Using battery power | HP 15.6 C6Y99UT#ABA, D0T70US 14 D0T70US#ABA

3.Plug the other end of the power cord into an AC outlet (3).

Using battery power

When a charged battery is in the computer and the computer is not plugged into external power, the computer runs on battery power. When the computer is plugged into external AC power, the computer runs on AC power.

If the computer contains a charged battery and is running on external AC power supplied through the AC adapter, the computer switches to battery power if the AC adapter is disconnected from the computer.

NOTE: The display brightness is decreased to save battery life when you disconnect AC power. To increase display brightness, use the fn+f10 hotkey or reconnect the AC adapter.

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.

Finding battery information in Help and Support

The Battery information section of the Help and Support Learning Center provides the following tools and information:

●Battery Check tool to test battery performance

●Information on calibration, power management, and proper care and storage to maximize battery life

●Information on battery types, specifications, life cycles, and capacity

Using battery power 71

Image 83

HP 15.6 C6Y99UT#ABA, D0T70US 14 D0T70US#ABA manual Using battery power, Finding battery information in Help and Support

Contents

HP EliteBook User Guide Product notice Safety warning notice Iv Safety warning notice Table of contents Pointing devices and keyboard Webcam tips Adjusting webcam properties Vii Power management Drives Security 169 Xii Pointing devices FeaturesIdentifying hardware Top components Features Lights Volume Power Options Buttons, switches, and fingerprint reader Wireless connection Keys Front components Off If the computer is plugged into an external power source Left-side components Right-side components Rear components Vent enables airflow to cool internal components Bottom components Display Wireless antennas select models only Additional hardware components Identifying the labels Page Using wireless devices select models only Wireless, modem, and local area network Using the wireless button Identifying wireless and network iconsUsing the wireless controls Select Start All Programs HP HP Connection Manager Using Wireless Assistant software select models onlyUsing HP Connection Manager select models only Using operating system controls Protecting your Wlan Using a WlanSetting up a Wlan Work behind a firewall Connecting to a WlanUse a wireless transmitter with built-in security Use wireless encryption Roaming to another network Inserting a SIM Using HP Mobile Broadband select models only Removing a SIM Page Bluetooth and Internet Connection Sharing ICS Using Bluetooth wireless devices select models only Cannot create a Wlan connection Troubleshooting wireless connection problems Current network security codes are unavailable Cannot connect to a preferred networkNetwork icon is not displayed Wlan connection is very weak Cannot connect to the wireless router Connecting a modem cable Using the modem select models only Viewing the current location selection Connecting a country-specific modem cable adapterSelecting a location setting Select Start Devices and Printers Adding new locations when traveling Set the modem to ignore dial tones Solving travel connection problemsCheck the telephone line type Check for pulse or tone dialing Clear the check box for Wait for dial tone before dialing Connecting to a local area network LAN Pointing devices and keyboard Using pointing devicesUsing the keyboard Function Hotkey Displaying system information Initiating Sleep Switching the screen image Viewing battery charge information Activating the ambient light sensor Decreasing screen brightnessIncreasing screen brightness Using HP Quick Launch Buttons Opening the Quick Launch Buttons control panel Using HP QuickLook Using an optional external numeric keypad Using HP QuickWebUsing the integrated numeric keypad Cleaning the TouchPad and keyboard Multimedia Multimedia featuresAdjusting the volume Multimedia software Installing multimedia software from a disc Accessing your preinstalled multimedia softwareInstalling your preloaded multimedia software Checking your audio functions Connecting external audio devicesSelect Start All Programs Accessories Sound Recorder AudioPage Video Connecting an external monitor or projectorUsing the external monitor port Using the DisplayPort Using the DreamColor display select models only Selecting the right disc CDs, DVDs, and BDs Identifying the installed optical driveUsing optical discs CDs, DVDs, and BDs Optical drive select models only DVD±RW discs CD-R discsCD-RW discs DVD±R discs Playing a CD, DVD, or BD Observing the copyright warning Configuring AutoPlayChanging DVD region settings Select Start Default Programs Change AutoPlay settings Select Start All Programs Roxio Creator Business Copying a CD, DVD, or BDCreating burning a CD, DVD, or BD Removing an optical disc CD, DVD, or BD Troubleshooting Computer does