Boondocking Power Calculator
Size your battery bank and solar panel array for off-grid RV camping. Calculates amp-hours, solar wattage, and estimated system cost.
Inputs
kWh
hrs
days
Results
Battery Bank Size
938 Ah
Solar Array Size
750 W
200W Panels Needed4
Estimated System Cost$2,307
Daily Energy Surplus0.2 kWh
How to Use This Calculator
- Enter your estimated daily energy usage (Ah) by totaling major loads (fridge, lights, fans, devices).
- Set peak sun hours for your camping location (4-6 hrs for most of the US, less in cloudy regions).
- Enter days off-grid between charges and select battery type (lead-acid or lithium).
- Review required battery bank size (Ah) and solar panel capacity (W) to sustain your usage.
- Add a 20-25% safety margin to battery capacity to avoid deep discharge and extend battery life.
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