HP ZBook 15 Mobile Conserving battery power, Storing a battery, Resolving a low battery level

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Resolving a low battery level

Resolving a low battery level when external power is available

Connect the computer to external power using one of the following devices:

AC adapter

Optional docking or expansion device

Optional power adapter purchased as an accessory from HP

Resolving a low battery level when a charged battery is available

1.Turn off the computer or initiate Hibernation.

2.Replace the discharged battery with a charged battery.

3.Turn on the computer.

Resolving a low battery level when no power source is available

Initiate Hibernation.

Save your work and shut down the computer.

Resolving a low battery level when the computer cannot exit Hibernation

When the computer lacks sufficient power to exit Hibernation, follow these steps:

1.Replace the discharged battery with a charged battery, or connect the AC adapter to the computer and to external power.

2.Exit Hibernation by briefly pressing the power button.

Conserving battery power

Turn off wireless and local area network (LAN) connections and exit modem applications when you are not using them.

Disconnect unused external devices that are not plugged into an external power source.

Stop, disable, or remove any external media cards that you are not using.

Decrease display brightness.

Initiate Suspend or Hibernation, or shut down the computer when you are not using it.

Storing a battery

CAUTION: To reduce the risk of damage to a battery, do not expose it to high temperatures for extended periods of time.

If a computer will be unused and unplugged from external power for more than 2 weeks, remove the battery and store it separately.

To prolong the charge of a stored battery, place it in a cool, dry place.

NOTE: A stored battery should be checked every 6 months. If the capacity is less than 50 percent, recharge the battery before returning it to storage.

Calibrate a battery before using it if it has been stored for one month or more.

34 Chapter 6 Power management

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Contents HP Notebook Product notice Safety warning notice Iv Safety warning notice Table of contents VGA Vii Security Input power Operating environment Page Welcome Finding information Resources For information aboutTouchPad Getting to know your computerTop Lights Buttons and fingerprint reader select models only Select Computer Control CenterKeys Fn keyFront Right Environmental NoticesSee Using a USB device on LeftRear Display Bottom Bottom Using an Internet service provider ISP Identifying wireless and network status iconsCreating a wireless connection Turning wireless devices on and offUsing a Wlan Connecting to an existing WlanSetting up a new Wlan Using the operating system controlsProtecting your Wlan Using Bluetooth wireless devices select models only Connecting to a wired networkConnecting to a local area network LAN select models only Roaming to another networkPage Identifying the hot keys Using the keyboardKeyboard and pointing devices Using the TouchPad Using keypadsUsing the integrated numeric keypad Using an optional external numeric keypadSelecting Using TouchPad gesturesNavigating Tapping ScrollingPinching/Zooming Rotating select models onlySetting pointing device preferences Using the pointing stickMultimedia Using the audio featuresAdjusting the volume Checking your audio functions Using the webcam select models onlyUsing video devices Select Configure Display Settings Click Detect Monitors DisplayPort Power management Setting power optionsUsing power-saving states Shutting down the computerUsing the Power icon Using power managementInitiating and exiting Suspend Initiating and exiting HibernationUsing battery power Displaying the remaining battery chargeInserting or removing the battery Viewing the current power management settingsCharging a battery Identifying low battery levels Maximizing battery lifeManaging low battery levels Resolving a low battery level Conserving battery powerStoring a battery Using external AC power Disposing of a used batteryReplacing the battery Testing an AC adapterPage Handling drives Removing or replacing the service coverDrives Removing the service cover Replacing the service coverReplacing or upgrading the hard drive Removing the hard drivePage Installing a hard drive Using memory cards External cards and devicesInserting a memory card Removing a memory cardUsing smart cards select models only Removing a smart card Using ExpressCards select models onlyInserting a smart card Configuring an ExpressCard Inserting an ExpressCardUsing a USB device Removing an ExpressCardUsing optional external devices Connecting a USB deviceUsing the docking connector Using optional external drivesMemory modules Page Page Protecting the computer Using passwordsSecurity Managing a Bios administrator password Setting passwords in the operating systemSetting passwords in Computer Setup Using a Computer Setup DriveLock password Entering a Bios administrator passwordManaging a DriveLock password Entering a DriveLock passwordManaging an Automatic DriveLock password Using Computer Setup Automatic DriveLockUsing firewall software Enabling fingerprint authentication during logon Installing an optional security cableUsing the fingerprint reader select models only Enrolling your fingerprint Select the Use Fingerprint Reader optionBackup and Recovery Creating backupsCreating restore media Backing up your informationPerforming a system recovery Remove everything and reinstall Sled Computer Setup Bios and Advanced System Diagnostics Starting Computer SetupUsing Computer Setup Navigating and selecting in Computer SetupDetermining the Bios version Updating the BiosRestoring factory settings in Computer Setup Downloading a Bios update Using Advanced System Diagnostics MultiBoot About the boot device orderEnabling boot devices in Computer Setup Considering boot order changesChoosing MultiBoot preferences Setting a new boot order in Computer SetupEntering MultiBoot Express preferences Dynamically choosing a boot device using the f9 promptSetting a MultiBoot Express prompt Troubleshooting and support TroubleshootingAn external device is not working Wireless network connection is not workingComputer is unusually warm Movie is not visible on an external display Computer does not detect the optical driveDisc does not play Contacting support Labels Serial number Product number Cleaning your computer Cleaning productsCleaning procedures Cleaning the displayCleaning the TouchPad, keyboard, or mouse Operating environment SpecificationsInput power Electrostatic discharge