Conserving Battery Power, Low-Battery Warning | Dell RU335, PP28L

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, hibernate mode begins automatically.

A pop-up window warns you when the battery charge is approximately

90 percent depleted. The computer enters hibernate mode 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. See "Configuring Power Management Settings" on page 46 for information about accessing QuickSet or the Power Options Properties window.

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 46).

•Use the Sleep power state when you leave the computer unattended for long periods of time (see "Using the Sleep Power State" on page 47).

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.

46

Using a Battery

Image 46

Dell RU335, PP28L owner manual Conserving Battery Power, Low-Battery Warning, Configuring Power Management Settings

Contents

Dell XPS M1530 W . d e l l . c o m s u p p o r t . d e l l . c o m September RU335 Contents Using the Keyboard and Touchpad Copying CD, DVD, and Blu- ray Disc BD Using the Memory Card Reader Securing Your Computer Mail, Modem, and Internet Problems 112 Adding and Replacing Parts 129 Traveling With Your Computer 151 Glossary Finding Information Drivers and Utilities Media Setup Diagram Site Dell Support Utility Operating System Media Finding Information Setting Up Your Computer Connecting to the Internet Setting Up Your Internet Connection Transferring Information to a New Computer Setting Up a PrinterPrinter Cable Connecting a USB Printer Surge Protectors Power Protection DevicesLine Conditioners Uninterruptible Power Supplies About Your Computer Front View Dual digital microphones About Your Computer V I C E S T a T U S L I G H T S Page About Your Computer Hdmi connector Ieee 1394a connector Left Side View Right Side View Security cable slot About Your Computer USB C O N N E C T O R Battery Air vent Back View About Your Computer Battery Battery release latch Battery charge/health gauge Bottom View Numeric Keypad Using the Keyboard and TouchpadKey Combinations Microsoft Windows Logo Key Functions Power ManagementAdjusting Keyboard Settings Dell QuickSet Key Combinations Touch Pad Customizing the Touch Pad Using the Display Adjusting Brightness Setting Display Resolution and Refresh Rate 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 Storing a Battery Using a Battery Using Multimedia Playing Media Playing Media Using Dell Travel Remote DVD player includes the following basic buttons Skip Forward How to Copy a CD, DVD or BD Copying CD, DVD, and Blu-ray Disc BD Media Using Blank CD, DVD, and BD Media CD-Writable/DVD-ROM Drives Helpful Tips Blu-ray Drives Adjusting the Volume Adjusting the Picture Using Dell MediaDirect Connecting Your Computer to a TV or Audio Device Green component video-output Hdmi Video and Standard Audio Component Video and Standard Audio Standard audio cable Composite Video and Standard Audio Composite video cable Enabling the Display Settings for a TV Using Multimedia Using the Camera Accessing the Camera’s Help File Manually Adjusting the Camera Settings Creating a Picture or a Video Using ExpressCards ExpressCard Blanks Installing an ExpressCard Removing an ExpressCard or Blank Installing a Memory Card Using the Memory Card ReaderMemory Card Blanks Removing a Memory Card or Blank Setting Up and Using Networks Connecting a Network or Broadband Modem Cable Checking Your Wireless Network Card Wireless Local Area Network WlanWhat You Need to Establish a Wlan Connection Setting Up and Using Networks Setting Up and Using Networks Connecting to a Wlan Completing the Connection to the Wlan Mobile Broadband/Wireless Wide Area Network Wwan Checking Your Dell Mobile Broadband Card Connecting to a Mobile Broadband Network Dell Wi-Fi Catcher Network Locator Enabling/Disabling the Dell Mobile Broadband Card Setting Up and Using Networks Securing Your Computer Security Cable Lock Passwords Fingerprint Reader Computer Tracking Software If Your Computer Is Lost or Stolen Securing Your Computer Dell Technical Update Service TroubleshootingDell Diagnostics Press and hold the Fn key while powering the computer on During the assessment, answer any questions that appear Insert your Drivers and Utilities media Option Function Dell Support Center Dell Support Dell PC Tune-Up Dell PC CheckUp Dell Network Assistant DellConnect Optical drive problems Drive ProblemsProblems writing to an optical drive Mail, Modem, and Internet Problems Hard drive problems Troubleshooting Error Messages Do not use these characters in filenames 101 102 103 Drive and try again Contact the ExpressCard manufacturer ExpressCard ProblemsIeee 1394 Device Problems 105 External Keyboard problems Keyboard ProblemsShut down the computer Disconnect the external keyboard 106 Computer does not start Lockups and Software ProblemsUnexpected characters Computer stops responding Program stops responding or crashes repeatedly Dell MediaDirect problemsMenu to access Dell MediaDirect Help Solid blue screen appears Other software problems 109 Run the Dell Diagnostics see Dell Diagnostics on Memory ProblemsNetwork Problems 110 Mobile Broadband Wireless Wide Area Network Wwan Power Problems111 Printer Problems Scanner Problems 113 No sound from integrated speakers Sound and Speaker ProblemsDisable mute or re-enable the integrated speakers No sound from external speakers No sound from headphones Remote Control ProblemsTouch Pad or Mouse Problems 115 If the display is blank Video and Display Problems116 Glare, which can cause poor picture quality If the display is difficult to read117 If only part of the display is readable What Is a Driver?Drivers Identifying Drivers Reinstalling Drivers and Utilities 119 Using the Drivers and Utilities Media Manually Reinstalling Drivers 121 Restoring Your Microsoft Windows Vista Operating System 122 Using Windows Vista System Restore 123 Troubleshooting Restoring the Computer to the Default Factory Configuration 125 Using the Operating System Media Before You Begin 127 128 Recommended Tools Adding and Replacing PartsBefore You Begin Turning Off Your Computer Before Working Inside Your Computer Hard Drive 131 Removing the Hard Drive Returning a Hard Drive to Dell Replacing the Hard Drive133 Removing the Center Control Cover and Hinge Covers Center Control Cover and Hinge Covers134 135 Keyboard Replacing the Center Control Cover and Hinge Covers Removing the Keyboard Follow the procedures in Before You Begin on137 Removing the Memory Module MemoryReplacing the Keyboard 138 139 Replacing the Memory Module 141 Wireless Mini-Cards Subscriber Identity Module Removing a Wlan Card 143 Replacing a Wlan Card Removing a Mobile Broadband or Wwan Card 145 Disconnect the two antenna cables from the Wwan card Removing the FCM Flash Cache ModuleReplacing a Wwan Card 147 Replacing the FCM Remove the M2 x 3-mm securing screw Remove the FCM Removing the Card Internal Card With Bluetooth Wireless Technology149 Replacing the Card Identifying Your Computer Traveling With Your ComputerPacking the Computer Traveling by Air Travel Tips152 Obtaining Assistance Getting Help153 Technical Support and Customer Service DellConnect Online Services Automated Order-Status Service Problems With Your OrderAutoTech Service Product Information Before You Call Returning Items for Warranty Repair or Credit156 157 Contacting Dell Specifications 159 160 161 USB 162 Lvds 163 164 165 166 167 168 Appendix Using the System Setup Program169 System Setup Screen Viewing the System Setup ScreenCommonly Used Options 171 Cleaning Your Computer Computer, Keyboard, and Display Media Touch PadMouse 173 Dell Technical Support Policy U.S. Only 174 Definition of Third-Party Software and Peripherals Definition of Dell-Installed Software and PeripheralsFCC Notice U.S. Only FCC Class B Macrovision Product Notice 176 Glossary 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 Index 195 Index 197 Index 199 Index