For those practically minded, this application conveniently shows your battery life as a live wallpaper. As battery life goes down the bars will gradually disappear and the bars will start to change color. The color goes from green, to yellow, and finally to red indicating battery life is critical. The bars are accurate within 5% battery life. If you wish for more accuracy, then the text indicating the exact value of battery life should be turned on in the settings.
*Note: Some phones only display battery life in 10% increments.
battery live wallpaper life indicator background widget simple
Hosed my Droid 4 Really like the look of the wallpaper interface, but not the side effects of it monitoring my communications. It hosed my Droid's ability to text, email, even use the phone without lags and unresponsiveness! I wrote the author I'm willing to pay for a version that only monitors my battery and not my communications. Had to remove it Droid is fine now.