Nintendo Switch Lite Manual page 4

Controllers icon selected on the Nintendo Switch HOME Menu Screen
o The approximate battery charge for the console and any connected controllers will be
displayed within the Controllers screen.
The approximate battery charge displayed on the Nintendo Switch Controllers screen
The Console Has No Power, Has a Blank
Screen, or Won't Wake Up From Sleep Mode
Applies to: Nintendo Switch Lite, Nintendo Switch, Nintendo Switch Family
The information in this article can help you when:

A Nintendo Switch system will not power on.

The LCD screen is blank while in handheld mode or tabletop mode.

After placing the system in sleep mode, it will not wake up when the POWER or HOME
Buttons are pressed.