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Power sources
Your computer can draw its operating power from two different sources.
m
Main battery
Your computer came with a lithium ion (LiIon) battery. This
battery should provide power for 3–5 hours of work time (you may get
longer work time, depending on the Macintosh PowerBook model you have
and the battery conservation features you use).
m
AC power
You can run your computer from a grounded electrical outlet by
plugging in the power adapter.
These power sources are described in more detail in the following sections.
Monitoring the battery charge
There are four ways you can determine the charge level of your battery:
m Look in the battery monitor portion of the Control Strip.
For information on the battery monitor, see the “Batteries & Power” topic
of Macintosh Guide, available in the Guide (h) menu.
m See low-power messages on your display.
m Look at the battery level icon next to the clock in the menu bar.
m Look at the battery indicator level lights on the battery.
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6
Power Management
Read this chapter for
information about your
Macintosh PowerBook’s battery.