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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 "Limited Warranties and Return Policy" on page 146 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.

Battery operating time varies depending on operating conditions. You can either use an optional 65-WHr extended battery or an optional second 28-WHr battery in the media base to significantly increase operating time. For more information about the second battery, see the documentation that came with your media base.

Operating time is significantly reduced when you perform operations including, but not limited to, the following:

Using optical drives, especially DVD and CD-RW 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. See "Power Management" in the Dell Inspiron Help file. To access help, see "Finding Information for Your Computer" on page 17.

NOTE: It is recommended that you connect your computer to an electrical outlet when writing to a CD.

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. See "Power Management" in the Dell Inspiron Help file. To access help, see "Finding Information for Your Computer" on page 17.

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.

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Using a Batter y

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Dell PP04S owner manual Battery Performance, Using a Batter y