Best Home Battery Backup · head-to-head

ESS Home 8 vs SOLIX X1 (15 kWh)

A sourced, side-by-side comparison. ESS Home 8 is cheaper at —. Every spec and price links to its source.

Which is better: the ESS Home 8 or SOLIX X1 (15 kWh)?

The ESS Home 8 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 ESS Home 8 SOLIX X1 (15 kWh)
US price
BrandLG ElectronicsAnker
Released2024
Usable capacity kwh 14.4 15
Continuous power (kW) 7.5 6
Peak power (kW) 9 12
Battery chemistry Li-ion (cylindrical cells) LiFePO4 (LFP)
Round trip efficiency 90 90.2
Scalable stackable Yes Yes
Warranty years 10 10
Backup transfer time ms 100
Weight (lb) 359 389

Sources — ESS Home 8: lg.com (verified 2026-08-01). SOLIX X1 (15 kWh): ankersolix.com (verified 2026-08-01).

What's the difference between the ESS Home 8 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: ESS Home 8 14.4 vs SOLIX X1 (15 kWh) 15
  • Continuous power (kW): ESS Home 8 7.5 vs SOLIX X1 (15 kWh) 6
  • Peak power (kW): ESS Home 8 9 vs SOLIX X1 (15 kWh) 12
  • Battery chemistry: ESS Home 8 Li-ion (cylindrical cells) vs SOLIX X1 (15 kWh) LiFePO4 (LFP)
  • Round trip efficiency: ESS Home 8 90 vs SOLIX X1 (15 kWh) 90.2
  • Weight (lb): ESS Home 8 359 vs SOLIX X1 (15 kWh) 389

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