A free program for Android, by Mizuno.

Hachune Denchi is a widget application for smart phones that displays information regarding the amount of battery power left. It can be configured to show the application name on the notification bar of the smartphone.

It can be used by all Android devices that have been configured to run the app. You need to add the widget to your home screen to use the app.

The app does not require any special hardware or software to function. You can use the application on any smartphone with an Android operating system.