Battery life has been impressive so far, averaging 3.5 hours when not using wireless (brightness set one notch below highest). Even intensive games don't rapidly drain the battery. Bluetooth is always fairly battery friendly, but WiFi is not. Despite that, the iPAQ achieved about 2 hours when using WiFi. I used the iPAQ with the WiFi radio set to auto power savings, and there are also options to always use power savings ("Extended") or never use it ("Off"). These settings are found in the Power control panel applet, under the "Control" tab.
