http://www.cell9.net/wp-content/uplo...ttery-life.jpg
Platform: O.S 9.1-9.4
Features:

- Displays your current battery charge percentage.
- Shows how much time is left until the battery discharge.
- Shows the number of charge cycles and discharge the battery.
- Displays the date and time you want to put the phone on charge.

After 10 cycles u get good accuracy.