Select Search on the taskbar, type Command prompt, press and hold (or right-click) Command prompt, and then select Run as administrator > Yes.
At the command prompt, type powercfg /batteryreport, then press Enter.
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.
You can get a lot of detailed info about your battery usage and capacity. Some particular sections you might want to look at to get started include the following: Installed battery, Recent usage, and Battery usage.