HP LJ475UT manual Displaying the remaining battery charge

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NOTE: When you disconnect AC power, the display brightness is automatically decreased to save battery life. For information on increasing or decreasing display brightness, refer to Keyboard and pointing devices on page 22.

You can keep a battery in the computer or in storage, depending on how you work. Keeping the battery in the computer whenever the computer is plugged into AC power charges the battery and also protects your work in case of a power outage. However, a battery in the computer slowly discharges when the computer is off and unplugged from external power.

WARNING! To reduce potential safety issues, use only the battery provided with the computer, a replacement battery provided by HP, or a compatible battery purchased from HP.

Computer battery life varies, depending on power management settings, programs running on the computer, display brightness, external devices connected to the computer, and other factors.

Displaying the remaining battery charge

▲Move the pointer over the Power icon, in the notification area, at the far right of the taskbar.

Using battery power 39

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Contents HP Notebook User Guide Product notice Safety warning notice Iv Safety warning notice Table of contents VGA Drives Performing a system recovery Backing up your information Cleaning products Page Finding information WelcomeResources For information about Finding informationTop Getting to know your computerTouchPad Lights Buttons Control Center System Power ManagementFn key KeysEsc key Front Right Left Left Display Bottom Networking Using an Internet service provider ISP Creating a wireless connection Identifying wireless and network status iconsUsing a Wlan Turning wireless devices on and offSetting up a new Wlan Connecting to an existing WlanRoaming to another network Protecting your WlanConnecting to a wired network Using Bluetooth wireless devices select models onlyUsing a modem select models only Connecting a modem cableConnecting a country- or region-specific modem cable adapter Connecting to a local area network LAN select models only Keyboard and pointing devices Using the keyboardIdentifying the hotkeys Using the keyboard Using the embedded numeric keypad Using keypadsTurning the embedded numeric keypad on and off Using the integrated numeric keypadUsing an optional external numeric keypad Using the TouchPadTurning the TouchPad off and on Navigating Using TouchPad gesturesSelecting Scrolling Setting pointing device preferencesPinching/Zooming Multimedia Using the media activity keysUsing the audio features Adjusting the volume Checking your audio functions Using the Webcam select models onlyVGA Using video devicesConnecting an Hdmi device select models only Configuring audio for Hdmi select models only Shutting down the computer Power managementUsing power-saving states Setting power optionsInitiating and exiting Suspend Initiating and exiting HibernationUsing the Power icon Using battery powerUsing power management Viewing the current power management settingsDisplaying the remaining battery charge Inserting or removing the battery Charging a battery Managing low battery levels Maximizing battery lifeIdentifying low battery levels Storing a battery Conserving battery powerResolving a low battery level Disposing of a used battery Using external AC powerReplacing the battery Testing an AC adapter Handling drives DrivesRemoving the hard drive Replacing or upgrading the hard driveLift the hard drive 3 out of the hard drive bay Drives Installing a hard drive Page Identifying the installed optical drive Using optical drives select models onlyInserting an optical disc Removing an optical discWhen the disc tray opens normally Page External cards and devices Using Digital Media Slot cards select models onlyInserting a digital card Removing a digital card Configuring an ExpressCard Using ExpressCards select models onlyInserting an ExpressCard Removing an ExpressCard Using a USB deviceRemoving a USB device Connecting a USB deviceUsing optional external drives Using optional external devicesMemory modules Page Page Page Page Protecting the computer SecuritySetting passwords in the operating system Using passwordsSetting passwords in Computer Setup Entering an administrator password Managing an administrator passwordManaging a power-on password Entering a power-on password Using firewall softwareInstalling an optional security cable Performing a system recovery Backing up your information Backup and RecoveryPerforming a system recovery Backing up your information Starting Computer Setup Computer SetupUsing Computer Setup Navigating and selecting in Computer SetupRestoring factory settings in Computer Setup Updating the BiosDownloading a Bios update Determining the Bios versionTroubleshooting Troubleshooting and supportComputer is unable to start up Computer screen is blankComputer is on but not responding Software is functioning abnormallyComputer is unusually warm An external device is not workingOptical disc tray does not open for removal of a CD or DVD Wireless network connection is not workingDisc does not play Computer does not detect the optical driveMovie is not visible on an external display Contacting customer support Component LabelsCleaning products Cleaning your computerInput power SpecificationsOperating environment Electrostatic discharge USB IndexJacks