Battery Sizing

Estimate required battery capacity (Ah) based on voltage, load, runtime, and efficiency.

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

Results

Enter values and press Calculate.

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.