\u003e\u003cspan\u003eETHOS control box\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e3×\u003c\/span\u003e\u003cspan\u003eETHOS rack base\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e6×\u003c\/span\u003e\u003cspan\u003eETHOS stack-to-stack power cable pair (4.9 ft)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e3×\u003c\/span\u003e\u003cspan\u003eETHOS stack-to-stack comm cable (4.9 ft)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e3×\u003c\/span\u003e\u003cspan\u003eEG4 18kPV all-in-one hybrid solar inverter (18kW PV \/ 12kW AC)\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e1×\u003c\/span\u003e\u003cspan\u003eParallel busbar\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan class=\"qty\"\u003e3×\u003c\/span\u003e\u003cspan\u003eETHOS battery top plate cover\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/section\u003e\u003cfigure class=\"esk-banner\" style=\"padding-top:32px\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ethos-bb-inv-open.webp?v=1789927250\u0026amp;width=1400\" alt=\"EG4 18kPV hybrid inverter with wiring compartment open\" width=\"1400\" height=\"876\" loading=\"lazy\" decoding=\"async\"\u003e\u003c\/figure\u003e\u003csection class=\"esk-runtime alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eRuntime\u003c\/span\u003e\u003ch2\u003eWhat 92.16kWh of storage can run\u003c\/h2\u003e\n\u003cp class=\"esk-note\"\u003eEstimates assume 85% usable energy and typical load ratings; actual runtime depends on your appliances, weather and settings.\u003c\/p\u003e\n\u003cdiv class=\"esk-run-grid\"\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~4.2 days\u003c\/span\u003e\u003cspan class=\"dev\"\u003eTypical home (22kWh\/day), no sun\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~31 hours\u003c\/span\u003e\u003cspan class=\"dev\"\u003eCentral AC 3-ton (3kW) continuous\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e~92 hours\u003c\/span\u003e\u003cspan class=\"dev\"\u003eRefrigerator + freezer (1kW)\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-run\"\u003e\n\u003cspan class=\"val\"\u003e36kW\u003c\/span\u003e\u003cspan class=\"dev\"\u003eContinuous output, whole-house loads\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-faqs\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eFAQ\u003c\/span\u003e\u003ch2\u003eK0968 Common Questions\u003c\/h2\u003e\n\u003cdiv class=\"esk-faq-grid\"\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ1\u003c\/span\u003e\u003ch3\u003eHow long will 92.16kWh power my home?\u003c\/h3\u003e\n\u003cp\u003eAbout 4.2 days for a typical 22kWh\/day home with no solar input; with solar panels connected to the 18kPV (up to 54kW) the batteries recharge daily.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ2\u003c\/span\u003e\u003ch3\u003eDoes the kit include solar panels?\u003c\/h3\u003e\n\u003cp\u003eNo. This is a battery + inverter ESS. Connect any PV array within the inverter limits (100-600Vdc, 18kW per inverter), or run it as grid-charged backup without solar.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ3\u003c\/span\u003e\u003ch3\u003eIs it grid-tied or off-grid?\u003c\/h3\u003e\n\u003cp\u003eBoth. The EG4 18kPV is UL1741 certified for grid interaction (export or zero-export) and also runs fully off-grid; it has a generator input as well.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ4\u003c\/span\u003e\u003ch3\u003eCan I add more batteries later?\u003c\/h3\u003e\n\u003cp\u003eYes. Each ETHOS control box supports up to 16 modules, and BigBattery sells single ETHOS modules, so the system can grow past 80kWh.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-faq\"\u003e\n\u003cspan class=\"idx\"\u003eQ5\u003c\/span\u003e\u003ch3\u003eDoes it ship free?\u003c\/h3\u003e\n\u003cp\u003eYes - free freight shipping within the contiguous USA, $0 sales tax in most states.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-specs alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eData\u003c\/span\u003e\u003ch2\u003eK0968 Specifications\u003c\/h2\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003eBigBattery ETHOS 48V 5.12kWh Stackable Battery Module (per module)\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eBattery\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem voltage\u003c\/td\u003e\n\u003ctd\u003e48V (51.2V nominal)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eChemistry\u003c\/td\u003e\n\u003ctd\u003eLiFePO4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity per module\u003c\/td\u003e\n\u003ctd\u003e5.12kWh \/ 100Ah\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCell