Technical information

Maximizing the Battery-Powered Operation
Maximizing Battery-Powered Operation
To save battery power effectively:
Use Advanced Power Management (APM)
Decrease the LCD brightness
Use power-saving modes
Use power-saving options
Using Advanced Power Management
Note:
If you have purchased the computer
with a preinstalled operating system,
the APM is already installed
correctly.
The computer has power-management functions built-in. No special
power-management drivers have to be installed before you use the
computer. However, the computer is able to conserve more power
when APM is used.
APM allows you to reduce power consumption when your
applications and devices are idle. Each operating system comes
with its own APM.
OS/2
When you use OS/2 with your computer, APM is automatically
installed when the installation program detects that your
computer has the power-management function.
DOS
When you use DOS with your computer, APM is automatically
installed when the installation program detects that your
computer has the power-management function. To verify that
the computer has APM installed correctly, type power at the
command prompt and press Enter. If a screen similar to the
following appears, APM is successfully installed.
Power Management Status
-----------------------
Setting = ADV: REG
CPU: idle 32% of time.
AC Line Status : OFFLINE
Battery status : High
If such a screen does not appear, add the following line to your
CONFIG.SYS file, using a text editor:
DEVICE=C:\DOS\POWER.EXE
104 IBM ThinkPad 755CX User's Guide