Apple M9690LL User Guide - Page 52
Removing and Replacing the Battery, To remove the battery
UPC - 718908816042
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Note: If you have installed additional memory in your PowerBook, it may only provide power for less than three minutes. Also, changing batteries several times in a short period can further reduce this length of time. 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 52). Battery LEDs Battery If the battery icon in the Finder menu bar is set to show the percentage of charge, you might sometimes notice that the battery does not attain a full 100 percent charge when the power adapter is attached. This is normal behavior; battery life is saved when charging is not continuously cycled on and off when the battery's charge capacity is between 95 and 100 percent. When the battery level eventually drops below 95 percent, it will charge all the way to 100 percent. Removing and Replacing the Battery To remove the battery: 1 Shut down your PowerBook. Disconnect the power adapter, phone cord, and any other cables connected to the PowerBook to prevent damaging the computer. 52 Chapter 3 Using Your PowerBook