User's Manual
5.1.3.1 Power Schemes Tab
The Power Schemes pull-down menu in the Power Options
Properties displays the selected preset power scheme.
To maximize battery power, use the Portable/Laptop power
scheme.
In Windows XP the processor's performance level depends on the
power scheme you select. You do not need to make any further
adjustments to set the performance level. Each preset power
scheme has different time-out settings for entering standby mode,
hibernate mode, turning off the display, and turning off the hard
drive. For more information on power management options, see
the Help and Support Center.