A free program for Android, by miyaware.

Battery Clock is a simple clock application for Android phones and tablets that shows the current time and date and informs the user of the battery level. It is a very simple and easy-to-use application. It does not require any special hardware or software to work.

The application will not sleep when the phone is inactive. It will display the current time and date even if the phone is turned off. It will display the battery level and the battery charge level. It will display the current date and time in different formats. It has a number of different settings, which allow the user to change the display format, the font size, the color, and the background color.