How To Set Low Battery Ringtone -:
1) Firstly Install This app [Click Here]
2) After Download Above App in your Device, Now Open it Then Click on Settings.
3) Now Select The option of Low Battery Charge Options from there.
4) Then Select Low Battery Level of your choice when you want to be get notified, Select Repeat Interval, How often it would Repeat alarm, Select Vibration, Sound Mode, and Notification Ringtone.
5) After that, When your Device Will reach the Battery level you selected, it will ring your phone and you will be get notified that your Phone’s Battery is Low and you have to charge your Phone Now.