12
Quick Reference Guide
Using a Battery
Battery Performance
NOTE:
For information about the Dell warranty for your computer, see the
Product Information Guide
or separate
paper warranty document that shipped with your computer.
For optimal computer performance and to help preserve BIOS settings, operate your Dell™ portable
computer with the main battery installed at all times. One battery is supplied as standard equipment in
the battery bay.
NOTE:
Because the battery may not be fully charged, use the AC adapter to connect your new computer to an
electrical outlet the first time you use the computer. For best results, operate the computer with the AC adapter
until the battery is fully charged. To view battery charge status, access the
Control Panel
→
Power Options
, and
then click the
Power Meter
tab.
NOTE:
Battery operating time (the time the battery can hold a charge) decreases over time. Depending on how
often the battery is used and the conditions under which it is used, you may need to purchase a new battery during
the life of your computer.
Battery operating time varies depending on operating conditions. You can install an optional second
battery in the media bay to significantly increase operating time.
Operating time is significantly reduced when you perform operations including, but not limited to, the
following:
•
Using optical drives
•
Using wireless communications devices, PC Cards, ExpressCards, media memory cards, or USB
devices
•
Using high-brightness display settings, 3D screen savers, or other power-intensive programs such as 3D
games
•
Running the computer in maximum performance mode
NOTE:
It is recommended that you connect your computer to an electrical outlet when writing to a CD or DVD.
You can check the battery charge before you insert the battery into the computer (see "Checking the
Battery Charge" on page 13). You can also set power management options to alert you when the battery
charge is low.
CAUTION:
Using an incompatible battery may increase the risk of fire or explosion. Replace the battery only
with a compatible battery purchased from Dell. The lithium ion battery is designed to work with your Dell
computer. Do not use a battery from other computers with your computer.
CAUTION:
Do not dispose of batteries with household waste. When your battery no longer holds a charge, call
your local waste disposal or environmental agency for advice on disposing of a lithium-ion battery. See "Battery
Disposal" in the
Product Information Guide
.
Summary of Contents for D820 - Latitude Laptop Notebook
Page 4: ...4 Contents ...
Page 26: ...26 Inhoud ...
Page 44: ...44 Snelle referentiegids ...
Page 50: ...50 Table des matières ...
Page 68: ...68 Guide de référence rapide ...
Page 74: ...74 Inhalt ...
Page 98: ...98 Sommario ...
Page 116: ...116 Guida di consultazione rapida ...
Page 122: ...122 Contenido ...
Page 140: ...140 Guía de referencia rápida ...
