EG4 batteries in this collection are big 48V LiFePO4 systems, including PowerPro packages at 28.7kWh, 43kWh, and 85.8kWh, from $3,124. The PowerPro models are listed with 12kW and 36kW ratings, so they suit homeowners wanting substantial backup. Buyers should first estimate their daily kWh use and the critical loads they must power during outages. Larger sizes cost more but give longer coverage with solar recharging. Compare the listings below, and email us if you want help determining the right capacity.
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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.
| Product | Key numbers | Best for | Price from |
|---|---|---|---|
| EG4 PowerPro 48V 14.3kWh 280Ah Battery | 14.3kWh, 200A continuous, IP65, 8,000+ cycles | Expanding an existing EG4 system | $3,124 |
| EG4 PowerPro 12kW 28.7kWh System | 12kW continuous, 28.6kWh, 1 inverter, 2 batteries | Full-size home or cabin off-grid | $8,685 |
| EG4 PowerPro 12kW 43kWh System | 12kW, 42.9kWh, 1 inverter, 3 batteries | Extended autonomy on one inverter | $12,177 |
| EG4 PowerPro 36kW 85.8kWh System | 36kW three-phase, 85.8kWh, 3 inverters, 6 batteries | Large homes and workshops | $26,415 |
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.
