{"product_id":"nexus-48v-14-3kwh-lifepo4-battery-apex-10k-inverter-off-grid-home-back-up-system","title":"NEXUS 48V 14.3kWh LiFePO4 Battery + APEX-10K Inverter | Off-Grid Home Back-Up System","description":"\u003cstyle\u003e\n.nexus10k-pd {\n  --ink: #000000;\n  --ink-2: #141414;\n  --paper: #F7F7F7;\n  --card: #FFFFFF;\n  --text: #000000;\n  --text-light: #FFFFFF;\n  --muted: #5C5C5C;\n  --accent: #246AAF;\n  --accent-2: #36AF24;\n  --line: #E2E2E2;\n  --radius: 14px;\n  --font-display: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;\n  --font-mono: 'IBM Plex Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;\n  font-family: var(--font-display) !important;\n  color: var(--text) !important;\n  opacity: 1 !important;\n  background: var(--card);\n  line-height: 1.65;\n  font-size: 16px;\n  border: 1px solid var(--line);\n  border-radius: var(--radius);\n  overflow: hidden;\n  box-shadow: 0 16px 40px rgba(16,20,25,0.10);\n}\n.nexus10k-pd, .nexus10k-pd *, .nexus10k-pd *::before, .nexus10k-pd *::after { box-sizing: border-box; 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}\n\u003c\/style\u003e\n\u003cdiv class=\"nexus10k-pd\"\u003e\n\u003c!-- ============ HERO ============ --\u003e\n\u003csection class=\"nx10-hero\"\u003e\n\u003cp class=\"nx10-eyebrow\"\u003e48V Off-Grid ESS · NEXUS + APEX-10K · Indoor System\u003c\/p\u003e\n\u003ch2\u003e14.3kWh of Off-Grid Power From a Pre-Matched Battery and Inverter Pair\u003c\/h2\u003e\n\u003cp class=\"nx10-lead\"\u003eThis system pairs one BigBattery NEXUS 14.3kWh battery with one APEX-10K hybrid inverter into a single closed-loop off-grid setup — 14.3kWh of storage and 10,000W of continuous output, with 80A pass-through for demanding loads. It's an indoor installation for both components, built for larger homes, homesteads, and off-grid properties, and it scales up to 214.5kWh on the same platform if you need more later.\u003c\/p\u003e\n\u003cdiv aria-hidden=\"true\" class=\"nx10-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=\"nx10-stats\"\u003e\n\u003cdiv class=\"nx10-stat\"\u003e\n\u003cspan class=\"num\"\u003e14.3kWh\u003c\/span\u003e\u003cspan class=\"label\"\u003eTotal Capacity\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nx10-stat\"\u003e\n\u003cspan class=\"num\"\u003e10,000W\u003c\/span\u003e\u003cspan class=\"label\"\u003eContinuous Output\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nx10-stat\"\u003e\n\u003cspan class=\"num\"\u003e10,500W\u003c\/span\u003e\u003cspan class=\"label\"\u003eMax PV Input\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nx10-stat\"\u003e\n\u003cspan class=\"num\"\u003e214.5kWh\u003c\/span\u003e\u003cspan class=\"label\"\u003eMax Expandable\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ CONFIGURATION ============ --\u003e\n\u003csection class=\"nx10-config\"\u003e\n\u003ch3\u003eWhat's In This System\u003c\/h3\u003e\n\u003cp class=\"nx10-config-sub\"\u003eTwo components, pre-matched and sold together.\u003c\/p\u003e\n\u003cdiv class=\"nx10-config-grid\"\u003e\n\u003cdiv class=\"nx10-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\u003eBigBattery NEXUS 14.3kWh\u003c\/h4\u003e\n\u003cp\u003eFloor-standing 48V LiFePO₄ battery, expandable up to 15 units in parallel for 214.5kWh total.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nx10-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\u003eAPEX-10K Hybrid Inverter\u003c\/h4\u003e\n\u003cp\u003e10,000W continuous output with 80A pass-through for large appliances and critical circuits.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ FEATURES ============ --\u003e\n\u003csection class=\"nx10-features\"\u003e\n\u003ch3\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/Screenshot_2026-07-13_190024.png?v=1783958515\" alt=\"Rewritten sentence: Three images highlight the BigBattery APEX-10K 10,000W Off-Grid Hybrid Solar Inverter (48V): one shows it mounted on an indoor wall with a sleek modern card background, another places it beside a house equipped with solar panels, and the third presents a technical diagram—utilizing clean IBM Plex Sans labels—identifying GRID, LOAD, GEN, BAT, and PV connections for seamless APEX-10K integration.\"\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003c\/h3\u003e\n\u003ch3\u003eWhat Makes This System Different\u003c\/h3\u003e\n\u003cdiv class=\"nx10-feature-grid\"\u003e\n\u003cdiv class=\"nx10-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\u003e14.3kWh NEXUS Battery\u003c\/h4\u003e\n\u003cp\u003eLiFePO₄ storage rated for 6,000+ cycles, with a 7.6kW continuous power rating and 270A peak discharge for 1 second.