Best Home Battery Backup · head-to-head

SolarEdge Home Battery 400V (10 kWh) vs Generac PWRcell 2 (M3, 9 kWh)

A sourced, side-by-side comparison. SolarEdge Home Battery 400V (10 kWh) is cheaper at —. Every spec and price links to its source.

Which is better: the SolarEdge Home Battery 400V (10 kWh) or Generac PWRcell 2 (M3, 9 kWh)?

The SolarEdge Home Battery 400V (10 kWh) 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 SolarEdge Home Battery 400V (10 kWh) Generac PWRcell 2 (M3, 9 kWh)
US price — —
BrandSolarEdgeGenerac
Released—2024
Usable capacity (kWh) 9.7 9
Continuous power (kW) 5 5.2
Peak power (kW) 7.5 15.6
Battery chemistry — NMC
Round trip efficiency 94.5 88
Scalable stackable Yes Yes
Warranty years 10 10
Backup transfer time (ms) — 50
Weight (lb) 238 394.1

Sources — SolarEdge Home Battery 400V (10 kWh): acsolarwarehouse.com (recorded 2026-08-01). Generac PWRcell 2 (M3, 9 kWh): generac.com (verified 2026-08-01).

What's the difference between the SolarEdge Home Battery 400V (10 kWh) and Generac PWRcell 2 (M3, 9 kWh)?

Where the two actually differ on the specs we track (5 of 9). Matching specs are omitted.

  • Usable capacity (kWh): SolarEdge Home Battery 400V (10 kWh) 9.7 vs Generac PWRcell 2 (M3, 9 kWh) 9
  • Continuous power (kW): SolarEdge Home Battery 400V (10 kWh) 5 vs Generac PWRcell 2 (M3, 9 kWh) 5.2
  • Peak power (kW): SolarEdge Home Battery 400V (10 kWh) 7.5 vs Generac PWRcell 2 (M3, 9 kWh) 15.6
  • Round trip efficiency: SolarEdge Home Battery 400V (10 kWh) 94.5 vs Generac PWRcell 2 (M3, 9 kWh) 88
  • Weight (lb): SolarEdge Home Battery 400V (10 kWh) 238 vs Generac PWRcell 2 (M3, 9 kWh) 394.1

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