FranklinWH aPower 2
FranklinWH aPower 2 home battery: 15 kWh usable, 10 kW continuous. About $18,500 installed. Specs, surge, warranty and stacking.
All gear / FranklinWH aPower 2
FranklinWH
Fifteen kWh per box and a gateway that handles generators and whole-home backup. Stacks absurdly high.
Specifications
| Usable energy | 15 kWh |
|---|---|
| Continuous power | 10 kW |
| Surge | 44 kW (185 A locked-rotor start; 15 kW for 10 s) |
| Chemistry | LFP |
| Coupling | AC |
| Stacks up to | 15 units |
| Installed price | About $18,500 for the first, $12,000 each after |
| Warranty | 15 years or 60 MWh |
Source: FranklinWH datasheet; EnergySage 2026 pricing (first unit includes the aGate). Image: FranklinWH, via SunWatts.