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nx10-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\u003e10,000W Continuous, 20,000VA Surge\u003c\/h4\u003e\n\u003cp\u003eThe APEX-10K delivers 10,000W continuously with headroom to start motors and pumps without tripping.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nx10-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\u003eSolar, Grid, or Generator\u003c\/h4\u003e\n\u003cp\u003eDraws from solar first and falls back to a single grid or generator input the moment the battery needs it (one AC source at a time).\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nx10-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, 10.5kW Solar Input\u003c\/h4\u003e\n\u003cp\u003eTwo independent MPPT trackers pull up to 10,500W combined, adjusting continuously through the day.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nx10-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\u003eExpandable to 214.5kWh\u003c\/h4\u003e\n\u003cp\u003eUp to 15 NEXUS units can run in parallel on the same platform, for serious long-term capacity growth.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nx10-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\u003e80A Pass-Through\u003c\/h4\u003e\n\u003cp\u003eRoutes up to 80A straight to critical loads — enough to carry a well pump or HVAC run without staging separate circuits.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nx10-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 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\u003e6,000+ Cycle Life\u003c\/h4\u003e\n\u003cp\u003eThe NEXUS battery is rated for years of daily charge and discharge cycles before capacity meaningfully declines.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nx10-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=\"nx10-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\u003eAdvanced BMS Protection\u003c\/h4\u003e\n\u003cp\u003eMulti-layer protection on both the battery and inverter for safe, reliable day-to-day operation.\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=\"nx10-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=\"nx10-narrative\"\u003e\n\u003ch3\u003eA Pre-Matched Pair, Built for Indoor Installation\u003c\/h3\u003e\n\u003cp\u003eRather than picking a battery and inverter separately and hoping they communicate well together, this system ships as one closed-loop pairing: the NEXUS battery and APEX-10K inverter are designed and sold to work with each other directly. The APEX-10K trades some of the smaller APEX-6.5K's flexibility for raw output — 10,000W continuous versus 6,500W — but its single AC input serves either grid or generator, not both at once, so plan around one backup source being connected at a time rather than both simultaneously.\u003c\/p\u003e\n\u003cp\u003eWorth knowing before installing: this is an indoor system on both sides. The NEXUS battery is IP54-rated and specified for indoor, floor-standing installation — not the outdoor\/all-weather rating some other BigBattery batteries carry — and the APEX-10K is IP20, also indoor-only. Plan for a garage, utility room, or dedicated power space rather than an outdoor enclosure. In exchange, the platform scales seriously: up to 15 NEXUS units can run in parallel for 214.5kWh of total storage, well beyond what a single unit provides.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- ============ SPECS ============ --\u003e\n\u003csection class=\"nx10-specs\"\u003e\n\u003ch3\u003eFull Specifications\u003c\/h3\u003e\n\u003cdiv class=\"nx10-specs-block\"\u003e\n\u003cp class=\"nx10-specs-block-title\"\u003eBattery — BigBattery NEXUS 14.3kWh (×1)\u003c\/p\u003e\n\u003cdiv class=\"nx10-spec-groups\"\u003e\n\u003cdiv class=\"nx10-spec-group\"\u003e\n\u003ch4\u003eCapacity\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSystem voltage\u003c\/td\u003e\n\u003ctd\u003e48 V\u003c\/td\u003e\n\u003c\/tr\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\u003eUsable energy\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\u003eCell configuration\u003c\/td\u003e\n\u003ctd\u003e16S1P\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nx10-spec-group\"\u003e\n\u003ch4\u003eCharging \u0026amp; Discharge\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous discharge current\u003c\/td\u003e\n\u003ctd\u003e140 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax continuous power\u003c\/td\u003e\n\u003ctd\u003e7.6 kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax discharge peak current\u003c\/td\u003e\n\u003ctd\u003e270A (1 sec)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax charge current\u003c\/td\u003e\n\u003ctd\u003e140 