Battery Tips
Tip 1. Avoid excessive heat and cold
z
Your battery will last longer during the day if it is used, charged and stored between 50°F and 86°F (10°C and
30°C).
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Charge the battery nightly where the temperature will remain around 68°F (20°C). Your battery may not last
as long through the day if you charge it at higher or lower temperatures.
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Allow unrestricted airflow while the computer is connected to external power. Make sure that the fan inlet and
outlet are unobstructed.
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Avoid exposing batteries to hot or cold temperatures for long periods.
How your battery behaves in warm conditions
How your battery behaves in cold conditions
Tip 2. Prevent wasted power
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Manually turn off or suspend your computer whenever you are not using it.
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Reduce the screen brightness. Decrease brightness by pushing
Fn + Rotate
. Increase it by pushing
Fn +
Security
.
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Use the AC adapter or vehicle adapter whenever possible.
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Select either the
Portable/Laptop
or
Max Battery
power scheme. Both of these power schemes help to
conserve battery power.
Max Battery
provides the most battery conservation by always keeping the
processing speed lower. However, this may affect your application performance.
Portable/Laptop
automatically adjusts the processing speed as required by your applications.
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When running on battery power, make sure your system suspends automatically after a few minutes of
inactivity. PC Cards, radios, custom applications, or modified system settings may affect this.
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Remove PC Cards and unplug peripherals when you are not using them. They may draw power from the
system even when not in use.
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Avoid operating the fax/modem, or audio and video applications when using battery power. Operating a
fax/modem, video, or audio equipment increases the computer’s power requirements.
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Don't use screen savers as they draw excessive current, especially “3D” screen savers.
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Avoid or minimize using applications that keep the CPU busy a large percentage of the time. The following
will help you determine if your system is running such applications:
Identifying power wasting programs
What to do if applications are keeping the CPU busy
Tip 3. Calibrate your battery
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Over time, the accuracy of the Windows battery gas gauge may be affected by repeated charging and
Page 29 of 57
Duo-Touch II Help
2/28/2008
file://C:\Documents and Settings\harwoodm\Local Settings\Temp\~hh5E31.htm
