Apple G4 manual Battery

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46

Battery

When the external power adapter is not connected, your computer draws power from its battery. Depending on the applications you use and external devices connected to your PowerBook, you may find that the length of time that you can run your PowerBook off one battery charge varies. Turning off certain features such as AirPort Extreme or Bluetooth® wireless technology can help to conserve battery charge. For more information about using your battery, see “Battery-Conservation Tips” on page 48.

You can determine the charge left in your battery by looking at the battery level indicator lights on the battery itself. Press the button next to the lights and the lights glow to show how much charge is left in the battery. The indicator lights remain lit for a few seconds after you press the button. You can check the charge with the battery in or out of your PowerBook.

If your battery runs low while you are working, you can shut down your PowerBook and replace the battery with a charged one.

Important: If only one flashing light is on, very little charge is left. If no lights are visible, the battery is completely drained and the computer will not start up unless the power adapter is connected. Plug in the power adapter to let the battery recharge, or replace the drained battery with a fully charged battery (see page 47).

Battery

Battery LEDs

If the battery icon in the Finder menu bar is set to show the percentage of charge, you may sometimes notice that the battery does not maintain a full charge of 100% when the power adapter is attached. When the battery level eventually drops below 95 percent, it will charge all the way to 100 percent. This saves battery life as charging is not continuously cycled on and off.

Chapter 3 Using Your Computer

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Contents Getting Started Page Contents Appendix C Appendix aAppendix B Appendix DYour PowerBook is a full-featured notebook computer 1Getting StartedBasic Features of Your PowerBook Brightness controls Additional Features of Your PowerBook Power adapter port Setting Up Plug In the Power AdapterPrepare to Get Connected PPPConnect Your Cables To connect to a phone lineTo connect to a DSL or cable modem or an Ethernet network Turn On Your PowerBook Problems Turning the Computer On?Nothing happens when you press the Power button Trackpad button To put the computer to sleep, do one of the following How Do I Turn My PowerBook Off?Putting Your PowerBook to Sleep To wake the computerTo initially calibrate your battery, follow these steps Calibrating Your BatteryShutting Down Your PowerBook To shut down your computer, do one of the followingOther Support What’s Next?What If I Have More Questions? Mac OS Help2The Basics Adjusting Your Display To adjust the resolution on your displayUsing Your Power Adapter Using the Trackpad Tips for Using the TrackpadUsing the Keyboard Using a MouseCustomizing Your Desktop and Setting Your Preferences Learning About Mac OSConnecting to a Printer To set up a printerMonitoring Printing Playing a CD and Connecting HeadphonesTo monitor printing To check for updated software Connecting a Camera or Other FireWire or USB DeviceKeeping Your Software Up to Date Using the Internet Connecting to a NetworkTransferring Files to Another Computer When an Application Freezes To force an application to quitPage 3Using Your Computer USB Devices and Battery Power Using USB DevicesUniversal Serial Bus USB Using Multiple USB Devices at the Same Time For More Information on USBFireWire Using FireWire DevicesFireWire Target Disk Mode FireWire Devices and Battery PowerFor More Information on FireWire Using Bluetooth Devices For More Information on Bluetooth Wireless TechnologyHow AirPort Extreme Provides Wireless Internet Access AirPort Extreme Wireless Networking and Internet AccessFor More Information on AirPort Extreme For More Information on Using Ethernet Ethernet 10/100Base-TUsing Your Modem Connecting Speakers and Audio DevicesExternal Video Support DVI, VGA, Composite, and S-Video Connecting an External Display or Projector Turn on the external display or projectorConnecting a Television, VCR, or Other Video Device Using Your PowerBook With the Display ClosedFor More Information on Using an External Monitor or TV To install or use programs from a CD or DVD disc Using Your Optical Drive Inserting a CD or DVD Disc Recording CD-R and CD-RW Discs Ejecting a DiscPlaying DVD Discs To eject a disc, do one of the followingTo record music from your iTunes library For More InformationRecording Information on a DVD To burn an iDVD project onto a blank DVD-R discBattery To remove the battery Removing and Replacing the BatteryTo replace the battery Charging a Battery Battery-Conservation TipsFor More Information on Your PowerBook Battery Security SlotFor More Information on Security Options Installing Additional Memory 4Adding Memory To Your ComputerTo install additional memory 30O Replace the memory slot door and screw it into place Making Sure Your Computer Recognizes the New Memory Page 5Troubleshooting Problems That Prevent You From Using Your Computer If the computer won’t respond or the pointer won’t moveIf you have a problem with an application Other ProblemsIf you forgot your password If the computer won’t turn on or start upIf you have trouble ejecting a disc If you suspect a problem with your computer hardwareTo use Apple Hardware Test To install applications and Classic support If you have problems with your Internet connectionTo install Mac OS Restoring Your Computer’s SoftwareLocating Your Product Serial Number Power Adapter Operating EnvironmentBattery Cleaning Your PowerBook Display Carrying Your PowerBookStoring Your PowerBook AppendixConnecting a Phone Line to the Internal Modem Safety Instructions for Setting Up and Using Your ComputerPlugging In the Power Adapter Using Your PowerBookGeneral Safety Instructions Avoid Hearing Damage Apple and the Environment Battery Connectors and PortsFor More Information Ergonomics Keyboard and TrackpadExternal Mouse ChairBuilt-in Display CConnecting to the Internet There are four kinds of Internet connectionsTo find the settings on a Windows PC To find the settings on a Mac OS X computerTo find the settings on a Mac OS 9 computer Before you connect to the InternetGathering the Information You Need Entering Your Information Dial-Up Modem With Point-to-Point Protocol PPP Connections To test your Internet configuration DSL, Cable Modem, or LAN Internet Connections To set up Network preferences for the built-in Ethernet port Manual Configuration To set up a manual configurationDhcp Configuration To set up a Dhcp configurationPPPoE Configuration To set up a PPPoE connectionAppendix C Connecting to the Internet Setting Up an AirPort Extreme Connection Manually AirPort Extreme Wireless ConnectionTo check if you have access to an AirPort Extreme network Appendix C Connecting to the Internet To test your AirPort Extreme connection Cable Modem, DSL, and LAN Internet Connections Troubleshooting Your ConnectionPPPoE Connections Network Connections Page DTop Ten Questions Forgot my password. How do I reset it? How do I make my PowerBook battery last longer?How does the Mac OS X interface work? Appendix D Top Ten Questions Page Industry Canada Statement FCC Compliance StatementVcci Class B Statement European Community Exposure to Radio Frequency Energy Battery Disposal InformationLaser Information Mouse and Keyboard InformationTelephone Line Problems Information You Need in the United Kingdom Information You Need in Australia Page Index 100 101 102

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