LFPWhole-home capablesold new in 2026
FranklinWH aPower 2
A 15 kWh LFP battery with one of the strongest warranties on the market (15 years or 60 MWh) and a 15 kW peak, built to carry heavy loads like AC through an outage.
Best for: whole-home backup with big surge loads
Figure - Specs to scalebars vs the largest in our database
Specifications
- Chemistry
- LFP
- Usable capacity
- 15 kWh
- Continuous power
- 10 kW
- Peak power
- 15 kW
- Round-trip efficiency
- 90%
- Depth of discharge
- Not published
- Warranty
- 15 years or 60 MWh throughput, whichever comes first
- Scalable to
- up to 15 units (225 kWh) per aGate
- Backup scope
- Whole-home capable
- Inverter
- Integrated
- Weight
- 357 lb
- Dimensions
- 45.2 x 29.5 x 11.8 in
Efficiency basis: grid to battery to load (AC round trip). Round-trip numbers are only comparable across brands when measured the same way, so read the basis before comparing.
Source: FranklinWH aPower 2 datasheet, Dec 2025. Specs verified 2026-07-01. Figures are per single unit at beginning of life; confirm the current datasheet with your installer.
Specs do not tell you if it pays off.
Payback depends on your rate plan, usable capacity, and local incentives, not the brand on the box.
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