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HP Notebook PCs - Testing and calibrating the battery (Windows)

The capacity of a battery changes over time. To know the condition of your battery, test and calibrate your battery if necessary.

Because of this change in battery capacity, the charge level indicator in Windows might not show 100% charged. To know the condition of your battery, test your battery and calibrate it if necessary. Calibrating the battery resets the battery gauge to accurately display the charge level in Windows. In this document, two methods of testing and calibrating the battery are explained. Also, a manual method for calibrating the battery is presented.

If you notice that your notebook battery is swollen or deformed, go to HP Notebook PCs - Swelling or deformation of notebook battery for more information.