Battery Sizing

Best for: sizing a simple DC battery requirement when you know your load and runtime target and want to account for conversion losses.

Inputs

System Voltage (V) Load Watts (W) Load Amps (A) Runtime (hours) Efficiency (%)

Documentation & Export

Export Report

Add optional project context and generate a clean documentation view that can be printed or saved as a PDF for client or internal use.

Report Title Project Name Client Name Prepared By Custom Notes

Back to Power & Runtime

Results

Enter values and press Calculate.

Model: if watts are entered, current is derived from voltage. If amps are entered, watts are derived from voltage. Efficiency accounts for inverter, converter, or discharge losses before final battery capacity is calculated.

Notes / Assumptions

If you enter Watts, amps are derived as: Amps = Watts ÷ Volts
If you enter Amps, watts are derived as: Watts = Volts × Amps
Efficiency accounts for inverter / driver losses and battery discharge inefficiency.