Sagem WA 3050, Owner'S Manual

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Similarly, do not attempt to recharge the coin-cell lithium
(backup) battery, disassemble it, or immerse it in water or
dispose of in fire. Replace only with the battery designated
for this product. Dispose of used batteries properly.
Caution
Do not leave the main battery in a fully
discharged state, especially if you are not using your
device for extended periods of time. You may lose data if
the backup battery becomes discharged.
You want your battery charge to last as long as possible,
especially when you are travelling. Under normal
conditions, you can get many hours of use from a full
charge. Refer to the following tips to help you get the most
from them:
Use external power whenever possible
Use the adapter to connect the WA 3050 to external power
whenever possible, especially when:
§
Establishing a remote connection (some modems use a
lot of power)
§
Using the backlight feature of the display
§
Connecting to a computer
§
Playing audio files for extended periods
Shorten auto-suspend time
While on battery power, the WA 3050 automatically
suspends operation if you have not touched the hardware
buttons or used the stylus for two minutes. Maximize
battery life by shortening this interval time (see
“Customizing system settings”).