Why does the Xiaomi 14T Pro not charge after being charged to 80%?

The Xiaomi 14T Pro can stop charging after reaching 80% due to its battery protection mode, designed to extend the battery’s lifespan and optimize performance. In this mode, the phone limits charging to 80% to help prevent potential wear and tear. However, you have the option to switch to different charging modes. Regular charging allows the battery to charge up to 100%, while Optimized charging adjusts the charging process based on usage scenarios. Additionally, in smart battery protection mode, there's a feature called nighttime charging protection, which automatically adjusts the charging duration to minimize battery aging during overnight charging. By understanding these modes, you can choose the best option for your needs while ensuring the longevity of your device's battery.