Energy Bar is an app that puts a colorful bar at the top part of your screen to indicate your battery status at all times. The setup options let you set how wide you want the battery icon to be and color nomenclature. This means when your bar is bright green you know your battery is full, and when it starts turning orange it's running low.
This bar stays at the front by default, though in the setup options you can deactivate it for certain apps so that, for instance, while you're playing a video game you won't see it, but as soon as you go back to your home screen it'll show back up.
Energy Bar is a simple, lightweight app that uses hardly any RAM and lets you keep your Android battery status in view at all times.
