Panasonic
Panasonic EverVolt 2.0
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Released 2021
Best Home Battery Backup · head-to-head
Panasonic EverVolt 2.0 vs Generac PWRcell 2 (M3, 9 kWh)
A sourced, side-by-side comparison. Panasonic EverVolt 2.0 is cheaper at —. Every spec and price links to its source.
Generac
Generac PWRcell 2 (M3, 9 kWh)
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Released 2024
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec |  Panasonic EverVolt 2.0 |  Generac PWRcell 2 (M3, 9 kWh) |
|---|---|---|
| US price | — | — |
| Brand | Panasonic | Generac |
| Released | 2021 | 2024 |
| Usable capacity (kWh) | 17.1 | 9 |
| Continuous power (kW) | 7.6 | 5.2 |
| Peak power (kW) | 9.6 | 15.6 |
| Battery chemistry | LFP | NMC |
| Round trip efficiency | — | 88 |
| Scalable stackable | Yes | Yes |
| Warranty years | 10 | 10 |
| Backup transfer time (ms) | — | 50 |
| Weight (lb) | — | 394.1 |
Sources — Panasonic EverVolt 2.0: na.panasonic.com (verified 2026-08-01). Generac PWRcell 2 (M3, 9 kWh): generac.com (verified 2026-08-01).
What's the difference between the Panasonic EverVolt 2.0 and Generac PWRcell 2 (M3, 9 kWh)?
Where the two actually differ on the specs we track (4 of 9). Matching specs are omitted.
- Usable capacity (kWh): Panasonic EverVolt 2.0 17.1 vs Generac PWRcell 2 (M3, 9 kWh) 9
- Continuous power (kW): Panasonic EverVolt 2.0 7.6 vs Generac PWRcell 2 (M3, 9 kWh) 5.2
- Peak power (kW): Panasonic EverVolt 2.0 9.6 vs Generac PWRcell 2 (M3, 9 kWh) 15.6
- Battery chemistry: Panasonic EverVolt 2.0 LFP vs Generac PWRcell 2 (M3, 9 kWh) NMC