Apple PowerBook (FireWire Informações Técnicas descarregar pdf (Página 40)

40 Chapter 2

Battery and Dual Battery Support

When the external power adapter is not connected, your computer draws power from a

PowerBook battery in the battery bay or expansion bay. You can also insert a second battery

in the expansion bay to double the amount of battery life.

Monitoring Battery Charge Level

You can determine the charge left in your battery by looking at the battery level indicator

lights on the battery itself. The charge can be checked with the battery inserted or outside

the PowerBook. The lights glow to show how much charge is left in the battery. A lighted

circle indicates that the battery has power; an unlighted circle indicates lack of charge. The

indicator lights remain lit for a few seconds after you press the button. If only one ﬂashing

light is on, very little charge is left in the battery. Plug in the power adapter.

Note: The battery level indicator lights stay on while the battery is being charged by the

external power adapter. When the battery is fully charged, the lights turn off.

Removing or Replacing a Battery

PowerBook batteries are removed and inserted the same way as the expansion bay modules.

A depleted PowerBook battery can be easily replaced with a charged one when the computer

is shut down or in sleep. When the computer is in sleep, the internal backup battery provides

enough power to maintain the contents of RAM for one minute while you quickly change

batteries.

Charging a Battery

When the power adapter is connected, the battery is recharged whether the computer is off,

on, or in sleep. However, the battery will recharge more quickly if the computer is off or in

sleep.

Fully charged

3/4 charged

1/2 charged

1/4 charged

Battery level

indicator button

Battery level

indicator lights

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Apple PowerBook (FireWire Informações Técnicas Página 40