Battery & Solar Calculator
Work out how long your leisure battery will last and how much solar you need to keep up. Add your appliances, set your battery, and see results instantly.
Sponsored
Battery
80%
Use ~50% for lead-acid, ~80–90% for lithium.
Solar
Appliances
Results
Daily usage
665 Wh
Usable battery
960 Wh
of 1,200 Wh total
Runtime (no solar)
1.4 days
35 hours
Solar harvest
600 Wh/day
-65 deficit
Daily usage vs usable capacity69%
Recharge from empty
6.4 sun-hours
At 75% real-world solar efficiency
Recommended solar
230 W
To break even on a typical day