Apple PowerBook G3 - Manual (Page 39)

Using Your PowerBook and Connecting to a Network 39
Using the Battery Level Indicator Lights
You can tell 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.
Push the battery level indicator button to activate the battery level indicator
lights.
The lights show how much charge is left in the battery. A lighted square indicates that the
battery has power; an unlighted square indicates lack of charge. The indicator lights remain
lit for a few seconds.
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.
Responding to Low-Power Messages
When the battery runs low, the computer displays a series of low-power messages. The work
time remaining after you see the first message varies depending on how you are using the
computer. It’s a good idea to act promptly.
What You Should Do
When you see a low-power message, you should do one of the following:
m Plug in the external power adapter.
m Save your work and shut down the computer.
m Put the computer to sleep, and quickly replace the depleted battery with a charged one.
What You Should Know
When the first low-power message appears, the screen dims automatically to save power. If
you continue to work without plugging in the power adapter or changing the battery, the
computer displays a second low-power message indicating that the computer is about to put
itself to sleep. Within a few seconds, the computer goes to sleep automatically to protect the
contents of RAM. All activities are interrupted. It’s a good idea to save your work when you
see the first of the two low-power messages to make sure you don’t lose information.
Fully charged
3/4 charged
1/2 charged
1/4 charged
Battery level
indicator button
Battery level
indicator lights