P ower Management

In this chapter
nChecking the battery level
nResponding to low-power messages
nRecharging the battery
nRemoving or replacing the battery
nMaximizing battery life
nGetting the most work time out of the battery

Power sources

Your computer can draw its operating power from two different
sources. You choose which power source to use.
nMain battery:Your computer’s main power source is a
nickel-metal-hydride battery. The battery provides power for
up to 6 hours of work (depending on the battery conservation
features you choose).
nAC power: You can run your computer from any standard
electrical outlet by plugging in the power adapter.
Your computer also has backup batteries that maintain the
contents of RAM while you replace the main battery. The backup
batteries do not provide enough power to run the computer.
These power sources are described in more detail in the following
sections.
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Chapter 6