# PWRcell 2 (M3, 9 kWh) vs SOLIX X1 (15 kWh): specs and price compared

A sourced, side-by-side comparison of the PWRcell 2 (M3, 9 kWh) (Generac) and SOLIX X1 (15 kWh) (Anker) among home battery backup.

## Side by side

| Spec | PWRcell 2 (M3, 9 kWh) | SOLIX X1 (15 kWh) |
| --- | --- | --- |
| US price | not published | not published |
| Brand | Generac | Anker |
| Released | 2024 | 2024 |
| Usable capacity kwh | 9 | 15 |
| Continuous power (kW) | 5.2 | 6 |
| Peak power (kW) | 15.6 | 12 |
| Battery chemistry | NMC | LiFePO4 (LFP) |
| Round trip efficiency | 88 | 90.2 |
| Scalable stackable | Yes | Yes |
| Warranty years | 10 | 10 |
| Backup transfer time ms | 50 | — |
| Weight (lb) | 394.1 | 389 |

## Key differences

- Usable capacity kwh: PWRcell 2 (M3, 9 kWh) 9 vs SOLIX X1 (15 kWh) 15
- Continuous power (kW): PWRcell 2 (M3, 9 kWh) 5.2 vs SOLIX X1 (15 kWh) 6
- Peak power (kW): PWRcell 2 (M3, 9 kWh) 15.6 vs SOLIX X1 (15 kWh) 12
- Battery chemistry: PWRcell 2 (M3, 9 kWh) NMC vs SOLIX X1 (15 kWh) LiFePO4 (LFP)
- Round trip efficiency: PWRcell 2 (M3, 9 kWh) 88 vs SOLIX X1 (15 kWh) 90.2
- Weight (lb): PWRcell 2 (M3, 9 kWh) 394.1 vs SOLIX X1 (15 kWh) 389

## Sources

- PWRcell 2 (M3, 9 kWh): https://www.generac.com/globalassets/residential/dealers--installers/generac-installer-programs/solar--battery-installer-support/pc2brochure_specguide.pdf (generac.com, verified 2026-08-01)
- SOLIX X1 (15 kWh): https://www.ankersolix.com/x1-energy-storage-system-hes (ankersolix.com, verified 2026-08-01)

Canonical: https://frontdeskreview.com/gear/home-battery-backup/generac-pwrcell-2-vs-anker-solix-x1/
Cite: Per The Front Desk Review, PWRcell 2 (M3, 9 kWh) (not published) vs SOLIX X1 (15 kWh) (not published) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/home-battery-backup/generac-pwrcell-2-vs-anker-solix-x1/
License: CC BY 4.0.