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharging voltage range\u003c\/td\u003e\n\u003ctd\u003e53.5–57.6 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nx10-spec-group\"\u003e\n\u003ch4\u003eEnvironmental\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCharge temp range\u003c\/td\u003e\n\u003ctd\u003e32–113°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDischarge temp range\u003c\/td\u003e\n\u003ctd\u003e-4–113°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptimal discharge temp\u003c\/td\u003e\n\u003ctd\u003e59–95°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity range\u003c\/td\u003e\n\u003ctd\u003e10–95%, no condensation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection rating\u003c\/td\u003e\n\u003ctd\u003eIP54, indoor floor-standing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nx10-spec-group\"\u003e\n\u003ch4\u003ePhysical \u0026amp; Other\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e~315 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (W×H×D)\u003c\/td\u003e\n\u003ctd\u003e19.7 × 27.5 × 15.7 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications\u003c\/td\u003e\n\u003ctd\u003eRS485, RJ45, CAN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax connections\u003c\/td\u003e\n\u003ctd\u003e15 parallel (214.5kWh)\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=\"nx10-specs-block\"\u003e\n\u003cp class=\"nx10-specs-block-title\"\u003eInverter — APEX-10K (×1)\u003c\/p\u003e\n\u003cdiv class=\"nx10-spec-groups\"\u003e\n\u003cdiv class=\"nx10-spec-group\"\u003e\n\u003ch4\u003eOutput\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated output power\u003c\/td\u003e\n\u003ctd\u003e10,000 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax output (surge)\u003c\/td\u003e\n\u003ctd\u003e20,000 VA\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\u003eMotor load capacity\u003c\/td\u003e\n\u003ctd\u003e6 HP\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitching time\u003c\/td\u003e\n\u003ctd\u003e10 ms (typ.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nx10-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 (1+1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax solar input power\u003c\/td\u003e\n\u003ctd\u003e5,000W + 5,500W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax solar charge current\u003c\/td\u003e\n\u003ctd\u003e200 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMPPT tracking efficiency\u003c\/td\u003e\n\u003ctd\u003e92%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nx10-spec-group\"\u003e\n\u003ch4\u003eAC Input \u0026amp; Bypass\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eAC input\u003c\/td\u003e\n\u003ctd\u003e1, grid or generator*\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBypass overload current\u003c\/td\u003e\n\u003ctd\u003e63 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePass-through capacity\u003c\/td\u003e\n\u003ctd\u003e80 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nx10-spec-group\"\u003e\n\u003ch4\u003ePhysical \u0026amp; Other\u003c\/h4\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e28.46 × 17.64 × 5.91 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e62 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\u003eParallel capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 6 units, 3-phase at 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\u003cp style=\"font-size: 12.5px; color: var(--muted) !important; margin-top: 18px !important;\"\u003e*Single AC input serves either grid or generator, not simultaneously. Certifications: UL1741, RoHS, FCC Part 15 Class B, IEC62109-1\/2.\u003c\/p\u003e\n\u003c\/section\u003e\n\u003c!-- ============ SCALABILITY ============ --\u003e\n\u003csection class=\"nx10-scale\"\u003e\n\u003ch3\u003eOther Configurations Available\u003c\/h3\u003e\n\u003cp\u003eThis same NEXUS and APEX-10K 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=\"nx10-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\u003e14.3 kWh\u003c\/td\u003e\n\u003ctd\u003e10 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\u003e10 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\u003e10 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×\u003c\/td\u003e\n\u003ctd\u003e28.6 kWh\u003c\/td\u003e\n\u003ctd\u003e20 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\u003e57.2 kWh\u003c\/td\u003e\n\u003ctd\u003e20 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\u003e85.8 kWh\u003c\/td\u003e\n\u003ctd\u003e20 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\u003e30 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=\"nx10-faq\"\u003e\n\u003ch3\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/Nexus-Key-Features-3-scaled-1-2048x841.webp?v=1785056644\" alt=\"Infographic showcasing the key features of the BigBattery NEXUS 48V 14.3kWh LiFePO4 Battery + APEX-10K Inverter Off-Grid Home Back-Up System—Performance, Protection, Design, Scalability, Chemistry, Applications—displayed beside a house with solar panels at dusk. The layout employs IBM Plex Sans for modern clarity and uses CSS variables to emphasize the advanced capabilities of this BigBattery system.