Battery Circle : An android apps to view your battery status in fraction of one in notification area Using battery circle android apps you can view your battery status in notification area as a circle that also show you the remaining battery status in the fraction of one. Most of the android mobile not providing the exact battery status in settings ( Battery manager) , they will show either in the percentage of 10 or 5 so that you can not detect your battery usage exactly . Using battery circle you can view the status in exact 1% fractions , as 99, 98, etc. This apps consumes very less power during run so it will not affect your battery life.
For more details see this link – Battery Circle
If you want to save your android mobile battery see this post – How to save Android battery maximum- A best guide ever