HP : B4B15UA manual Using external AC power, Disposing of a used battery, Replacing the battery

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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.

Disposing of a used battery

WARNING! To reduce the risk of fire or burns, do not disassemble, crush, or puncture; do not short external contacts; do not dispose of in fire or water.

Refer to the Regulatory, Safety and Environmental Notices for proper battery disposal.

Replacing the battery

In Windows 7, Battery Check in Help and Support notifies you to replace the battery when an internal cell is not charging properly or when the battery storage capacity has reached a weak condition. If the battery is possibly covered by an HP warranty, instructions include a warranty ID. A message refers you to the HP Web site for more information about ordering a replacement battery.

Using external AC power

NOTE: For information on connecting to AC power, refer to the Quick Setup poster provided in the computer box.

External AC power is supplied through an approved AC adapter or an optional docking or expansion device.

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

Connect the computer to external AC power under any of the following conditions:

WARNING! Do not charge the computer battery while you are onboard aircraft.

●When charging or calibrating a battery

●When installing or modifying system software

●When writing information to a CD, a DVD, or a BD (select models only)

●When running Disk Defragmenter

●When performing a backup or recovery

When you connect the computer to external AC power, the following events occur:

●The battery begins to charge.

●If the computer is turned on, the power meter icon in the notification area changes appearance. When you disconnect external AC power, the following events occur:

●The computer switches to battery power.

●The display brightness is automatically decreased to save battery life.

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Contents HP Notebook Product notice Safety warning notice Iv Safety warning notice Table of contents VGA External cards and devices Security Page Page Finding more information about your new computer IntroductionNetworking select models only Creating a wireless connectionIdentifying wireless and network status icons Using HP Connection Manager select models only Turning wireless devices on or offSetting up a new Wlan Using a WlanUsing operating system controls Connecting to an existing WlanProtecting your Wlan Inserting a SIM Using HP Mobile Broadband select models onlyRoaming to another network Removing a SIM Using GPS select models onlyUsing a modem select models only Using Bluetooth wireless devicesConnecting to a wired network Bluetooth and Internet Connection Sharing ICSConnecting a country- or region-specific modem cable adapter Connecting a modem cableViewing the current location selection Selecting a location settingSelect Start Devices and Printers Connecting to a local area network LAN select models onlyPage Audio Using the media activity controlsMultimedia Checking audio functions on the computer Adjusting the volumeWebcam select models only DisplayPort VideoHdmi Configuring audio for Hdmi Using CyberLink PowerDVD select models onlyIntel Wireless Display select models only Shutting down the computer Power managementInitiating and exiting Hibernation Setting power optionsUsing power-saving states Initiating and exiting SleepSelecting a different power plan Using the power meterUsing power plans Viewing the current power planCustomizing power plans Using HP Power Manager select models onlySetting password protection on wakeup Using Battery Check Using battery powerFinding battery information Identifying low battery levels Displaying the remaining battery chargeMaximizing battery discharge time Managing low battery levelsResolving a low battery level Conserving battery powerStoring a battery Replacing the battery Using external AC powerDisposing of a used battery Testing an AC adapter Using HP CoolSense select models onlyInserting a digital card Using Digital Media Slot cards select models onlyExternal cards and devices Inserting an ExpressCard Using ExpressCards select models onlyConfiguring an ExpressCard Removing a digital cardRemoving an ExpressCard Inserting a smart card Using smart cards select models onlyRemoving a smart card Using a USB deviceConnecting a USB device Removing a USB device Using 1394 devices select models onlyConnecting a 1394 device Removing a 1394 device Using an eSATA device select models onlyConnecting an eSATA device Removing an eSATA device Using optional external devicesUsing optional external drives Using the expansion port select models onlyUsing optional external devices Handling drives DrivesImproving hard drive performance Using hard drivesUsing Disk Defragmenter Using Disk CleanupIdentifying HP ProtectSmart Hard Drive Protection status Managing power with a parked hard driveInserting an optical disc Using optical drives select models onlyIdentifying the installed optical drive Using HP ProtectSmart Hard Drive Protection softwareSlot load Removing an optical discWhen the disc tray opens normally Slot load Sharing optical drives Using RAID select models onlyProtecting the computer Using passwordsSecurity Setting passwords in Setup Utility Bios Setting passwords in WindowsEntering an administrator password Managing an administrator passwordEntering a power-on password Using antivirus softwareUsing firewall software Managing a power-on passwordInstalling an optional security cable Installing critical security updatesLocating the fingerprint reader Using the fingerprint reader select models onlyCleaning the TouchPad and keyboard MaintenanceCleaning your computer Cleaning the displayUsing SoftPaq Download Manager Changing the language of Setup Utility Bios Setup Utility Bios and System DiagnosticsUsing Setup Utility Bios Starting Setup Utility BiosDisplaying system information Navigating and selecting in Setup Utility BiosRestoring factory settings in Setup Utility Bios Determining the Bios version Exiting Setup Utility BiosUpdating the Bios Select Start Help and Support Maintain Downloading a Bios updateUsing System Diagnostics Traveling with the computer Page Troubleshooting resources Electrostatic Discharge Index Symbols/NumericsPasswords