EG4 Batteries

EG4 Batteries: Single 280Ah Modules or a Matched PowerPro System

EG4 batteries are 48V LiFePO4 packs built for home and cabin energy storage, not for a trunk or a tent. The core unit in this collection is the EG4 PowerPro 280Ah All-Weather, a 14.3kWh battery in an IP65 enclosure that can be mounted outdoors, and the rest of the lineup is that same battery bundled with EG4 12000XP V2 hybrid inverters into closed-loop systems. So the first decision is simple: do you need the battery alone, or the whole system with inverters included?

Five products sit here, all EG4. The standalone EG4 PowerPro 48V 14.3kWh 280Ah LiFePO4 Battery starts at from $3,124. The systems run from a one-inverter, two-battery 28.6kWh package at from $8,685 to a three-inverter, six-battery 85.8kWh three-phase system at from $26,415.

How to choose solar batteries from EG4

• Battery only or full system. If you already run a compatible EG4 or BigBattery inverter, the 280Ah battery is the add-on. It delivers 200A continuous discharge, self-heats in cold weather and carries a 10-year manufacturer warranty. If you are starting from scratch, a PowerPro system saves you from matching inverter and battery communication yourself.
• Kilowatt-hours. One 280Ah module is 14.3kWh. The EG4 PowerPro 12kW 28.7kWh 48V Battery Backup pairs two modules with one inverter; the EG4 PowerPro 12kW 43kWh 48V Off-Grid System adds a third, which is the most one 12000XP V2 supports.
• Inverter output. Each 12000XP V2 supplies 12kW continuous. A typical full-size home is fine on one. Workshops with three-phase equipment or very large properties move to the EG4 PowerPro 36kW 85.8kWh 48V LiFePO4 Solar Power System with three inverters.
• Indoor or outdoor. The IP65 rating on the 280Ah means the battery can live on an exterior wall. That frees up garage space and shortens the run to a ground-mount array.

Popular picks in this collection

Sizing tips

• Run the Solar Kit Calculator with your appliance list and ZIP code. It returns battery, inverter and panel targets; compare its kWh figure against the 14.3kWh module count.
• Plan for two days of autonomy if you are truly off grid. A home using 15kWh a day wants the 28.6kWh system at minimum, and the 42.9kWh system in cloudy regions.
• Match discharge current to your loads. At 200A continuous, one 280Ah module supports roughly 10kW on its own; two modules comfortably feed a 12kW inverter.
• Outdoor mounting is allowed, but shade the enclosure and keep it off the ground. The self-heating handles cold; it does not handle standing water.
• The older EG4 PowerPro 12kW 14.3kWh 48V System with a single battery is sold out. If you want that size, buy the 280Ah battery and pair it with an inverter from our EG4 inverter collection.

Frequently asked questions

Can I mix these with other eg4 solar kit components? Yes. The 280Ah battery is built to pair with compatible EG4 and BigBattery inverters, and the PowerPro systems arrive pre-matched so communication between inverter and battery works out of the box.

How long do EG4 lithium batteries last? The 280Ah All-Weather is rated for more than 8,000 cycles and carries a 10-year warranty. Cycled once a day, that is over two decades of use.

Are these solar batteries for sale as grid-tied or off-grid? The PowerPro systems here are configured as off-grid closed-loop packages. The 12000XP V2 is a hybrid inverter, so ask us about grid-connected use before ordering.

All EG4 batteries ship free to the mainland US from brand partner warehouses, usually within a few business days, with 30-day returns. Call and we will help you settle on module count.