Battery & Storage Sizing

Battery Capacity Calculator

Determine the total battery capacity in Amp-Hours (Ah) and Watt-Hours (Wh) needed to power your home, RV, or off-grid loads safely.

Load & Battery Settings

Specify total wattage, desired backup time, and chemistry parameters.

Total Continuous Load (Watts)

Desired Backup (Hours)

System Voltage

Battery Chemistry

Inverter Efficiency

Required Battery Capacity

412 Ah

At Selected System Voltage

Total Energy Needed: 4,938 Wh (4.94 kWh)

Raw Energy Demand: 4,000 Wh

Recommended 100Ah Batteries: 5 Units (In Parallel)