Better indicator is LVMTopBat. Freeware battery indicator that sits above the taskbar and has a graduated scale. If you are using a kitchen for WM6 then LVMTopBar from previous WM5 ROMs is a known working OEM package that you can just drag into the ROM folder and install as an option when building the OS. Otherwise google for it and install it as you would any other software.
http://www.freewareppc.com/utilities/lvmtopbat.shtml