42 Using a Batter yw w w . d e l l . c o m | s u p p o r t . d e l l . c o mBattery PerformanceNOTE: Batteries forportable computers arecovered only during theinitial one-year period ofthe limited warranty foryour computer. For moreinformation about theDell warranty for yourcomputer, see page 147.Use a battery to power the computer when it is not connected to anelectrical outlet. One battery is supplied as standard equipment in thebattery bay.Battery operating time varies depending on operating conditions. Operatingtime may be significantly reduced when you perform operations including,but not limited to, the following:NOTE: It isrecommended that youconnect your computer toan electrical outlet whenwriting 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 3Dgames and engineering programs.• Running the computer in maximum performance mode. See "PowerManagement" in the Tell Me How help file for more information. Toaccess the help file, see page 80.You can set power management options to alert you when the battery chargeis low.CAUTION: Using an incompatible battery may increase the risk offire or explosion. Replace the battery only with a compatiblebattery purchased from Dell. The lithium-ion battery is designedto work with your Dell™ computer. Do not use a battery fromother computers with your computer.CAUTION: Do not dispose of batteries with household waste.When your battery no longer holds a charge, call your local wastedisposal or environmental agency for advice on disposing of alithium-ion battery. See "Battery Disposal" on page 17.CAUTION: Misuse of the battery may increase the risk of fire orchemical burn. Do not puncture, incinerate, disassemble, orexpose the battery to temperatures above 65°C (149°F). Keep thebattery away from children. Handle damaged or leaking batterieswith extreme care. Damaged batteries may leak and causepersonal injury or equipment damage.
