Dell Latitude C540 - Manual (Page 41)

Open the Control Panel. 1.
Double-click the Power Options icon. 2.
In Windows XP
Click the Start button and click Control Panel. 1.
Under Pick a category, click Performance and Maintenance. 2.
Under or pick a Control Panel icon, click Power Options. 3.
Power Schemes Tab
The Power schemes pull-down menu displays the selected preset power scheme. Depending on your
operating system, typical power schemes are:
NOTE: Dell recommends that you use the Portable/Laptop power scheme to maximize battery
power.
Portable/Laptop
Home/Office
Always On
Presentation
Minimal Power Management
Max Battery
Windows XP controls the performance level of the processor depending 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, turning off the display, and turning off the hard drive.
For more information on power management options, see
Windows Help (Help and Support Center in
Windows XP).
Alarms Tab
NOTE: To enable audible alarms, click each Alarm Action button and select Sound alarm.
The Low battery alarm and Critical battery alarm settings alert you with a message when the battery
charge falls below a certain percentage. When you receive your computer, the Low battery alarm and
Critical battery alarm check boxes are selected. Dell recommends that you continue to use these settings.
See "
Using a Battery " for more information on low-battery warnings.