How to calculate battery runtime (in hours)?

Battery Runtime

With the help of this calculator, you can estimate or calculate the battery runtime in hours. Means, how long the battery can provide power to your device.

How to use the calculator?

  • For this calculator, enter the battery capacity in mAh.
  • Know the device consumption and enter the value in mA.
  • Enter the consumption rate. If you do not know the consumption rate, enter the value as ‘0.7’.
  • The calculator would show automatically the calculated value.

How to calculate battery runtime (in hours)?

You can calculate the battery runtime with help of following formula:

Battery runtime = (Battery capacity in mAh / Load current consumption in mA) X Consumption rate

Example: Let us say you have 10000 mAh battery. The load is drawing 500 mA current. The battery runtime would be 14 hours considering consumption rate as 0.7.


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