About the calculator

The calculator will calculate the maximum time required to charge a battery, typically including efficiency loss, as no battery is 100% efficient. Efficiency decreases with use, age, stratification and sulphation. If efficiency loss is more than 40%, it is best to look into the charger or replace the battery. The calculator requires an input of Battery Capacity (mAh) and Charge Rate Current (mA) to determine the maximum charge time of a battery. If you have any questions or feedback on the calculator, feel free to drop us an email here.

Units of measurement

List of Units of Measurements (UOM) used in for the Battery Discharge Time Calculator:

  • milliAmp hour (mAh)
  • milliAmp (mA)
  • Hours

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