Press the Windows key, type "Command prompt" and press Shift + Enter to open Command Prompt as an admin
In the command prompt enter the following command:
powercfg /batteryreport
The battery report will be an HTML file that's stored in a folder on your PC. The file location will be shown in the Command Prompt window.
Open File Explorer, go to the folder that the report was saved to, and then double-click the battery report (HTML file) to open it in your web browser.