Apple PowerBook G4 (17-inch, Double Layer Super Drive) - Manual (Page 17)

Chapter 1 Getting Started 17
Shutting Down Your PowerBook
If you aren’t going to use your PowerBook for a day or two, shut it down.
To shut down your computer, do one of the following:
 Choose Apple () > Shut Down from the menu bar.
 Press the power button (®) and click Shut Down in the dialog that appears.
The sleep indicator light goes on briefly during the shutdown process.
If you plan to store your PowerBook for an extended period of time, see “Storing Your
PowerBook” on page 74 for information about how to prevent your battery from
draining completely.
Calibrating Your Battery
To get the longest running time from your battery, calibrate it sometime during the
first week you have your PowerBook.
To initially calibrate your battery:
1 Plug in the power adapter and fully charge your PowerBook battery until the light on
the power adapter plug changes to green and the onscreen meter in the menu bar
indicates that the battery is fully charged.
2 Disconnect the power adapter and use your PowerBook.
When the battery gets low, you will see the first low-battery warning dialog on the
screen. Continue to run the PowerBook using battery power until it goes to sleep; at
that point the battery has been sufficiently drained for calibration.
3 Connect the power adapter and leave it connected until the battery is fully charged
again.
Important: You only have to fully discharge and then charge your battery once to
calibrate it. After that, you can connect and disconnect the power adapter when the
battery is at any charge level.
If you purchased additional batteries, repeat the calibration procedure with the
additional batteries as well. For more information about your power adapter and
battery, see “Using Your Power Adapter” on page 21 and “Using Your Battery” on
page 52.
LL3264.book Page 17 Wednesday, August 17, 2005 6:33 PM