RV Battery Bank Sizing Calculator

RV Battery Bank Sizing Calculator

Planning for boondocking or reliable off-grid power in your RV, camper, or van? This calculator helps you estimate the right RV battery bank size (in Amp Hours) for your electrical needs. Accurately sizing your deep cycle battery bank, whether Lithium or Lead-Acid, is key to comfortable travel. Fill in your appliance usage and system details below.

Estimate Daily Appliance Usage:

Avg. Power (Watts) Hours / Day AC?
Please ensure Watts and Hours are valid numbers (0 or greater).
(Efficiency of converting DC battery power to AC for appliances)
Inverter efficiency must be between 50-100%.
(Affects usable capacity & longevity)
Please enter at least 1 day of autonomy.
Your estimated RV battery bank requirements will appear here. Fill in your details above.

Disclaimer: This RV battery bank calculator provides an estimate based on your inputs. Actual energy consumption can vary due to factors like ambient temperature (especially for refrigerators), device efficiency, phantom loads, inverter self-consumption, wire losses, and usage habits. This tool is for planning your camper battery or RV electrical system; always consult manufacturer specifications and consider a safety margin (e.g., 15-25% extra capacity).