ASUS LiveWater

It’s possible to have both a cool live wallpaper and a tool which can show the level of the battery at the same time. This is exactly what the ASUS LiveWater is doing and, the good news is that it works on all the Android devices and not just the ASUS ones.
The basic idea is very simple. Besides the fact that it’s a live wallpaper that displays water and wildlife, it’s also used to show the battery level. The water level is tied to the battery, so when the battery goes does, so does the water. Similarly, the water will go up when you're charging the device.