Use APKPure App
Get HideBatteryLowAlert old version APK for Android
You will not get anymore the message to charge your battery
You will not get anymore the message to charge your battery (typically at a level of 13-30%).
IMPORTANT
This app has no user interface. Enable it in Xposed - reboot - done.
IMPORTANT
Your device has to be rooted to install the required X-posed framework: http://tinyurl.com/cd46qco