· Press the power button.· Close the display.· Press .NOTE: Some PC Cards may not operate correctly after the computer exits hibernate mode. Remove and reinsertthe card (see “1 5 0 H Removing a Card or Blank”), or simply restart (reboot) your computer.To exit hibernate mode, press the power button. The computer may take a short time to exit hibernate mode. You cannotmake the computer exit hibernate mode by pressing a key or touching the touch pad or track stick. For more informationon hibernate mode, see the documentation that came with your operating system.4.6 Configuring Power Management SettingsYou can use the QuickSet Power Management Wizard or Windows Power Options Properties to configure the powermanagement settings on your computer. For more information about QuickSet, right-click the QuickSet icon in thetaskbar and click Help.4.6.1 Accessing Power Options PropertiesWindows XPClick Start→ Control Panel→ Performance and Maintenance→ Power Options.Windows VistaClick Start→ Control Panel→ System and Maintenance→ Power Options.4.7 Charging the BatteryNOTICE: The battery temperature must be between 0 0 C and 55 0 C (32 0 F and 131 0 F) to charge. If the battery isnot in this temperature range when a charge is attempted, the light flashes alternately green and orange. Thismay happen when the battery has gotten hot from being used in your computer or in a hot environment.Disconnect the computer from the electrical outlet and allow the computer and the battery to cool to the chargingtemperature range. Then connect the computer to an electrical outlet to continue charging the battery.NOTE: With Dell™ ExpressCharge™, when the computer is turned off, the AC adapter charges a completelydischarged battery to 80 percent in approximately 1 hour and to 100 percent in approximately 2 hours. Charge timeis longer with the computer turned on. You can leave the battery in the computer as long as you like. The battery’sinternal circuitry prevents the battery from overcharging. Battery charge times may vary dependent upon theambient temperature.When you connect the computer to an electrical outlet or install a battery while the computer is connected to an electricaloutlet, the computer checks the battery charge and temperature. If necessary, the AC adapter then charges the batteryand maintains the battery charge.For more information about resolving problems with a battery, see "1 5 1 H Power Problems”.4.8 Replacing the BatteryFigure 4 1 Accessing the Battery Compartment
