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42 Using a Battery
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Battery Performance
NOTE: Batteries for portable computers are covered only during the initial one-year period of
the limited warranty for your computer. For more information about the Dell warranty for your
computer, see page 145.
Use a battery to power the computer when it is not connected to an electrical outlet. One
battery is supplied as standard equipment in the battery bay.
Battery operating time varies depending on operating conditions.
Operating time may be significantly reduced when you perform operations including, but
not limited to, the following:
NOTE: It is recommended that you connect your computer to an electrical outlet when writing
to a CD.
• Using optical drives, especially DVD and CD-RW drives.
• Using wireless communications devices, PC Cards, or USB devices.
• Using high-brightness display settings.
• Using 3D screen savers or other power-intensive programs such as 3D games and
engineering programs.
• Running the computer in maximum performance mode. See "Power Management" in
the Tell Me How help file for more information. To access the help file, see page 80.
You can set power management options to alert you when the battery charge is low. You can
also set power modes to optimize power consumption and battery charge time. See
page 124 for additional information.
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" on
page 17.
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.