Battery Level Gray version 1.2.03 is now available for download. See
the status of your battery in an icon in the status area. The
battery status is kept updated until you stop it (or the Android OS
needs more storage). If inserted as an app widget on the home page, the
application will start when the device is turned on. The percentages at
which the status icon changes and the percentage at which a battery low
notification is displayed can be changed through the application's
Version 1.2.03 puts the charging status and level in the notification
description, prevents a battery status change from cancelling a preference dialog, and uses redesigned graphics.
A user manual is available here under "Apps".