Using a Battery 27
Using a Battery

Battery Performance

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions
located in the Product Information Guide.
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. Use a battery to run the computer
when it is not connected to an electrical outlet. One battery is supplied as standard equipment in
the battery bay.
NOTE: Battery capacity (the time it 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. Operating time is
significantly reduced when you perform operations including, but not limited to, the
following:
• Using optical drives, such as DVD or CD drives
• Using wireless communications devices, PC 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
orDVD.
You can 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
or Nickel metal-hydride battery. See "Battery Disposal" in the Product Information Guide.