Apple 500 Series manual Power Management, Power sources

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Read this chapter for information

about your PowerBook’s battery.

5 Power Management

Power sources

Your computer can draw its operating power from two different sources.

mMain batteries Your computer came with one or two nickel-metal-hydride (NiMH) batteries (depending on the model you have). Two batteries provide power for up to 7 hours of work time (depending on the PowerBook model and type of battery you have and battery conservation features you choose).

Your PowerBook has space for two batteries. You can keep one or two batteries in the computer at a time. If you need maximum work time, you’ll want to keep both batteries in the computer. If you want your PowerBook to weigh less, you can keep one battery in the computer. (If you have a two-battery model, you need to purchase a cover for the second battery compartment.)

mAC power You can run your computer from a grounded electrical outlet by plugging in the power adapter.

The power adapter includes two power supplies. It can run your computer and charge your batteries at the same time.

These power sources are described in more detail in the following sections.

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Contents User’s Guide Apple Computer, Inc Contents Power Management Index Communications regulation information Vcci statement Trackpad button Plugging in the computer Getting StartedWhen you are ready to begin Opening the display To turn on the computer for the first time Turning on the computerProblems turning on your computer? What’s next? Learning the basics Tips for using the trackpad Learned from the tutorial Reviewing the basicsTurning the computer off Automatic sleep Putting the computer to sleepRestarting a computer that’s already on User’sGuide Where to find answersGetting Help Getting answers to your questions Getting answers with the Topics button Now continue with the next section Getting answers with the Index button Read and follow the instructions in the window Getting answers with the Look For button If you want to close Macintosh Guide, click here Tips for using Macintosh Guide Identifying objects on the screen Main Macintosh Shortcuts window appears Learning useful shortcutsClick one of the category buttons Connecting Additional Equipment Connecting a modem Connecting a printerExternal modem is ready to use Terminator Connecting Scsi devicesConnecting your computer as a Scsi disk Using your PowerBook as a Scsi diskTurn on the PowerBook by pressing the Power On key Simplifying the connection process Quitting Scsi disk mode Drawing battery power in Scsi disk modeConnecting an external monitor Video port Video adapter Video cable Trouble? Working with an external monitor Disconnecting an external monitorConnecting sound input and output devices Adding memory to your computer Connecting other devicesInstalling application programs Installing and Using Application ProgramsSwitching programs Working with several programs at a timeFinding out which programs are open Hiding and showing windows on the desktop Backing up your filesPower sources Power ManagementResponding to low-power messages What you should doWhat you should know Recharging the batteries To remove or replace the batteries, follow these steps Removing or replacing the batteriesPower Management Maximizing work time Maximizing the life of batteriesHealth-related information about computer use Appendix a Health, Safety, and Maintenance TipsMusculoskeletal discomfort Eye fatigue Arranging your work area and equipmentChair Keyboard and trackpad Built-in display MouseAvoiding fatigue What about electromagnetic emissions?External monitor Important care and safety instructions Appendix a Caring for batteries Handling floppy disks Traveling with the PowerBook Service and support Storing the PowerBookAppendix B Using Your Keyboard Control key Index Index Index Index PowerBook Troubleshooting Guide See Scsi Y, Z Apple Publishing System