A free program for Android, by Sumi Apps Info.

Battery Charging Animation – Customize & Have Fun is an Android app that allows you to customize your phone’s screen to look cool during the charging process. This is accomplished by using a variety of different themes that all have a common background. When the screen is turned on, the app shows the current battery level and state of charge.

You can change the colors, and even add your own custom background. This is accomplished by choosing a theme, and then customizing the colors and background within the theme. You can use a variety of different backgrounds, including a photo, or any other image that you want. You can even add text to the background, and change the text colors and font style.

When the screen is turned off, the app shows the battery charge level, and battery state of charge.