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Quick Reference Guide 17
FILE LOCATION: J:\DL\DL044469\DTP\D8854eb0.fm
DELL CONFIDENTIAL – PRELIMINARY 1/27/05 – FOR PROOF ONLY
Recalibrating a Battery Using the System Setup Utility
1
Connect the computer to an electrical outlet.
2
Turn on (or restart) the computer.
3
When the DELL logo appears, press <F2> immediately. If you wait too long and the logo for
the Microsoft
®
Windows
®
operating system appears, continue to wait until you see the
Windows desktop. Then shut down your computer and try again.
NOTE: For information about a specific item on a system setup screen highlight the item and see the
Help area on the screen.
4
Using the down-arrow key, select
Battery Info
.
• The
Battery Recalibration Process
screen appears, showing the functions (
Charge
or
Discharge
) on the left of the screen, and the
Battery Info
charge status on the right of the
screen.
• The AC adapter begins charging the battery. The
Charge Battery to Full
option is
highlighted on the left of the screen. The percent charged information is displayed on the
right of the screen.
• The AC adapter charges the battery until the battery gauge states 100% charged. The
battery light turns off after the battery is fully charged.
5
Ensure that the battery light is off.
6
Disconnect the computer from the electrical outlet.
The battery discharges until the battery gauge states 0% charged. The
Discharge Battery to
Empty
option is highlighted on the left of the screen. When the battery is completely
discharged, the computer automatically turns off.
7
Connect the computer to the electrical outlet.
8
Allow the AC adapter to charge the battery until the battery light turns off.
NOTE: You can operate your computer while the battery is charging. However, do not operate your
computer using battery power until the battery is fully charged.
Removing a Battery
CAUTION: Before performing these procedures, remove all peripheral connectors such as phone cord,
network cable, external monitor cable, or USB cables and devices.
1
Ensure that the computer is turned off and disconnected from the electrical outlet.
2
If the computer is connected to the USB port replicator, disconnect it. See the
documentation that came with your USB port replicator for instructions.