NOTE: HP recommends that you power off your HP iPAQ while using the USB charging feature. If your HP iPAQ is powered on, your device will consume more current than is being supplied by the USB charging and the main battery will not be charged. During this state, the charging LED will not light since it is not charging.
To enable USB charging:
1.From the Start menu, tap Settings > System tab > Power icon > USB Charging tab.
2.Select Use USB Charging.
For faster charging, turn off all wireless activity and place your HP iPAQ in standby mode by turning the unit off.
NOTE: The LED charging indicator does not light when the HP iPAQ is turned on and being charged with a USB connection.
To change the backlight settings in order to conserve more battery power:
1.From the Start menu, tap Settings > System tab > Backlight.
2.Select the following backlight tabs to change the settings:
•Battery Power
•AC Power
•Brightness
Battery Saving Tips:
•Set the backlight to go off quickly after you stop using your HP iPAQ, or move the slide bar to Power Save mode to turn off the backlight completely. You can also set the backlight to turn on when a button is pressed or when the screen is tapped.
•Turn off all wireless connections and Bluetooth when they are not being used.
Managing the Battery