If you want to empty your phone’s battery to charge it from zero,
If you want to empty your phone’s battery to charge it from zero, or if you want to compare two batteries to see which one lasts longer.
Pro features,
1. Vibrating method.
2. Screen Light method.
3. Flash Light method.
4. Ten vibrating pasterns.
5. Add Free
PRO LINK: http://play.google.com/store/apps/details?id=com.droidblaster.zerobatterypro