Calculator
Van Power Calculator
Add your devices and daily usage hours. We’ll calculate battery capacity, solar panel size, and budget recommendations for your van power system.
Your Devices
How to find wattage: Check the label on your device or its manual. Fridge 12V might be 40–60W. Heater could be 150–1000W. Laptop chargers are usually 60–100W. Multiply watts × hours/day to get daily consumption (Wh).