Tesla
Powerwall 3
$9200
Released 2023
Best Home Battery Backup · head-to-head
A sourced, side-by-side comparison. Powerwall 3 is cheaper at $9200. Every spec and price links to its source.
Tesla
$9200
Released 2023
Panasonic
—
Released 2021
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | | |
|---|---|---|
| US price | $9200 | — |
| Brand | Tesla | Panasonic |
| Released | 2023 | 2021 |
| Usable capacity kwh | 13.5 | 17.1 |
| Continuous power (kW) | 11.5 | 7.6 |
| Peak power (kW) | 22 | 9.6 |
| Battery chemistry | NMC | LFP |
| Round trip efficiency | 97.5 | — |
| Scalable stackable | Yes | Yes |
| Warranty years | 10 | 10 |
| Backup transfer time ms | — | — |
| Weight (lb) | 287 | — |
Sources — Powerwall 3: thegreenwatt.com (verified 2026-08-01). EverVolt 2.0: na.panasonic.com (verified 2026-08-01).
Where the two actually differ on the specs we track (4 of 9). Matching specs are omitted.