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Battery Runtime

Estimate useful time from stored energy.

Live results

Estimated runtime
10.064 hours
Equivalent runtime
603.84 minutes

Adjust the circuit

Battery capacity
Battery nominal voltage
Load voltage
Average load current
Regulator efficiency
Usable battery capacity

Battery runtime

10.064 hours estimated
100% remaining0 h elapsed

Drag to move through a charge · constant-load estimate

All calculated values

Live results

Estimated runtime
10.064 hours
Equivalent runtime
603.84 minutes
Nominal stored energy
7.4 Wh
Load power
0.5 W
Formula and assumptionshours = (Ah × Vbattery × usable fraction × efficiency) / (Vload × Aload)

Constant average load at its stated voltage. Capacity is rated at the battery voltage. For no regulator, use the same input/load voltage and 100% efficiency. This is an energy estimate, not a guarantee: temperature, aging, cutoff voltage, peak loads and discharge rate matter.