Tesla
Powerwall 3
$9200
Released 2023
Best Home Battery Backup · head-to-head
Powerwall 3 vs aPower 2
A sourced, side-by-side comparison. Powerwall 3 is cheaper at $9200. Every spec and price links to its source.
FranklinWH
aPower 2
—
Released 2024
Which is better: the Powerwall 3 or aPower 2?
The Powerwall 3 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 | Powerwall 3 | aPower 2 |
|---|---|---|
| US price | $9200 | — |
| Brand | Tesla | FranklinWH |
| Released | 2023 | 2024 |
| Usable capacity kwh | 13.5 | 15 |
| Continuous power (kW) | 11.5 | 10 |
| Peak power (kW) | 22 | 15 |
| Battery chemistry | NMC | LFP |
| Round trip efficiency | 97.5 | 90 |
| Scalable stackable | Yes | Yes |
| Warranty years | 10 | 15 |
| Backup transfer time ms | — | — |
| Weight (lb) | 287 | 357 |
Sources — Powerwall 3: thegreenwatt.com (verified 2026-08-01). aPower 2: franklinwh.com (verified 2026-08-01).
What's the difference between the Powerwall 3 and aPower 2?
Where the two actually differ on the specs we track (7 of 9). Matching specs are omitted.
- Usable capacity kwh: Powerwall 3 13.5 vs aPower 2 15
- Continuous power (kW): Powerwall 3 11.5 vs aPower 2 10
- Peak power (kW): Powerwall 3 22 vs aPower 2 15
- Battery chemistry: Powerwall 3 NMC vs aPower 2 LFP
- Round trip efficiency: Powerwall 3 97.5 vs aPower 2 90
- Warranty years: Powerwall 3 10 vs aPower 2 15
- Weight (lb): Powerwall 3 287 vs aPower 2 357