If your laptop battery is indicating 100% charged but dies when unplugged, there could be various reasons behind it, such as a defective charger or failing battery. This article offers effective methods to resolve this issue on your Windows 11/10 laptop. The three methods discussed here are trying another charger, checking the Power Management Configuration (OEM based), and replacing the battery. It is recommended to calibrate your laptop battery occasionally to increase its life. If you are a Dell or Lenovo laptop user, check for the Peak Shift option and disable it if enabled. If the battery is faulty or failing, replace it immediately with an original battery from a hardware support store for better performance and safety. To check your laptop battery health, type powercfg /batteryreport in the Windows Terminal and open the HTML file generated to view the status and other factors.