HP ZBook 15 Mobile manual Maximizing battery life, Managing low battery levels

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To prolong battery life and optimize the accuracy of battery charge displays, follow these recommendations:

●If you are charging a new battery, charge it fully before turning on the computer.

NOTE: If the computer is on while the battery is charging, the battery meter in the notification area may show 100 percent charge before the battery is fully charged.

●Allow the battery to discharge below 5 percent of a full charge through normal use before charging it.

●If the battery has been unused for one month or more, calibrate the battery instead of simply charging it.

Maximizing battery life

To maximize battery life:

1.Select Computer > Control Center.

2.In the left pane, click System, and then click Power Management in the right pane.

3.On the On Battery Power tab:

●Adjust the slider to the right of Put computer to sleep when inactive for to 30 minutes.

●Select the Suspend or Hibernate option from the dialog box to the right of When laptop lid is closed.

●Select the Hibernate or Shutdown option from the dialog box to the right of When battery power is critically low.

4.Adjust the slider to the right of Put display to sleep when inactive for to 15 minutes, and select the check box next to Reduce backlight brightness.

5.Select the check box next to Dim display when idle.

6.Click Close.

CAUTION: Removing a battery that is the sole power source for the computer can cause loss of information. To prevent loss of information, save your work and initiate Hibernation or shut down the computer before removing the battery.

Managing low battery levels

The information in this section describes the alerts and system responses set at the factory. Some low-battery alerts and system responses can be changed using Power Management in Control Center. Preferences set using Power Management do not affect lights.

Identifying low battery levels

When a battery that is the sole power source for the computer reaches a low or critical battery level, the following behavior occurs:

●If Hibernation is enabled and the computer is on or in Suspend, the computer initiates Hibernation.

●If Hibernation is disabled and the computer is on or in Suspend, the computer remains briefly in Suspend, and then shuts down and loses any unsaved information.

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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 Resources For information about Finding informationTop Getting to know your computerTouchPad Lights Select Computer Control Center Buttons and fingerprint reader select models onlyFn key KeysFront Environmental Notices RightLeft See Using a USB device onRear Display Bottom Bottom Turning wireless devices on and off Using an Internet service provider ISPIdentifying wireless and network status icons Creating a wireless connectionUsing the operating system controls Using a WlanConnecting to an existing Wlan Setting up a new WlanProtecting your Wlan Roaming to another network Using Bluetooth wireless devices select models onlyConnecting to a wired network Connecting to a local area network LAN select models onlyPage Keyboard and pointing devices Using the keyboardIdentifying the hot keys Using an optional external numeric keypad Using the TouchPadUsing keypads Using the integrated numeric keypadNavigating Using TouchPad gesturesSelecting Scrolling TappingRotating select models only Pinching/ZoomingUsing the pointing stick Setting pointing device preferencesAdjusting the volume Using the audio featuresMultimedia Using video devices Using the webcam select models onlyChecking your audio functions Select Configure Display Settings Click Detect Monitors DisplayPort Shutting down the computer Power managementSetting power options Using power-saving states Initiating and exiting Hibernation Using the Power icon Using power management Initiating and exiting SuspendViewing the current power management settings Using battery powerDisplaying the remaining battery charge Inserting or removing the batteryCharging a battery Managing low battery levels Maximizing battery lifeIdentifying low battery levels Storing a battery Conserving battery powerResolving a low battery level Testing an AC adapter Using external AC powerDisposing of a used battery Replacing the batteryPage Drives Removing or replacing the service coverHandling drives Replacing the service cover Removing the service coverRemoving the hard drive Replacing or upgrading the hard drivePage Installing a hard drive Removing a memory card Using memory cardsExternal cards and devices Inserting a memory cardUsing smart cards select models only Inserting a smart card Using ExpressCards select models onlyRemoving a smart card Inserting an ExpressCard Configuring an ExpressCardRemoving an ExpressCard Using a USB deviceConnecting a USB device Using optional external devicesUsing optional external drives Using the docking connectorMemory modules Page Page Security Using passwordsProtecting the computer Setting passwords in Computer Setup Setting passwords in the operating systemManaging a Bios administrator password Entering a DriveLock password Using a Computer Setup DriveLock passwordEntering a Bios administrator password Managing a DriveLock passwordUsing firewall software Using Computer Setup Automatic DriveLockManaging an Automatic DriveLock password Using the fingerprint reader select models only Installing an optional security cableEnabling fingerprint authentication during logon Select the Use Fingerprint Reader option Enrolling your fingerprintBacking up your information Backup and RecoveryCreating backups Creating restore mediaPerforming a system recovery Remove everything and reinstall Sled Navigating and selecting in Computer Setup Computer Setup Bios and Advanced System DiagnosticsStarting Computer Setup Using Computer SetupRestoring factory settings in Computer Setup Updating the BiosDetermining the Bios version Downloading a Bios update Using Advanced System Diagnostics About the boot device order MultiBootConsidering boot order changes Enabling boot devices in Computer SetupSetting a new boot order in Computer Setup Choosing MultiBoot preferencesSetting a MultiBoot Express prompt Dynamically choosing a boot device using the f9 promptEntering MultiBoot Express preferences Troubleshooting Troubleshooting and supportComputer is unusually warm Wireless network connection is not workingAn external device is not working Disc does not play Computer does not detect the optical driveMovie is not visible on an external display Contacting support Labels Serial number Product number Cleaning the display Cleaning your computerCleaning products Cleaning proceduresCleaning the TouchPad, keyboard, or mouse Input power SpecificationsOperating environment Electrostatic discharge