Easily test your Windows 10 or Windows 11 laptop's battery with a simple command using the built-in Microsoft Windows Powershell!
- Open the Windows PowerShell by right-clicking on the Start menu icon and selecting "Windows PowerShell (Admin)" from the menu that appears.
- A pop-up window may ask for permission to make changes to your device; say yes.
- The blue PowerShell command window will appear.
- In the window that opens up, enter:
powercfg /batteryreport /output "C:\battery-report.html"
- Press Enter to run the command.
- PowerShell will then tell you the name of the generated battery life report HTML file and where it has been saved on your computer.
- It should be located at the root of your C:\ drive.
- You can now close the PowerShell window.
- Next, open File Explorer and access the C: drive.
- There, you should find the battery life report saved as an HTML file called, "battery-report.html"
- Double-click the file to open it in your default web browser.
- In the report, find the Design Capacity and Full Charge Capacity of your laptop's battery.
- Now, using a calculator on your phone or your computer, divide the Full Charge Capacity by the Design Capacity amounts.
- If the result on your calculator is 0.80 or less, it may be time to replace your battery!
