User's Guide

Using a Battery

Battery Performance

Checking the Battery Charge

Charging the Battery

Removing a Battery

Removing and Installing a Reserve Battery

Installing a Battery

Storing a Battery

Battery Performance

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 the computer 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. With average usage, you may expect from 3

to 4 hours from a single, fully charged battery. You can install an optional second battery in the module bay to

significantly increase operating time. For more information about the second battery, see "Using the Module

Bay."

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

NOTE: Batteries for portable computers are covered under warranty only during the initial 1-year

period of the limited warranty for the computer. For more information about the Dell warranty for the

computer, see the System Information Guide or separate paper warranty document that shipped with

your computer.

NOTE: For more information on maximizing battery operating time, see "Power Management."

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

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