How to Analyze Windows Battery Health

Step by step

1. 1 min

   Open Command Prompt as Administrator

   Click the Start button and type cmd. Right-click the Command Prompt icon in the search results and select Run as administrator. Confirm the User Account Control prompt by clicking Yes.

   Note: Win + R > cmd > Ctrl + Shift + Enter
2. 30 sec

   Execute the battery report command

   In the command window, type powercfg /batteryreport and press Enter. The system will process the data and generate an HTML file stored in your user profile folder, typically located at C:\Windows\System32\battery-report.html.

   Note: If you do not have permission to save to the System32 folder, use 'powercfg /batteryreport /output %USERPROFILE%\Desktop\battery-report.html' to save it to your desktop.
3. 30 sec

   Locate and open the report

   Navigate to the file path specified in the terminal output using File Explorer. Double-click the battery-report.html file to open it in your default web browser.

4. 1 min

   Review Design Capacity versus Full Charge Capacity

   Scroll down to the Installed Batteries section. Compare the Design Capacity (the capacity the battery held when new) with the Full Charge Capacity (the current maximum capacity). A significant discrepancy between these two values indicates chemical aging of the battery cells.

   Note: A Full Charge Capacity that is less than 50% of the Design Capacity suggests the battery is nearing the end of its functional life.
5. 1 min

   Evaluate the battery life history

   Review the Battery Life Estimates table at the bottom of the report. This section tracks how long the system has historically lasted on a full charge compared to its original specifications. Consistent downward trends in these figures confirm battery degradation.