Why is the charging speed of the Redmi Note 13 Pro+ 5G slow when the screen is off and on standby?

Charging speed can be influenced by several factors, including ambient temperature, background applications, fast charging settings, and the charger used.
To improve charging speed, please refer to the following methods:
1. Ensure you are using the standard 120W charger;
2. Verify that the [Boost charging speed] function is enabled in the settings;
Note:
To turn on the feature, please open the [Settings] APP >> [Battery] >> [Additional features] >> turn on [Boost charging speed].
3. Confirm that the charging environment temperature is not too high;
4. Make sure the phone is placed in a location that allows for proper heat dissipation;
5. Close any unnecessary background APPs on your phone;
6. Check if the phone is charging while in screen-off standby mode.
Note:
The charging speeds can vary slightly depending on the inspecting environment.