Dell Latitude D820 Technical Manual

Also see for D820 - Latitude Laptop Notebook: Quick reference guide Quick reference guide Quick reference guide Quick reference guide Service manual

Contents

Configuring Power Management SettingsYou can use the QuickSet Power Management Wizard or Windows Power Options Properties toconfigure the power management settings on your computer.• To access the QuickSet Power Management Wizard, double-click the icon in the taskbar.For more information about QuickSet, click the Help button in the Power Management Wizard.• To access the Power Options Properties window, click the Start button→ Control Panel→Performance and Maintenance→ Power Options. For information on any field in the PowerOptions Properties window, click the question mark icon on the title bar and then click on thearea where you need information.Charging the BatteryNOTE: With Dell™ ExpressCharge™, when the computer is turned off, the AC adapter charges acompletely discharged battery to 80 percent in about 1 hour and to 100 percent in approximately2 hours. Charge time is longer with the computer turned on. You can leave the battery in thecomputer for as long as you like. The battery's internal circuitry prevents the battery fromovercharging.When you connect the computer to an electrical outlet or install a battery while the computer isconnected to an electrical outlet, the computer checks the battery charge and temperature. Ifnecessary, the AC adapter then charges the battery and maintains the battery charge.If the battery is hot from being used in your computer or being in a hot environment, the battery maynot charge when you connect the computer to an electrical outlet.The battery is too hot to start charging if the light flashes alternately green and orange. Disconnectthe computer from the electrical outlet and allow the computer and the battery to cool to roomtemperature. Then connect the computer to an electrical outlet to continue charging the battery.For more information about resolving problems with a battery, see Power Problems.Replacing the BatteryCAUTION: Before performing these procedures, turn off the computer, disconnect the ACadapter from the electrical outlet and the computer, disconnect the modem from the wallconnector and computer, and remove any other external cables from the computer.NOTICE: You must remove all external cables from the computer to avoid possible connectordamage.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 battery isdesigned to work with your Dell™ computer. Do not use a battery from other computerswith your computer.For information about replacing the second battery, which is located in the media bay, see UsingMultimedia.To remove the battery: