Tesla
Powerwall 3
$9200
Released 2023
Best Home Battery Backup · head-to-head
Powerwall 3 vs SOLIX X1 (15 kWh)
A sourced, side-by-side comparison. Powerwall 3 is cheaper at $9200. Every spec and price links to its source.
Anker
SOLIX X1 (15 kWh)
—
Released 2024
Which is better: the Powerwall 3 or SOLIX X1 (15 kWh)?
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 | SOLIX X1 (15 kWh) |
|---|---|---|
| US price | $9200 | — |
| Brand | Tesla | Anker |
| Released | 2023 | 2024 |
| Usable capacity kwh | 13.5 | 15 |
| Continuous power (kW) | 11.5 | 6 |
| Peak power (kW) | 22 | 12 |
| Battery chemistry | NMC | LiFePO4 (LFP) |
| Round trip efficiency | 97.5 | 90.2 |
| Scalable stackable | Yes | Yes |
| Warranty years | 10 | 10 |
| Backup transfer time ms | — | — |
| Weight (lb) | 287 | 389 |
Sources — Powerwall 3: thegreenwatt.com (verified 2026-08-01). SOLIX X1 (15 kWh): ankersolix.com (verified 2026-08-01).
What's the difference between the Powerwall 3 and SOLIX X1 (15 kWh)?
Where the two actually differ on the specs we track (6 of 9). Matching specs are omitted.
- Usable capacity kwh: Powerwall 3 13.5 vs SOLIX X1 (15 kWh) 15
- Continuous power (kW): Powerwall 3 11.5 vs SOLIX X1 (15 kWh) 6
- Peak power (kW): Powerwall 3 22 vs SOLIX X1 (15 kWh) 12
- Battery chemistry: Powerwall 3 NMC vs SOLIX X1 (15 kWh) LiFePO4 (LFP)
- Round trip efficiency: Powerwall 3 97.5 vs SOLIX X1 (15 kWh) 90.2
- Weight (lb): Powerwall 3 287 vs SOLIX X1 (15 kWh) 389