4 systems · every spec sourced
Whole-home battery backup
Installed home batteries that back up your panel when the grid goes down. These are wired in by a licensed electrician, so the number that matters most, installed cost, depends on your home. Here we compare the published capacity, output, and chemistry.
Home battery systems

EcoFlow
EcoFlow DELTA Pro Ultra
- Capacity
- 6.14 kWh
- Output
- 7,200 W
Tesla
Tesla Powerwall 3
- Capacity
- 13.5 kWh
- Output
- 11,500 W
FranklinWH
FranklinWH aPower
- Capacity
- 13.6 kWh
- Output
- 5,000 W
Generac
Generac PWRcell 2
- Capacity
- 18 kWh
- Output
- 10,000 W
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