Freeware and it looks like this:
"The BatteryBar is a Today screen extension that displays the battery status, amount of free memory and storage. An options dialog provides control over the bar's visual appearance.
Features:
Battery life time displayed as a percentage. Clicking this displays your Power settings.
Displays amount of free memory. Click to toggle between percentage and MB.
Displays amount of free storage. Click to toggle between percentage and MB.
You can access the options dialog through the Today applet. Select Start Menu -> Settings -> Today -> Items -> InsertCredit Battery Bar and then options."
http://www.unlockmymobile.com/insert...batterybar.zip
Enjoy,
Henk