Tesla Powerwall 3 vs LG Energy Solution Home 8
A straight, side by side read on specs and warranties, with the honest caveats. Every figure is from the manufacturer datasheet; sources are at the bottom.
Figure - Specs to scalebars vs the largest in our database
| Spec | Tesla Powerwall 3 | LG Energy Solution Home 8 |
|---|---|---|
| Chemistry | Not published | Not published |
| Usable capacity | 13.5 kWh | 14.4 kWh |
| Continuous power | 11.5 kW | 7.5 kW |
| Peak power | Not published | 9 kW |
| Round-trip efficiency | 89% | 90% |
| Warranty | 10 years | 10 years, 70 percent capacity retained (5 yr standard plus 5 yr with ThinQ registration) |
| Backup scope | Whole-home capable | Whole-home capable |
| Inverter | Integrated | Integrated |
What actually differs
- More usable capacity: the LG Energy Solution Home 8 offers 14.4 kWh vs 13.5 kWh, so at that size it carries more of your home for longer per charge.
- More continuous power: the Tesla Powerwall 3 sustains 11.5 kW vs 7.5 kW, which matters for running big loads like an AC at once.
- Efficiency is not apples to apples here: the Tesla Powerwall 3 quotes 89% (solar round trip (solar to battery to home), CEC weighted; not a pure AC to AC figure) and the LG Energy Solution Home 8 quotes 90% (datasheet states over 90 percent), so do not read the raw numbers as a direct ranking.
Which one pays off is a numbers question.
Neither spec sheet tells you the payback in your home. That comes from your rate plan and incentives.
Run the Worth It calculator →Sources
Source: Tesla Powerwall 3 datasheet, 2026. Specs verified 2026-07-01. Figures are per single unit at beginning of life; confirm the current datasheet with your installer.
Source: LG Home 8 official spec page (RA768K16A11), 2026. Specs verified 2026-07-01. Figures are per single unit at beginning of life; confirm the current datasheet with your installer.