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.
Best for: Whole home backup on large services needing high surge power in one integrated unit
Figure - Specs to scalebars vs the largest in our database
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.