not detect the optical drive Disc does not play Click Advanced Settings Monitor tab Movie is not visible on an external display Disc does not play automaticallyMovie stops, skips, or plays erratically Obtaining the latest HP device drivers Device driver must be reinstalled To use Windows Update Webcam tips Adjusting webcam propertiesWebcam Select Start All Programs HP HP Business Card Reader Capturing business card imagesPage Initiating and exiting Sleep Power managementSetting power options Using power-saving states Click Hibernate Using the battery meterUsing power plans Initiating and exiting Hibernation Customizing power plans Setting password protection on wakeupViewing the current power plan Selecting a different power plan Connecting the AC adapter Using external AC power Finding battery information in Help and Support Using battery power Inserting or removing the battery Using Battery CheckDisplaying the remaining battery charge Charging a battery Identifying low battery levels Maximizing battery discharge timeManaging low battery levels Page Fully charge the battery Calibrating a batteryResolving a low battery level Discharge the battery Disable Hibernation and SleepPage Reenable Hibernation and Sleep Conserving battery powerFully recharge the battery Replacing the battery Storing a batteryDisposing of a used battery Click Shut down Testing an AC adapterShutting down the computer Page Handling drives Identifying installed drivesDrives Page Improving hard drive performance Using Disk DefragmenterUsing Disk Cleanup Identifying HP 3D DriveGuard status Using HP 3D DriveGuard Using HP 3D DriveGuard software Replacing the hard drive in the hard drive bay Page Page Replacing a hard drive Replacing a drive in the upgrade bayPage Page Replacing an optical drive Page Page Stopping and removing a USB device Using a USB deviceConnecting a USB device External devices Using USB legacy support Stopping and removing a 1394 device Using a 1394 deviceConnecting a 1394 device Stopping and removing an eSATA device Using an eSATA deviceConnecting an eSATA device Using optional external devices Using external drives Using the docking connector Inserting a digital card Using Media Card Reader cardsExternal media cards Stopping and removing a digital card Inserting an ExpressCard Using ExpressCards select models onlyConfiguring an ExpressCard Stopping and removing an ExpressCard Removing a smart card Using Smart Cards select models onlyInserting a smart card Page Memory modules Page Page Page Upgrading a memory module in the primary memory module slot Page Page Page Protecting the computer Security Setting passwords in Computer Setup Using passwordsSetting passwords in Windows Bios administrator password Managing a Bios administrator password Entering a Bios administrator password Using Computer Setup DriveLock Setting a DriveLock password Entering a DriveLock password Changing a DriveLock password Removing DriveLock protection Using Computer Setup Auto DriveLockEntering an Automatic DriveLock password Removing Automatic DriveLock protection Securing system devices Using Computer Setup security featuresViewing Computer Setup System Information Using Computer Setup System IDs Using antivirus software Using firewall software Installing critical updates Using HP ProtectTools Security Manager select models only Installing a security cable Updating software Software updatesPage Determining the Bios version Updating the Bios Downloading a Bios update Page Click Download Updating programs and drivers Using SoftPaq Download Manager Backup and recovery Backing up your information Select Start All Programs Maintenance Backup and Restore Backing up your information Select Startup Repair Performing a recoveryUsing the Windows recovery tools Using a Windows 7 operating system DVD purchased separately Using f11 Select Repair your computer Navigating and selecting in Computer Setup Computer SetupStarting Computer Setup Using Computer Setup Restoring factory settings in Computer Setup Computer Setup menus Security menu File menu User Tools System Configuration menu USB port to the computer Computer Setup Computer Setup menus Ansi About the boot device order MultiBootPage Enabling boot devices in Computer Setup Considering boot order changes Dynamically choosing a boot device using the F9 prompt Choosing MultiBoot preferencesSetting a new boot order in Computer Setup Entering MultiBoot Express preferences Setting a MultiBoot Express prompt Management and printing Using Client Management SolutionsConfiguring and deploying a software image HP Client Manager for Altiris select models only Managing and updating softwarePage HP CCM Client Configuration Manager select models only HP SSM System Software Manager Intel ME Configuration Using Intel Active Management Technology select models onlyEnabling the iAMT solution Using the MEBx setup utility menus Change Intel ME Password IAMT Configuration Using the HP Universal Print Driver select models only Index Symbols/Numerics DVD-ROM USB Jacks Ssid SIM AMT