16 Quick Reference Guidew w w . d e l l . c o m | s u p p o r t . d e l l . c o mFILE LOCATION: J:\DL\DL044401\DTP\C5268eb0.fmD E L L C O N F I D E N T I A L – P R E L I M I N A R Y 1 2 / 8 / 0 4 – F O R P R O O F O N LYFor optimal computer performance and to help preserve BIOS settings, operate your Dell™computer with the battery installed at all times. Use a battery to run the computer when it is notconnected to an electrical outlet. One battery is supplied as standard equipment in the battery bay.Battery operating time varies depending on operating conditions.NOTE: Battery operating time (the time it can hold a charge) decreases over time. Depending on howoften the battery is used and the conditions under which it is used, you may need to purchase a newbattery during the life of your computer.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-network communications devices, PC Cards, or USB devices• Using high-brightness display settings, 3D screen savers, or other power-intensive programssuch as 3D games• Running the computer in maximum performance modeNOTE: It is recommended that you connect your computer to an electrical outlet when it is writing to aCD or DVD.You can check the battery charge by pressing the battery-charge status button on the battery. Youcan also 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 thebattery only with a compatible battery purchased from Dell. The lithium-ion battery is designed to workwith 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 acharge, call your local waste disposal or environmental agency for advice on disposing of a lithium-ionbattery. See "Battery Disposal" in the Product Information Guide.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 batteryaway from children. Handle damaged or leaking batteries with extreme care. Damaged batteries mayleak and cause personal injury or equipment damage.Checking the Battery ChargeThe Dell QuickSet Battery Meter, the Microsoft® Windows® Power Meter window and icon,the battery charge gauge and health gauge, and the low-battery warning provide information on thebattery charge.Dell QuickSet Battery MeterIf Dell QuickSet is installed, press to display the QuickSet Battery Meter.The Battery Meter window displays status, charge level, and charge completion time for the batteryin your computer.