BaBar (com.matsumo.babar) on Google Play
BaBar = Battery BarShow battery information uses bar.Bar color changes with remaining battery.80%～100%:blue60%～80%:green40%～60%:yellow20%～40%:orange 0%～20%:redCharging:pink* More Customizable (bar color, height ...) version available!! check "OniBaBar".