Q:

How do you do a battery calibration on a computer?

A:

Quick Answer

To calibrate the battery on a Windows laptop, charge it to 100 percent, then change the power-saving settings to allow the battery to drain more efficiently. Five hours after the laptop enters hibernation, charge the laptop to maximum capacity, and revert the power-saving settings.

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Full Answer

  1. Charge the laptop

    Plug in the laptop, and allow it to charge fully. Once the battery is at 100 percent, leave it plugged in for an additional two hours so it can cool off.

  2. Turn off power-saving settings

    Turn off power-saving settings by clicking Start, then clicking Control Panel and System and Security. Under System and Security, click on Power Options, then click Change Plan Settings for the active plan. Change all the options under On Battery to Never, then click Change Advanced Power Settings. Make sure that the Critical Battery Action and Critical Battery Level settings under Battery are set to Hibernate and 5 percent respectively, then save all changes.

  3. Discharge the battery

    Unplug the laptop, and keep it on to discharge the battery. Once the battery is at 5 percent, the laptop enters hibernation. Leave the laptop in hibernation mode for a minimum of five hours.

  4. Charge the laptop

    Once the laptop is plugged in and charging, allow it to charge fully before disconnecting it again. The laptop is usable during this time, so revert the power-saving settings.

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