Display battery information and estimation time. Also, notify when battery is consumed too fast.

Major features are
Show battery status
Show battery status (Level, Temperature(Cellcius, Farenheit), Voltage...)
Notify when batter is consumed too fast
Notify using "Toast" message periodically
Battery usage history graph
SD card usage (2x1 widget only)
Customizable color & background
1x1, 2x1 widget, notification bar support
etc...

As the main design concept is to consume battery power for monitoring as less as possible, estimation time & graph data are not collect real time.

You can taste lite version [Battery Widget] before purchasing.