Best 240V Home Backup Batteries

Units that can start well pumps, dryers, and other 240V loads. Rankings update with the catalog — then size your load for a personal shortlist.

1. #1Explorer 5000 Plus$2,879

   5kWh · 7.2kW · 134.5 lb

   2 days
2. #2Explorer 5000 Plus + Smart Transfer Switch$3,799

   5kWh · 7.2kW · 134.5 lb

   2 days
3. #3Powerwall 3$15,000

   13.5kWh · 11.5kW · 287 lb

   5.3 days
4. #4DELTA Pro Ultra$4,099

   6.1kWh · 7.2kW · 186.4 lb

   2.4 days
5. #5DELTA Pro Ultra + Smart Home Panel 2$5,299

   6.1kWh · 7.2kW · 186.4 lb

   2.4 days
6. #6DELTA Pro Ultra + Extra Battery$5,999

   12.3kWh · 7.2kW · 293.6 lb

   4.8 days
7. #7AC500 + B300S$2,299

   3.1kWh · 5kW · 150 lb

   1.2 days
8. #8AC500 + B300S AC500 + 2× B300S$3,598

   6.1kWh · 5kW · 150 lb

   2.4 days
9. #9AC500 + B300S + Home Integration Kit$3,158

   3.1kWh · 5kW · 150 lb

   1.2 days
10. #10SOLIX F3800$1,699

    3.8kWh · 6kW · 132.3 lb

    1.5 days
11. #11SOLIX F3800 + Home Backup Kit$4,249

    7.7kWh · 6kW · 132.3 lb

    3 days
12. #12SOLIX F3800 + BP3800 + 400W Solar$4,099

    7.7kWh · 6kW · 132.3 lb

    3 days
13. #13DELTA Pro 3$3,199

    4.1kWh · 4kW · 113 lb

    1.6 days
14. #14DELTA Pro 3 + Extra Battery$4,699

    8.2kWh · 4kW · 113 lb

    3.2 days
15. #15SuperBase V6400$6,999

    6.4kWh · 3.8kW · 130 lb

    2.5 days

Transfer switches and panel interlocks must be installed by a licensed electrician.