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s Warning: Use only the power adapter that came with your
computer. Adapters for other electronic devices (including
other portable computers) may look similar, but they may
damage your computer.
s
A lightning bolt icon appears in the Battery desk accessory when
the power adapter is plugged in and the battery is recharging. The
lightning bolt icon disappears when recharging is about 85%
complete, though recharging continues. The icon appears even if
the power adapter is plugged into the computer only, so make
sure the adapter is plugged into both the computer and an
electrical outlet.
You can continue to use the computer while the battery is
recharging, but the battery will take longer to recharge if you do.
Battery recharging time while the computer is in use depends on
how often you use the hard disk, how bright the screen is,
whether you are using an external monitor, how deeply the
battery is depleted, and other factors.
If you are using several of your computer’s power-consuming
features (such as an external monitor and a program that requires
frequent hard disk access), and you are not using the features
designed to conserve power (such as processor cycling), the
battery may not recharge until you put the computer to sleep or
shut it down.
If you recharge a fully depleted battery with the computer shut
down, it takes about 2–3 hours to bring the battery to 80% of its
capacity. It takes several more hours to bring the battery charge to
100%.
While the computer is shut down and the power adapter is
plugged in, you can remove a charged battery from the computer
and replace it with a battery you want to charge. If you do this,
disconnect and then reconnect the power adapter after inserting
the second battery (otherwise the second battery will not
recharge).
104 Chapter 7: Power Management
Lightning bolt icon