8
Working with the Unit and the Battery
Battery life:
The Lithium-Ion (Li-Ion) battery life is dependent
upon the application and operating environment. Repeated usage
of the keypad and display backlight, heavy usage of the 802.11
(Wireless LAN or WLAN), cold temperatures, GPS, and high
power consumption CF and SD devices can all reduce the battery
life. Other factors that may have some impact on battery life
include heavy usage of the Bluetooth radio and heavy processing
by the CPU, but these factors are typically less significant.
Tips for extending the battery life:
- Keypad backlight:
The default is off. Using this backlight
could reduce your battery life by up to 25%. For information
on changing the backlight settings, see page 17.
- Display backlight:
The default is on, at 65% of full brightness
Minimize the amount of time the backlight stays on when
idle. Dim the backlight to only as bright as required to view
the display.
-
802.11
: If your unit comes with 802.11 (WLAN) installed, use
ONLY when necessary. Turn off when not needed.
-
Cold temperatures
: Keep the unit as warm as possible. If
feasible, keep it inside your coat or a vehicle when not in use.
- GPS
: Ensure that the GPS-aware applications that
communicate with the GPS are closed when not in use. The
Today screen indicates if the GPS is running.
-
Expansion ports
: Select low-power consumption CF and SD
cards and use them only when necessary.
-
Auto features
: Tap
Start / Settings / System / Power /
Advanced.
To conserve battery power, specify your unit to
turn off in a short time if not in use.
Charging the battery:
The battery can be charged in the unit or
separate from the unit with an external battery charger (sold
separately, as an accessory). Connect the appropriate AC plug to
the AC adapter. Plug into an electrical outlet and plug the barrel
end of the AC adapter into the unit. The unit will be fully charged
in about 4.5 hours. A full charge is indicated by the battery LED
(right side of the unit) turning green. The manufacturer
