HP 2161AD, 2509 Using Battery Power, To check battery status, To respond to a low-battery warning

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Batteries and Power Management

Using Battery Power

Using Battery Power

To check battery status

From the battery status light

Check the battery status light on the notebook.

From the Windows taskbar

The Windows taskbar can display a power icon that provides detailed battery status information (see Windows Help for details). The icon looks like a battery when AC is not connected.

•Place the pointer over the power icon to display the remaining battery charge. This value is shown as either a percentage of charge remaining, or as time remaining.

•Double-click the power icon to open the Battery Meter window.

From the Windows Control Panel

Select Start > Control Panel > Performance and Maintenance > Power Options, then select the Power Meter tab to see the battery status. The Alarms and Advanced tabs provide additional power-information options.

On the battery

1.Remove the battery from the notebook. See “Getting Started with Your Notebook” in this guide.

2.Press the contact pad on the side of the battery. The number of lights that turn on indicates the remaining charge (each light represents 20 percent of a full charge).

To respond to a low-battery warning

The notebook automatically alerts you when the battery power drops to a critically low level. The notebook first emits a high-pitched beep or displays a warning message. Then, if you do not restore power within a short time, the notebook goes into Hibernation.

32 Reference Guide

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Contents Compaq Notebook Series Reference Guide Ii Reference Guide Important Safety Information Software Product License Agreement Iv Reference GuideReference Guide Vi Reference Guide Contents Batteries and Power Management Index Getting Started with Your Notebook Identifying Parts of the Notebook Series 2100 and N1050vIdentifying Parts of the Notebook Mini-PCI cover no user parts inside Series Identifying Parts of the Notebook Identifying Parts of the Notebook Power mode Battery statusStatus Lights Hard disk drive activityIdentifying Parts of the Notebook Setting Up Your Notebook Insert the batteryConnect AC power Connect a phone line Turn on the notebook Set up WindowsHint Basic Operation Default power settings Power mode To enter this mode FunctionStandby -Power Operating Your NotebookTo reset the notebook To change the boot deviceTo use the TouchPad To use the function hot keys This hot key Does thisTo use the One-Touch buttons To program a One-Touch buttonTo use the ALT GR key To use the Windows and Applications keysThis key combination Does this Using CDs or DVDs Could stop responding and you could lose dataTo play DVD movies To create or copy CDsTo set up password protection Securing Your NotebookTo lock your notebook WindowsTo attach a security cable To protect against virusesTo lock the hard disk drive Hard disk driveTo protect your hard disk drive Taking Care of Your NotebookTo maintain your notebook To clean your notebook To safeguard your dataTo extend the life of the display Batteries and Power Management How the notebook manages power automatically Managing Power ConsumptionInformation that was not saved will be lost Changing timeout settings and creating power schemes Unsaved data if the notebook battery runs down completelyTo check battery status Using Battery PowerTo respond to a low-battery warning To recharge the battery To get the most from your batteriesUsing Battery Power Modem and Network Connections Using the Modem Telephone line type prior to connecting your phone lineTo change your modem settings Special restrictions in certain countriesConnecting to a Local Area Network LAN Connecting to an Existing Wireless Network Making Wireless Network Connections select models onlyTo prepare for connections Creating a New Notebook-to-Notebook Network Ad Hoc Individual wireless functions Purchase a license before using the wireless functionTurning on communication and making a connection Turning off communication and ending a connection Making Wireless Bluetooth Connections select models only To turn Bluetooth communication on and offTurning on Bluetooth communication FunctionTo prepare for Bluetooth connections Turning off Bluetooth communicationSharing files with another Bluetooth device FTP To send or receive files using BluetoothSending Outlook data to another Bluetooth device OPP Add-On Devices Connecting PC Cards To insert or remove a PC Card Connecting External DevicesInserting a PC Card Connecting External Devices Series 2100 and N1050v External microphone connector pink Audio recorderThese jacks may damage the notebook ReplicatorConnecting an external monitor Switching the display to the external monitorAdjusting monitor resolution and other settings To use an external monitorUsing dual display mode To connect an Ieee 1394 device select models onlyUsing the infrared port To connect an infrared device select models onlyPrinting to an infrared printer Transferring files through an infrared connectionTo use a port replicator select models only To dock to the port replicator To undock from the port replicator To install a RAM expansion module Installing Additional RAM MemoryBack of the notebook Series 2100 To remove a RAM expansion module Installing Additional RAM Memory Replacing the Hard Disk Drive To replace the hard disk driveTo replace the hard disk drive holder To prepare a new hard disk drive Troubleshooting and Maintenance Troubleshooting Your Notebook Audio problemsIf no sound is audible If sound does not recordCD-ROM and DVD problems If you can’t boot from a CD or DVDIf you get a Region Code error when playing a DVD movie If a DVD plays erraticallyDisplay problems Hard disk drive problems If an external display does not workIf the notebook hard drive doesn’t spin If the hard disk makes a buzzing or whining noiseHeat problems Infrared problemsIf you have problems with infrared communications If the notebook gets abnormally hotKeyboard and pointing device problems If the pointer is difficult to controlIf the TouchPad doesn’t work If the TouchPad moves the pointer or cursor while you typeLocal area network LAN problems If the built-in network adapter doesn’t connect to the LANIf you can’t log in to Netware servers If a network connection responds slowlyMemory problems Modem problemsIf the modem doesn’t dial or no dial tone is detected If the modem dials incorrectlyIf the modem dials but doesn’t connect If the modem isn’t detectedIf the modem causes an Error message If the modem dials but you can’t hear itIf the modem connects, but transferred data is bad If the modem doesn’t faxPC Card Pcmcia problems Performance problemsPower and battery problems If the notebook stops respondingIf the notebook turns off immediately after it turns on If the notebook keeps beepingIf the Time Remaining for the battery is not correct If the battery doesn’t chargeIf the notebook has a short operating time Printing problems Serial, parallel, and USB problems If a serial mouse doesn’t workIf a serial modem doesn’t work properly If the serial or parallel port is not workingStartup problems Wireless problems If you have problems with wireless 802.11 communicationIf your notebook cannot detect a certain Bluetooth device If your notebook cannot detect any Bluetooth devicesIf you can connect, but the network is slow Configuring the Notebook To run the Bios Setup utilitySetting Description Default Main MenuSecurity Menu To change video memory settings using Bios Setup utility Reinstalling and Updating Software To replace a damaged QuickRestore System Recovery CDReference Information Modem Reference Information Command ConexantModem Reference Conexant G ,h ,i G,h +MCR ECC Commands AT* Commands +FMRRegister Function Conexant Range/units Default Code MeaningPower Cords Safety InformationCountry or Region Rated Voltage and Current Battery Safety Laser SafetyLED Safety Mercury SafetyExposure to Radio Frequency Radiation Regulatory Information Connections to Peripheral DevicesRegulatory Information Canada Declaration of Conformity U.S.AResponsible Party Trade nameEuropean Union Regulatory Information Japan Japan Telecommunications ApprovalNew Zealand Conexant AMC20493-KT5 Data Fax Modem PTC 211/02/071Russia International PTC200 7.5.2 3 4 Ringer SensitivityEMC Index QuickRestore System Recovery USB

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