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About lithium ion replacement batteries
You can purchase an optional lithium ion (LiIon) battery as an extra or replacement for the standard NiMH battery that came with your Macintosh PowerBook. LiIon batteries provide somewhat longer work time than NiMH batteries before you need to
In addition, LiIon batteries weigh less than NiMH batteries and provide indicator lights on the battery itself that let you monitor the remaining charge.
Follow these steps to determine the charge level in a LiIon battery:
1Save your work, and then choose Shut Down or Sleep from the Special menu or plug in the power adapter.
2Pull the battery out of its compartment.
For instructions on removing the battery, see “Removing or Replacing the Battery” earlier in this chapter.
3Push the battery level indicator button to activate the battery level indicator lights.
The lights show whether the battery is fully charged,
Battery level indicator button
Battery level indicator lights
Fully charged 3/4 charged 1/2 charged 1/4 charged
Power Management | 79 |