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Mobile Computing
Running the computer on battery power
5.375 x 8.375 ver 2.3.2
In addition to the removable lithium polymer main battery,
the computer has an internal real-time clock (RTC) battery.
This is a nickel metal hydride (NiMH) battery. The RTC
battery powers the RTC memory, which stores your system
configuration settings and the current time and date for up to
a month while the computer is turned off.
To increase the length of time you can run the computer on
battery power, you can connect a second battery to the
optional high-capacity battery connector on the base of the
computer.
Maximizing battery life
A battery can be recharged many times. Gradually over time
it will lose its ability to hold a charge. To maximize the life of
your main battery:
❖ Avoid leaving the computer plugged in and unused for
more than a few hours. Overcharging the main battery
may shorten its life.
❖ If you are not going to use the computer for a long time,
remove the main battery and the optional high-capacity
battery.
❖ Alternate between main battery packs if you have a spare.
❖ Make sure your computer is turned off, or in Hibernation
mode, when you are replacing the main battery.
❖ Store spare battery packs in a cool dry place out of direct
sunlight.
Using additional battery packs
If you spend a lot of time traveling and need to work for
many hours without an AC power source, you may want to
carry additional charged battery packs with you. You can then
replace a discharged battery and continue working.