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Mobile Computing
Running the computer on battery power
5.375 x 8.375 ver 2.3
Running the computer on battery power
The computer contains a removable Lithium-Ion (Li-Ion)
battery pack that provides power when you are away from an
AC outlet. This is the main battery. You can recharge it many
times.
Battery Notice
To ensure that the battery maintains its maximum capacity,
operate the computer on battery power at least once a month
until the battery is fully discharged. Please see “Maximizing
battery life” on page 132 for procedures for doing this. If the
computer is continuously operated on AC power, either
through an AC adapter or a docking station (if applicable to
your system), for an extended period (more than a month) the
battery may fail to retain a charge. This may shorten the life
of the battery, and the battery light may not indicate a low-
battery condition.
In addition to the main battery, you may also have a second
battery installed in the Slim SelectBay. If you travel and need
to work for many hours without an AC power source, you
may purchase a battery module for use in the computer’s
Slim SelectBay, or carry additional charged battery packs
with you.
The computer also has an internal real-time-clock (RTC)
battery.
The RTC battery powers the RTC memory that stores your
system configuration settings and the current time and date
information. It maintains this information for up to a month
while the computer is turned off.
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