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HP Customer Support - Knowledge Base

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HP Notebook PCs - Testing and Calibrating the Battery (Windows)

This document is for HP and Compaq Notebook PCs with Windows 10, Windows 8, or Windows 7.
The maximum capacity of a battery changes over time. 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, use the steps in this article to 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.
note:
Depending on which version of Windows or Diagnostics you are using, the information and graphics in this document might vary slightly.

Battery Warranties

In HP notebooks, standard and long-life batteries are covered under separate warranties from the notebook without exception. While the battery warranty might match the duration of the notebook warranty, they are in fact two separate warranties.

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