Battery Capacity Calculator

Calculate amp-hours and watt-hours needed from load and runtime.

Load Power

Required Runtime

hrs

System Voltage

Max Depth of Discharge

Inverter Efficiency

Temperature Derating

Tab to move between fields

Required Capacity

122 Ah

Required Capacity

5.8 kWh

Load Energy4,211 Wh

Battery Energy (with losses)5,848 Wh

How to Use This Calculator

Enter Load Power, Required Runtime, and System Voltage.
Set Max Depth of Discharge, Inverter Efficiency, and Temperature Derating.
Review Required Capacity (Ah) and Required Capacity (kWh).
Use Load Energy (Wh) and Battery Energy (with losses) (Wh) to inform your decision.

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