Battery Runtime Calculator

Estimate how long a battery can power your device based on capacity (Ah), voltage (V), load power (W), inverter/UPS efficiency (%) and depth of discharge (DoD, %). Formula: Wh = Ah × V × η × DoD.

Battery capacity (Ah):

Battery voltage (V):

Device power (W):

Inverter/UPS efficiency (%):

Depth of discharge (DoD) (%):

Tips

Set realistic inverter efficiency (80–95%).
Use DoD recommended by the manufacturer to extend battery life.
Result is an estimate; real-world runtime may vary.