isCharging is a tweak that will show an animation when your device is plugged in. It is themable themes are stored in var/mobile/ischarging.
This tweak does add settings in the settings app.
Release
0.0.1
0.0.2 - Added Bubble animation
0.0.3 - Added looping option, optimized code.
0.0.4 - Added option to hide default battery.