Dell Latitude D820 Technical Manual page 15

You can check the battery charge before you insert the battery into the computer (see
Battery Charge). You can also set power management options to alert you when the battery charge is
low (see Configuring Power Management
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.
CAUTION: Misuse of the battery may increase the risk of fire or chemical burn. Do not
puncture, incinerate, disassemble, or expose the battery to temperatures above 65° C
(149° F). Keep the battery away from children. Handle damaged or leaking batteries with
extreme care. Damaged batteries may leak and cause personal injury or equipment
damage.
Checking the Battery Charge
The Dell QuickSet Battery Meter, the Microsoft Windows Power Meter window and
battery charge gauge and health gauge, and the low-battery warning provide information on the
battery charge.
Dell™ QuickSet Battery Meter
If Dell QuickSet is installed, press <Fn><F3> to display the QuickSet Battery Meter. The Battery Meter
displays status, battery health, charge level, and charge completion time for the battery in your
computer.
For more information about QuickSet, right-click the
Microsoft® Windows® Power Meter
The Windows Power Meter indicates the remaining battery charge. To check the Power Meter,
double-click the icon on the taskbar.
If the computer is connected to an electrical outlet, a
Charge Gauge
By either pressing once or pressing and holding the status button on the charge gauge on the battery,
you can check:
•
Battery charge (check by pressing and releasing the status button)
•
Battery health (check by pressing and holding the status button)
The battery operating time is largely determined by the number of times it is charged. After hundreds
of charge and discharge cycles, batteries lose some charge capacity—or battery health. That is, a
battery can show a status of "charged" but maintain a reduced charge capacity (health).
Settings).
icon in the taskbar, and click Help.
icon appears.
Checking the
icon, the