Apple 190 series manual About lithium ion replacement batteries

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 recharge—from 3 to 5.5 hours, depending on which model of Macintosh PowerBook you have, what equipment you’re using with your computer, and what steps you take to conserve power while you work.

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, three-fourths charged, one-half charged, one-fourth charged, or empty. The indicator lights remain lit for a few seconds.

Battery level indicator button

Battery level indicator lights

Fully charged 3/4 charged 1/2 charged 1/4 charged

Power Management 79