Dell Latitude C540 - Manual (Page 35)

NOTE: Batteries lose some charge capacity over time as they are repeatedly charged and discharged.
You can check the battery charge before you insert the battery into the computer. 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. The
4460-mAh lithium-ion battery is designed to work with your Dell™ computer. Replace it
only with a compatible battery purchased from Dell. A 3800- or 3600-mAh battery from any
Latitude™ C-Family computer will also work in this computer, although with significantly
decreased battery life.
CAUTION: Do not dispose of the 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 your System 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 Microsoft® Windows® power meter window and icon, the battery charge gauge and health gauge,
and the low-battery warning provide information on the battery charge.
Power Meter
The Windows power meter indicates the remaining battery charge. To check the power meter, double-click
the icon on the taskbar. For more information on the Power Meter tab, see " Power Management ."
If the computer is connected to an electrical outlet, a icon appears instead.
Charge Gauge
Before you insert a battery, press the status button on the battery charge gauge to illuminate the charge-
level lights. Each light represents approximately 20 percent of the total battery charge. For example, if the
battery has 80 percent of its charge remaining, four of the lights are on. If no lights appear, the battery has
no charge.