# aPower 2 vs PWRcell 2 (M3, 9 kWh): specs and price compared

A sourced, side-by-side comparison of the aPower 2 (FranklinWH) and PWRcell 2 (M3, 9 kWh) (Generac) among home battery backup.

## Side by side

| Spec | aPower 2 | PWRcell 2 (M3, 9 kWh) |
| --- | --- | --- |
| US price | not published | not published |
| Brand | FranklinWH | Generac |
| Released | 2024 | 2024 |
| Usable capacity kwh | 15 | 9 |
| Continuous power (kW) | 10 | 5.2 |
| Peak power (kW) | 15 | 15.6 |
| Battery chemistry | LFP | NMC |
| Round trip efficiency | 90 | 88 |
| Scalable stackable | Yes | Yes |
| Warranty years | 15 | 10 |
| Backup transfer time ms | — | 50 |
| Weight (lb) | 357 | 394.1 |

## Key differences

- Usable capacity kwh: aPower 2 15 vs PWRcell 2 (M3, 9 kWh) 9
- Continuous power (kW): aPower 2 10 vs PWRcell 2 (M3, 9 kWh) 5.2
- Peak power (kW): aPower 2 15 vs PWRcell 2 (M3, 9 kWh) 15.6
- Battery chemistry: aPower 2 LFP vs PWRcell 2 (M3, 9 kWh) NMC
- Round trip efficiency: aPower 2 90 vs PWRcell 2 (M3, 9 kWh) 88
- Warranty years: aPower 2 15 vs PWRcell 2 (M3, 9 kWh) 10
- Weight (lb): aPower 2 357 vs PWRcell 2 (M3, 9 kWh) 394.1

## Sources

- aPower 2: https://www.franklinwh.com/products/apower2-home-battery-backup/ (franklinwh.com, verified 2026-08-01)
- PWRcell 2 (M3, 9 kWh): https://www.generac.com/globalassets/residential/dealers--installers/generac-installer-programs/solar--battery-installer-support/pc2brochure_specguide.pdf (generac.com, verified 2026-08-01)

Canonical: https://frontdeskreview.com/gear/home-battery-backup/franklinwh-apower-2-vs-generac-pwrcell-2/
Cite: Per The Front Desk Review, aPower 2 (not published) vs PWRcell 2 (M3, 9 kWh) (not published) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/home-battery-backup/franklinwh-apower-2-vs-generac-pwrcell-2/
License: CC BY 4.0.