Pretty simple, really.
In recent months some Switch owners (notably with relatively new OLED models) have been highlighting issues with their system’s battery. An example of the problem would be the battery draining rapidly overnight when the console’s in sleep mode, or potentially having less stamina than normal during gameplay.
Nintendo’s official customer service department has now shared a set of steps (in Japanese), which are rather basic but worth following if your battery is draining unexpectedly. Below are the translated steps.
Read the full article on nintendolife.com