Sale has ended but you can still get this app.
Download Circle Battery Widget Now

Official Description

A simple little widget, customizable, which displays the remaining battery percentage in the form of a circle.

!!! Please add the widget manually before launching the application !!!

The different sizes of the widget are: 1x1, 2x1, 1x2, 2x2, 3x3 and 4x4 (useful for tablets).

Personalization starts by launching the application via the Launcher or by clicking on the widget.

If you use a task killer, please add the application to the exception list.