\"\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/videoframe_6275.png?v=1785056659\" alt=\"A graph illustrates battery prices dropping from $830\/kWh in 2018 to $199\/kWh projected in 2025. To the right, BEST PRICE IN AMERICA appears prominently in bold IBM Plex Sans font. Nearby, the BigBattery NEXUS 48V 14.3kWh LiFePO4 Battery + APEX-10K Inverter | Off-Grid Home Back-Up System is showcased as a Low-Cost Leading Off-Grid LiFePO4 Battery—spotlighting its advanced Nexus 10k model and a modern interface designed with CSS variables for enhanced user experience.\"\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003c\/h3\u003e\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 BigBattery NEXUS 14.3kWh battery and one APEX-10K hybrid inverter, sold as a pre-matched closed-loop pair — 14.3kWh of storage and 10,000W of continuous output.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan this system be installed outdoors?\u003c\/summary\u003e\n\u003cp\u003eNo — both components are indoor-rated. The NEXUS battery is IP54 and specified as indoor floor-standing, and the APEX-10K inverter is IP20. Plan for a garage, utility room, or dedicated indoor power space.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan solar, grid, and a generator all connect at once?\u003c\/summary\u003e\n\u003cp\u003eSolar charges independently, but the APEX-10K has a single AC input shared between grid and generator, so it draws from one or the other, not both together. (The smaller APEX-6.5K has two separate AC inputs instead, allowing grid and generator to stay connected simultaneously.)\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 10,000W continuous (20,000VA surge) it comfortably covers most homes, including larger ones, 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\u003eCan I expand this system later?\u003c\/summary\u003e\n\u003cp\u003eYes — up to 15 NEXUS battery units can run in parallel for 214.5kWh of total capacity, and additional APEX-10K inverters can be paralleled up to 6 units (3+ forming a three-phase output) for more power.\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 NEXUS battery carries a 12-year manufacturer's warranty and the APEX-10K 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\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=\"nx10-downloads\"\u003e\n\u003ch3\u003eDocuments \u0026amp; Downloads\u003c\/h3\u003e\n\u003cdiv class=\"nx10-dl-block\"\u003e\n\u003cp class=\"nx10-dl-group-title\"\u003eBattery — BigBattery NEXUS\u003c\/p\u003e\n\u003cdiv class=\"nx10-download-list\"\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2025\/07\/Nexus-SpecSheet-july8.pdf\" class=\"nx10-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\/07\/NEXUS-User-Manual-1.3.2.pdf\" class=\"nx10-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\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"nx10-dl-block\"\u003e\n\u003cp class=\"nx10-dl-group-title\"\u003eInverter — APEX-10K\u003c\/p\u003e\n\u003cdiv class=\"nx10-download-list\"\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/bigbattery.com\/wp-content\/uploads\/2026\/02\/APEX-SpecSheet0202.pdf\" class=\"nx10-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\/12\/BigBattery-Apex-10k-User-Manual.docx-2.pdf\" class=\"nx10-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\/2026\/06\/Apex10KNexus-Quick-Start-Guide.pdf\" class=\"nx10-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\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c!-- ============ FOOTER ============ --\u003e\n\u003csection class=\"nx10-footer\"\u003e\n\u003cp class=\"nx10-warranty\"\u003eBattery backed by a \u003cstrong\u003e12-year manufacturer's warranty\u003c\/strong\u003e; inverter 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":"BigBattery","offers":[{"title":"Default Title","offer_id":42333720084535,"sku":"K0196","price":4725.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0566\/2418\/5399\/files\/Nexus-Apex-10K-scaled-2.webp?v=1785056698","url":"https:\/\/ecosolarkits.com\/products\/nexus-48v-14-3kwh-lifepo4-battery-apex-10k-inverter-off-grid-home-back-up-system","provider":"Eco Solar Kits","version":"1.0","type":"link"}