This app is called Battery Charge Alarm. It's completely free, no ads.
It's only job is to play an alarm when your device charges up to (or discharges below) a configurable percentage. Changing up to 80%, and discharging above 30%, is recommended for prolonging the life of your battery.
Enjoy!
Latest Version
2.0.0Uploaded by
تحرير الحسيني البرزنجي
Requires Android
Android 6.0+
Category
Free Tools AppContent Rating
Everyone
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Flag as inappropriateLast updated on Oct 9, 2020
The app has been re-designed to use a foreground service to improve stability. Android Doze was prevent the alarm on certain Android versions.