powercfg /energy /duration 5 (This logs activity for 5 seconds; adjust as needed)

Once you know your real charging wattage, you can confirm whether your laptop is charging at full speed or if it’s time to replace that old charger.

powercfg /batteryreport Windows saves the report to C:\Windows\System32\battery-report.html . Open File Explorer and navigate there.

Type:

Go to Settings > Bluetooth & devices > USB (or USB & other devices ).

Type the following command and press Enter :

Run the .exe file.