configuration\u003c\/td\u003e\n\u003ctd\u003e16S per module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging voltage range\u003c\/td\u003e\n\u003ctd\u003e55.6-57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge voltage\u003c\/td\u003e\n\u003ctd\u003e57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating voltage range\u003c\/td\u003e\n\u003ctd\u003e48-57V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSuggested low-voltage cutoff\u003c\/td\u003e\n\u003ctd\u003e48-50.8V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBMS cutoff range\u003c\/td\u003e\n\u003ctd\u003e42-47V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous discharge current\u003c\/td\u003e\n\u003ctd\u003e100A per module (200A per control box)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax discharge peak current\u003c\/td\u003e\n\u003ctd\u003e300A (max 5 seconds)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge current\u003c\/td\u003e\n\u003ctd\u003e200A per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCycle life\u003c\/td\u003e\n\u003ctd\u003e6,000+ cycles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eGeneral\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharge temperature\u003c\/td\u003e\n\u003ctd\u003e32-113°F (0-45°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarge temperature\u003c\/td\u003e\n\u003ctd\u003e-4-140°F (-20-60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptimal discharge temperature\u003c\/td\u003e\n\u003ctd\u003e59-95°F (15-35°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage (SoC \u0026gt;50%)\u003c\/td\u003e\n\u003ctd\u003e-4-113°F, max 6 months\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule footprint\u003c\/td\u003e\n\u003ctd\u003e26.5 in W x 6.7 in D (674 x 170 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax connections\u003c\/td\u003e\n\u003ctd\u003eUp to 16 modules per control box\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eCANBus \/ RS485 (closed-loop with EG4 18kPV)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL9540, UL9540A, UL1973, UN38.3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e12 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"esk-specs-block\"\u003e\n\u003cp class=\"esk-specs-block-title\"\u003e\u003ca href=\"\/products\/eg4-12kw-18kpv-hybrid-inverter\"\u003eEG4 18kPV All-in-One Hybrid Inverter (per inverter)\u003c\/a\u003e\u003c\/p\u003e\n\u003cdiv class=\"esk-spec-groups\"\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eAC Output\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput power\u003c\/td\u003e\n\u003ctd\u003e12,000W continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput voltage\u003c\/td\u003e\n\u003ctd\u003e120\/240Vac split-phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous output current\u003c\/td\u003e\n\u003ctd\u003e50A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous line wattage\u003c\/td\u003e\n\u003ctd\u003e8,000W per 120V leg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge with PV\u003c\/td\u003e\n\u003ctd\u003e14,700W (10 min) \/ 15,500W (5 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSurge without PV\u003c\/td\u003e\n\u003ctd\u003e13,500W (10 min)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower factor\u003c\/td\u003e\n\u003ctd\u003e0.99 (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTHD\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;5% (full load)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransfer time\u003c\/td\u003e\n\u003ctd\u003e10-20ms (single) \/ 20ms (parallel)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax parallel\u003c\/td\u003e\n\u003ctd\u003e10 units\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eAC Input\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGrid input\u003c\/td\u003e\n\u003ctd\u003e120\/240Vac, 50\/60Hz, 180-270Vac\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC input power\u003c\/td\u003e\n\u003ctd\u003e12,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax AC bypass\u003c\/td\u003e\n\u003ctd\u003e200A (grid) \/ 90A (generator)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv class=\"esk-spec-group\"\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003ePV Input\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT trackers\u003c\/td\u003e\n\u003ctd\u003e3 (2 inputs on MPPT 1, 1 each on MPPT 2 and 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax PV array power\u003c\/td\u003e\n\u003ctd\u003e18,000W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax input current\u003c\/td\u003e\n\u003ctd\u003e25A (MPPT 1) \/ 15A (MPPT 2 and 3)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDC input