Shut down or reboot your Windows Mobile 2003 / WM 5.0 / WM6 Pocket PC XP style, powerdown your screen saving battery power while allowing applications to continue running.
Battery button calculates how much battery time you have left based on current power consumption, for example one can see how much time is left with the screen on varying levels of brightness, wireless on or off etc. Also displays charge/discharge rates and temperature.
