Apple Macintosh PowerBook 150 - Manual (Page 84)

Maximizing work time
Your PowerBook’s battery can provide several hours of work time before you
need to recharge. The actual work time available depends on the equipment
and power-saving features you’re using.
Ways to conserve battery power
To conserve battery power, follow these tips:
m If you’re working near an electrical outlet, plug in the power adapter.
m If you aren’t using the computer, either turn it off or put it to sleep and plug
in the power adapter.
m Turn down the screen brightness (¤) whenever possible. At its brightest
level, the screen consumes about a third of the power your computer is
using.
m Keep virtual memory turned off in the Memory control panel.
m If your computer has 8 MB of memory or more, you can use a RAM disk
as your startup disk to minimize hard disk use.
m Quit any modem-related program as soon as you are finished using it. As
long as the program is open, your modem is consuming power even if you
are not using the modem.
m Keep screen dimming on in the PowerBook control panel. The lower
settings dim your screen automatically if you haven’t used the computer for
a few minutes.
m Turn off AppleTalk in the AppleTalk Switch module of the Control Strip or
in the Chooser.
m Set the Battery Conservation slider in the PowerBook control panel at
Better Conservation. The rest of this section describes these settings in
detail.
Adjusting the battery conservation settings
The Battery Conservation section of the PowerBook control panel gives you
several ways to control your computer’s power consumption.
75 Power Management