Battery Runtime Calculator

Battery Runtime & Sizing Tool

Select what you want to power in your campervan and how long you want to stay off-grid. We’ll estimate how long common battery sizes will last. All figures are guidance only.

1. What do you want to power?

Assumes compressor cycling ~45–60Ah/day.

2. How long do you want to stay off-grid?

3. Optional: How are you recharging?

Figures are estimates only. Real-world performance varies with temperature, battery age, charge sources, appliance efficiency and installation quality. Always size systems with margin and consider professional advice for complex systems.