Enphase Energy
IQ Battery 5P
—
Released 2023
Best Home Battery Backup · head-to-head
IQ Battery 5P vs PWRcell 2 (M3, 9 kWh)
A sourced, side-by-side comparison. IQ Battery 5P is cheaper at —. Every spec and price links to its source.
Generac
PWRcell 2 (M3, 9 kWh)
—
Released 2024
Which is better: the IQ Battery 5P or PWRcell 2 (M3, 9 kWh)?
The IQ Battery 5P wins 1 of the 1 specs we compare head to head; the other wins 0.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | IQ Battery 5P | PWRcell 2 (M3, 9 kWh) |
|---|---|---|
| US price | — | — |
| Brand | Enphase Energy | Generac |
| Released | 2023 | 2024 |
| Usable capacity kwh | 5 | 9 |
| Continuous power (kW) | 3.84 | 5.2 |
| Peak power (kW) | 7.68 | 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) | 174 | 394.1 |
Sources — IQ Battery 5P: enphase.com (verified 2026-08-01). PWRcell 2 (M3, 9 kWh): generac.com (verified 2026-08-01).
What's the difference between the IQ Battery 5P and PWRcell 2 (M3, 9 kWh)?
Where the two actually differ on the specs we track (7 of 9). Matching specs are omitted.
- Usable capacity kwh: IQ Battery 5P 5 vs PWRcell 2 (M3, 9 kWh) 9
- Continuous power (kW): IQ Battery 5P 3.84 vs PWRcell 2 (M3, 9 kWh) 5.2
- Peak power (kW): IQ Battery 5P 7.68 vs PWRcell 2 (M3, 9 kWh) 15.6
- Battery chemistry: IQ Battery 5P LFP vs PWRcell 2 (M3, 9 kWh) NMC
- Round trip efficiency: IQ Battery 5P 90 vs PWRcell 2 (M3, 9 kWh) 88
- Warranty years: IQ Battery 5P 15 vs PWRcell 2 (M3, 9 kWh) 10
- Weight (lb): IQ Battery 5P 174 vs PWRcell 2 (M3, 9 kWh) 394.1