Home Battery System · Battery (LiFePO4)
Tesla Powerwall 3
The reference point every other home battery is measured against. Price shown is typical installed cost ($13,000-16,500 in 2026, roughly $9,300-11,500 hardware). One unit delivers 11.5kW continuous with a 185A locked-rotor start rating - enough to run and start central air - plus an integrated 6-MPPT solar inverter that eliminates a separate inverter purchase. LFP chemistry, 97.5% efficiency, 10-year warranty. In the quotes owners share, it usually comes in cheaper than a comparable Enphase or FranklinWH system. The complaints are real though: some owners describe long support delays, though one early owner says support improved through 2025, and quote quality varies enormously by installer. Expansion packs (13.5kWh, no inverter) bring a unit to 54kWh.
11,500 W · up to well pump or a small central AC
- capacity
- 13,500 Wh
- expands to
- 54,000 Wh
- Transfer switch
- transfer-switch ready
Best for Whole-home backup with solar where maximum power and lowest installed $/kWh win.