Android: Battery Widget Reborn is one of the nicest-looking battery apps available for Android devices, with a clever circle battery meter and Holo Theme interface. But it doesn't just look good — the app delivers on essential battery stats and system information.
In addition to the resizable widget, Battery Widget Reborn offers battery usage stats, such as how long it takes to fully charge and how long your battery typically lasts. It also gives you an estimate of when your battery will be empty, how much battery is being used by individual apps and quick power settings.
It even comes with an auto flight mode to save battery at night and is highly customisable.
Currently in beta, the app is free and works on Android 2.3 and up. After the beta ends in a couple of weeks, there will be both a "Freemium Lite" and a Pro version.
Basically, if you want to keep an eye on your Android battery life, download this app, because it's a pleasure to use.