Conserving Battery Power, Low-Battery Warning | Dell RW491 specification

Low-Battery Warning

NOTICE: To avoid losing or corrupting data, save your work immediately after a low-battery warning, then connect the computer to an electrical outlet. If the battery runs completely out of power, Sleep state begins automatically.

A pop-up window warns you when the battery charge is approximately 90 percent depleted. The computer enters Sleep state when the battery charge is at a critically low level.

You can change the settings for the battery alarms in Dell QuickSet or the Power Options window. For more information, see "Configuring Power Management Settings" on page 52 or "Dell™ QuickSet" on page 155.

Conserving Battery Power

To conserve battery power on your portable computer, do any of the following:

•Connect the computer to an electrical outlet when possible; battery life is largely determined by the number of times the battery is used and recharged.

•Configure the power management settings using either Dell QuickSet or Microsoft Windows Power Options to optimize your computer’s power usage (see "Configuring Power Management Settings" on page 52).

•Use the Sleep power state when you leave the computer unattended for long periods of time (see "Using the Sleep Power State" on page 53).

Configuring Power Management Settings

You can use Dell QuickSet or Windows Power Options to configure the power management settings on your computer.

•For information on how to use the Dell QuickSet Power Management wizard, right-click the QuickSet icon in the notification area, click Help, and then select Power Management.

•To use Windows Power Options, do one of the following:

•Click Start → Control Panel→ Hardware and Sound→ Power Options, and then select a power plan in the Select a power plan window.

or

•Click the icon in the notification area, click Power Options, and then select a plan in the Select a power plan window.

52

Using a Battery

Image 52

Dell RW491 owner manual Conserving Battery Power, Low-Battery Warning, Configuring Power Management Settings

