In Windows 10 Battery Icon Missing. Restore Missing Battery Icon Using Settings. Check if the battery icon behavior has been changed.

Right click on the taskbar and select Settings. Select Start Settings Personalization Taskbar and then scroll down to the notification areaChoose Select which icons appear on the taskbar and then turn on the Power toggle. Using Power Slider you can change the power mode level and set the laptop to battery saver mode easily.
If you are not able to find the battery icon on the taskbar then.
In the Taskbar settings scroll down to the Notification area and choose Select which icons appear on the taskbar. Your battery icon should appear again. Select Start Settings Personalization Taskbar and then scroll down to the notification areaChoose Select which icons appear on the taskbar and then turn on the Power toggle. If you are not able to find the battery icon on the taskbar then.
