ToolsVault
Off-Grid Mobile Solar Systems

RV & Van Life Solar Battery & MPPT Sizer

Calculate daily off-grid electrical consumption (Watt-hours), 12V/24V Lithium (LiFePO4) battery amp-hours (Ah), rooftop solar panel wattage, and Victron MPPT sizing.

Daily Electrical Consumption

Recommended Off-Grid Setup

Daily Energy Consumption
Total Watt-hours per 24 hours
1,800 Wh/day
Lithium (LiFePO4) Battery Bank
With 20% safety reserve (80% DoD)
300 Ah @ 12V
Required Rooftop Solar Array
Based on 4.5 peak sun hours
500W Solar PV
Pair a 500W solar array with an MPPT 100/30 or 100/50 charge controller to capture up to 30% more power in overcast weather than PWM controllers.