Apple 500 Series manual Power Management, Power sources

Read this chapter for information

about your PowerBook’s battery.

5 Power Management

Power sources

Your computer can draw its operating power from two different sources.

mMain batteries Your computer came with one or two nickel-metal-hydride (NiMH) batteries (depending on the model you have). Two batteries provide power for up to 7 hours of work time (depending on the PowerBook model and type of battery you have and battery conservation features you choose).

Your PowerBook has space for two batteries. You can keep one or two batteries in the computer at a time. If you need maximum work time, you’ll want to keep both batteries in the computer. If you want your PowerBook to weigh less, you can keep one battery in the computer. (If you have a two-battery model, you need to purchase a cover for the second battery compartment.)

mAC power You can run your computer from a grounded electrical outlet by plugging in the power adapter.

The power adapter includes two power supplies. It can run your computer and charge your batteries at the same time.

These power sources are described in more detail in the following sections.

45