voltage range\u003c\/td\u003e\n\u003ctd\u003e100-600Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStart-up voltage\u003c\/td\u003e\n\u003ctd\u003e100Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT operating range\u003c\/td\u003e\n\u003ctd\u003e140-500Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax efficiency\u003c\/td\u003e\n\u003ctd\u003e94-99.9%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"grp\"\u003e\u003ctd colspan=\"2\"\u003eBattery and General\u003c\/td\u003e\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBattery voltage\u003c\/td\u003e\n\u003ctd\u003e48Vdc nominal, 40-60Vdc\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge \/ discharge current\u003c\/td\u003e\n\u003ctd\u003e250A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIdle consumption\u003c\/td\u003e\n\u003ctd\u003e~70W normal \/ ~18W standby\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature\u003c\/td\u003e\n\u003ctd\u003e-13 to 140°F (-25 to 60°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAltitude\u003c\/td\u003e\n\u003ctd\u003e\u0026lt;6,561 ft (2,000 m)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNoise\u003c\/td\u003e\n\u003ctd\u003e68dB at 3 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP65 \/ NEMA 4X\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eRS485 \/ CANBus \/ Wi-Fi\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e20.5 x 11.2 x 34.3 in (520 x 285 x 871 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e121 lb (55 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e10 years\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003csection class=\"esk-downloads alt\"\u003e\u003cspan class=\"esk-eyebrow-sm\"\u003eAdditional Documentation\u003c\/span\u003e\u003ch2\u003eDocuments \u0026amp; Downloads\u003c\/h2\u003e\n\u003cdiv class=\"esk-download-list\"\u003e\n\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-ETHOS-SpecSheet-1.4-BatteryCB.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS Battery Spec Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-BB-x-EG4-08_11-ETHOS-ESS-USER-MANUAL.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS + EG4 ESS User Manual (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-UL9540A-Certificate-1.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UL9540A Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-UL1973-ETHOS.pdf?v=1789927251\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UL1973 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-48V-ETHOS-DOC-UN38.3.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e ETHOS UN38.3 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-SDS_BigBattery_LFP-1.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e BigBattery LFP Safety Data Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Spec-Sheet.pdf?v=1789927253\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV Spec Sheet (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Manual-1.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV User Manual (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-EG4-18KPV-12LV-Certification.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV UL1741 Certificate (PDF)\u003c\/a\u003e\u003ca class=\"esk-download\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/bigbattery-RSD-Initiator-Install-Instructions-EG4-18kPV-Version-1-External.pdf?v=1789927252\" target=\"_blank\" rel=\"noopener\"\u003e\u003csvg viewbox=\"0 0 24 24\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"M12 3v11\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"m8 10 4 4 4-4\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 17v3h14v-3\" stroke=\"currentColor\" stroke-width=\"2\" fill=\"none\" stroke-linecap=\"round\"\u003e\u003c\/path\u003e\u003c\/svg\u003e EG4 18kPV Rapid Shutdown Wiring Guide (PDF)\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/section\u003e\u003cdiv class=\"esk-footer\"\u003e\u003cp\u003e\u003cstrong\u003eFree shipping\u003c\/strong\u003e within the contiguous USA · \u003cstrong\u003e$0 sales tax\u003c\/strong\u003e in most states · Questions? Call \u003ca href=\"tel:+13073177213\"\u003e+1 307 317 7213\u003c\/a\u003e\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"BigBattery","offers":[{"title":"Default Title","offer_id":50214628360247,"sku":"K0968","price":31999.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/92-kWh-x18-Batteries-KIT0968-V2.webp?v=1789928010"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/collections\/channels4_profile.jpg?v=1752165037","url":"https:\/\/ecosolarkits.com\/collections\/eg4.oembed?page=2","provider":"Eco Solar Kits","version":"1.0","type":"link"}