Full Battery Alarm for Xiaomi: Solutions
App Pinning / App Locking
To prevent Battery Charged Alarm from being cleared from the background:
Open the recent apps tray.
Drag Battery Charged Alarm downwards to lock it.
To unlock, drag it downwards again.
On some phones, long-press Battery Charged Alarm and select the padlock icon from the menu.
Autostart Permission
For MIUI 14:
Go to Settings > Apps > Battery Charged Alarm > App permissions > Background autostart.
Enable the background autostart permission for Battery Charged Alarm.
MIUI Optimizations
MIUI Optimizations have been reported on MIUI 12 and may be present on older versions. To access this option:
Switch to developer mode by tapping the MIUI version 10 times in the About phone section.
MIUI 12
Ensure the settings for Battery Charged Alarm allow it to run in the background.
MIUI 11
Adjust the settings for Battery Charged Alarm to ensure it can run in the background.
MIUI 10
Make sure your settings for Battery Charged Alarm allow it to run in the background, similar to the example settings for Sleep as Android.
Power Management
Enable the following settings:
Go to Settings > Advanced Settings > Battery Manager > Set Power plan to Performance.
Navigate to Device Settings > Advanced Settings > Battery Manager > Protected apps > Ensure Battery Charged Alarm is protected.
Go to Device Settings > Apps > Battery Charged Alarm > Battery > Enable Power-intensive prompt and Keep running after screen off.
Navigate to Settings > Additional Settings > Battery & Performance > Manage apps’ battery usage.
Switch Power Saving Modes to Off.
Choose the following options: Saving Power in The Background > Choose apps > Select Battery Charged Alarm > Background Settings > No restrictions.
App Battery Saver
Go to Security > Battery > App Battery Saver > Battery Charged Alarm > No restriction.