Mobile Computing
Running the computer on battery power
Running the computer on battery power
The computer contains a removable lithium ion (Li-ion)
high-capacity battery that provides power when you are
away from an AC outlet. You can recharge it many times.
In addition, 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.
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 batteries with you. You can then
replace a discharged battery and continue working.
Battery safety precautions
Never try to disassemble a battery.
Never overcharge or reverse charge a battery.
Overcharging will shorten its life and reverse charging
could destroy it, causing the release of toxic fumes.
Avoid touching the metal terminals of the battery with
another metal object. Short-circuiting the battery will
cause it to overheat and may cause permanent
damage to the battery or the computer.
Never incinerate a spent battery as this will cause it to
explode, releasing toxic materials.
If a battery is leaking or damaged, replace it
immediately. Use protective gloves when handling a
damaged battery.
Part I: Getting to Know Your Computer
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