Contents

Dell XPS M1330 W . d e l l . c o m s u p p o r t . d e l l . c o m September RW491 Contents Using the System Setup Program Playing Media Using Dell Travel Remote Optional Contents Using the Memory Card Reader Setting Up and Using Networks Mail, Modem, and Internet Problems Dell MediaDirect problems Adding and Replacing Parts 127 Traveling With Your Computer Glossary Finding Information Drivers and Utilities Media Dell Product Information Guide Service Tag and Microsoft Windows Site Dell Support Utility Operating System Media Determining Your Computer’s Configuration About Your Computer Front View About Your Computer C R O P H O N E a N D a U D I O C O N N E C T O R S V I C E S T a T U S L I G H T S Left Side View Hard drive About Your Computer AC adapter port Right Side View Wireless On/Off Switch LED indicator Battery Air vents Back View Battery Bottom View About Your Computer Setting Up Your Computer Connecting to the Internet Setting Up Your Internet Connection Transferring Information to a New Computer Setting Up a PrinterMicrosoft Windows Easy Transfer Connecting a USB Printer Printer Cable Power Protection Devices Surge Protectors Uninterruptible Power Supplies UPS Line Conditioners Using the System Setup Program Viewing the System Setup Screen System Setup ScreenCommonly Used Options Diskette Drive Internal HDD USB Storage Device CD/DVD/CD-RW drive Modular bay HDD Cleaning Your Computer Computer, Keyboard, and Display Touch Pad Mouse Media Numeric Keypad Using the Keyboard and Touch PadKey Combinations Power Management Adjusting Keyboard SettingsMicrosoft Windows Logo Key Functions Dell QuickSet Key Combinations Touch Pad Customizing the Touch Pad Adjusting Brightness Using the DisplaySetting Display Resolution and Refresh Rate Using the Display Using a Battery Battery Performance Checking the Battery Charge Dell QuickSet Battery Meter Microsoft Windows Battery Meter Charge Gauge Low-Battery Warning Conserving Battery PowerConfiguring Power Management Settings Charging the Battery Using the Sleep Power State Replacing the Battery To remove the battery Storing a Battery Using a Battery Using Multimedia Playing Media Playing Media Using Dell Travel Remote Optional DVD drive includes the following basic buttons Stop Skip Back Reverse Arrow Left Mute Volume Down Using Blank CDs and DVDs How to Copy a CD or DVDCopying CDs and DVDs Helpful Tips CD-Writable/DVD-ROM Drives Adjusting the Volume Adjusting the Picture Using Dell MediaDirect Connecting Your Computer to a TV Using the Hdmi Connector Enabling the Display Settings for a TV Enabling the Audio Settings for a TV Using Multimedia Using ExpressCards ExpressCard Blanks Installing an ExpressCard Removing an ExpressCard or Blank Using ExpressCards Installing a Memory Card Using the Memory Card ReaderMemory Card Blanks Removing a Memory Card or Blank Connecting a Network or Broadband Modem Cable Setting Up and Using NetworksThen click Help and Support Setting Up a Network Wireless Local Area Network WlanChecking Your Wireless Network Card What You Need to Establish a Wlan Connection Setting Up and Using Networks Setting Up and Using Networks Connecting to a Wlan Mobile Broadband or Wireless Wide Area Network Checking Your Dell Mobile Broadband Card Connecting to a Mobile Broadband Network Enabling/Disabling the Dell Mobile Broadband Card Dell Wi-Fi Catcher Network Locator Setting Up and Using Networks Securing Your Computer PasswordsSecurity Cable Lock When using passwords, observe the following guidelines Fingerprint Reader Optional If Your Computer Is Lost or Stolen Securing Your Computer Dell Technical Update Service TroubleshootingDell Diagnostics During the assessment, answer any questions that appear Insert your Drivers and Utilities media Express Test first to increase the possibility of tracing Configuration Dell Support Center Dell Support Dell PC Tune-Up Dell PC CheckUp Dell Network Assistant Drive ProblemsDellConnect Optical drive problems Hardware Problems in the Windows Vista Operating System onProblems writing to a CD-RW or DVD+/-RW drive Or DVD creation software Mail, Modem, and Internet Problems Hard drive problems E a D I F F E R E N T T E L E P H O N E L I N E Error Messages Do not use these characters in filenames 100 101 Drive and try again ExpressCard Problems Ieee 1394 Device ProblemsContact the ExpressCard manufacturer 103 Keyboard Problems External Keyboard problems Lockups and Software Problems Unexpected charactersComputer does not start Computer stops responding Dell MediaDirect problems Menu to access Dell MediaDirect HelpProgram stops responding or crashes repeatedly Solid blue screen appears Other software problems 107 Network Problems Memory ProblemsRun the Dell Diagnostics see Dell Diagnostics on Mobile Broadband Wireless Wide Area Network Wwan 109 Power Problems 110 Printer Problems 111 Scanner Problems Sound and Speaker ProblemsDisable mute or re-enable the integrated speakers No sound from integrated speakers Touch Pad or Mouse Problems No sound from headphonesNo sound from external speakers 113 Video and Display Problems If the display is blank Glare, which can cause poor picture quality If the display is difficult to read115 Drivers What Is a Driver?If only part of the display is readable Identifying Drivers Reinstalling Drivers and Utilities117 Using the Drivers and Utilities Media Manually Reinstalling Drivers 119 Restoring Your Microsoft Windows Vista Operating System 120 Using Windows Vista System Restore 121 Troubleshooting 123 Using the Operating System Media 125 126 Adding and Replacing Parts Before You BeginRecommended Tools Turning Off Your Computer Before Working Inside Your Computer Hard Drive 129 Removing the Hard Drive Returning a Hard Drive to Dell Replacing the Hard Drive131 Hinge Covers and Center Control Cover Removing the Hinge Covers and Center Control Cover 133 Replacing the Hinge Covers and Center Control Cover Removing the Keyboard Keyboard135 Replacing the Keyboard Removing the Dimm 1 Memory Module Memory137 M2.5 x 5-mm screw Replacing the Dimm 1 Memory Module 139 Removing the Dimm 2 Memory Module 141 Replacing the Dimm 2 Memory Module 143 Wireless Mini-Cards Subscriber Identity Module Removing a Wlan Card 145 Disconnect the antenna cables from the Wlan card Removing a Mobile Broadband or Wwan Card Replacing a Wlan Card147 Disconnect the two antenna cables from the Wwan card 148 Replacing a Wwan Card 149 Removing the FCM Flash Cache Module FCM150 Internal Card With Bluetooth Wireless Technology Replacing the FCMRemoving the Card 151 Replacing the Card Coin-Cell Battery152 Replacing the Coin-Cell Battery Removing the Coin-Cell Battery153 154 Dell QuickSet 155 156 Traveling With Your Computer Identifying Your ComputerPacking the Computer 157 Traveling by Air Travel Tips158 Obtaining Assistance Getting Help159 Technical Support and Customer Service DellConnect Online Services Problems With Your Order AutoTech ServiceAutomated Order-Status Service Product Information Before You Call Returning Items for Warranty Repair or Credit162 163 Contacting Dell Specifications 165 166 Sdio 167 USB 168 169 170 171 172 Definition of Dell-Installed Software and Peripherals AppendixDell Technical Support Policy U.S. Only 173 FCC Notice U.S. Only Definition of Third-Party Software and PeripheralsFCC Class B 174 Macrovision Product Notice 175 176 Glossary 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 Video resolution See resolution 192 193 194 Index 195 Index 197 198 199 Index 201 202