IBM ThinkPad 755CX, Manual

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Maximizing the Battery-Powered Operation
Using Power-Saving Options
Note:
If you have installed an operating
system, make sure you also install
the ThinkPad Features program. The power-saving options specified in each power mode save
battery power and make it possible to use the battery pack longer
before another recharge is needed. You should select Automatic
or Customized when you travel, because Automatic mode saves
power automatically, and you can select values that use the least
power by using Customized mode.
To install the ThinkPad
Features program:
Page 180.
Note:
These power modes allow
immediate setting of all
power-saving options to their
optimum values for each mode.
To select a power mode:
Press and hold Fn; then press F11. The power option (High
Performance, Automatic, or Customized) changes each time
you press this key combination.
Enter PS2 ? at the command prompt; then select the
appropriate PS2 command.
Click on the Power icon of the ThinkPad Features program
menu; then select Automatic or Customized.
If you use Windows or OS/2, press and hold Fn; then press F2.
The fuel-gauge window appears on the screen. Double-click
the power mode icons.
Power mode:
Page 37.
PS2 command:
Page 41.
Chapter 4. Using Battery Power
107