Savant Power Storage 20
The Savant Power Storage 20 is a rare all in one 20 kWh battery with a genuinely powerful integrated 12.5 kW inverter and a strong 30 kW on-grid surge, making it well suited to whole home backup and high draw loads. Its 18 kWh usable figure is derived from the datasheet 20 kWh rated capacity at the published 90 percent recommended depth of discharge; it is a large, heavy, professionally installed system in the premium tier.
Specifications
- Chemistry
- LiFePO4
- Usable capacity
- 18 kWh
- Continuous power
- 12.5 kW
- Peak power
- 30 kW
- Round-trip efficiency
- 93.8%
- Depth of discharge
- 90%
- Warranty
- 10 years, warrantied to 73 MWh or 3,650 cycles, with an estimated 75 percent capacity retention at 10 years
- Scalable to
- Stacks up to 10 units for up to 125 kW and 200 kWh, supporting electrical services up to 800A
- Backup scope
- Whole-home capable
- Inverter
- Integrated
- Weight
- 600 lb
- Dimensions
- 85.4 x 25.6 x 13 in
Efficiency basis: Round trip efficiency per the Savant Power Storage 20 specification sheet. Round-trip numbers are only comparable across brands when measured the same way, so read the basis before comparing.
Source: Savant Power Storage 20 Specification Sheet (009-2477-00). Specs verified 2026-07-01. Figures are per single unit at beginning of life; confirm the current datasheet with your installer.
Specs do not tell you if it pays off.
Payback depends on your rate plan, usable capacity, and local incentives, not the brand on the box.
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