NMCWhole-home capablesold new in 2026
Generac PWRcell
A modular 9 to 18 kWh system tied to Generac's backup ecosystem, and one of the few mainstream home batteries still using NMC rather than LFP, which is a real safety and longevity trade for a unit bolted to your wall.
Best for: generator-brand backup ecosystem
Figure - Specs to scalebars vs the largest in our database
Specifications
- Chemistry
- NMC
- Usable capacity
- up to 18 kWh
- Continuous power
- 10.5 kW
- Peak power
- Not published
- Round-trip efficiency
- 88%
- Depth of discharge
- Not published
- Warranty
- 10 years or 7.56 MWh throughput per module
- Scalable to
- 9 to 18 kWh per cabinet; two cabinets reach 11.5 kW and up to 36 kWh
- Backup scope
- Whole-home capable
- Inverter
- Integrated
- Weight
- 443 lb
- Dimensions
- 23 x 10.75 x 70 in
Efficiency basis: system round trip. Round-trip numbers are only comparable across brands when measured the same way, so read the basis before comparing.
Source: Generac PWRcell 2 spec sheet, Jul 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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