Use APKPure App
Get 3C Legacy Battery Stats old version APK for Android
Provides access to legacy battery statistics showing background activities
NO LONGER WORKS ON ANDROID 12 - WILL BE REMOVED FROM PLAY STORE
This app will automatically be used by 3C All-in-One Toolbox and 3C Battery Monitor Widget to show legacy battery statistics.
This app can no longer be updated since November 2019, because it would loose access to battery statistics.
3C Companion app (non-rooted users) available here.