This article explains how to replace the internal battery in a Power Mac G4 (Digital Audio/Gigabit Ethernet) computer. You may also view the following procedure in QuickTime at http://www.info.apple.com/installparts .

Be sure to follow the instructions in this sheet carefully. Failure to follow these instructions could result in damage to your equipment and may void your warranty.

Replacing the battery requires five basic steps:

• Turn off the computer.
• Open the computer.
• Remove the installed battery.
• Install the replacement battery.
• Close the computer.

Tools Required

No tools are required for this procedure.

Electrostatic Discharge (ESD )

Static electricity, a normal and natural phenomenon, builds up on your body as you walk around. You experience an electrostatic discharge (ESD) when you touch an object and feel a spark. ESD can cause damage to the internal components of your computer. Avoid walking around while performing this procedure, and follow the instructions carefully when you are asked to discharge static electricity.

Opening the Computer

Warning: Always turn off your computer before opening it to avoid damaging its internal components.

1. Place your computer on a clean, flat surface.

2. If you think your computer is in sleep, press the power button on the front of the computer to wake it.

3. Shut down your computer by opening the Special menu and choosing Shut Down. Then wait five minutes for the computer's internal components to cool down.

4. If you attached a security cable through the computer's lockable cover latch, remove the cable.

5. Unplug all other cables from the computer except the power cord.

6. Touch the metal PCI access covers on the back of the computer. Important: To avoid electrostatic discharge, always ground yourself by touching the port access covers before you touch any parts or install any components inside the computer. To avoid static electricity building back up in your body, do not walk around the room until you have completed your installation and closed the computer.

7. Unplug the power cord.

8. Lift the latch on the right side access panel

9. Gently lower the access panel until it lies flat. To avoid scratching the case, lower the panel onto a soft, clean cloth.

Replacing the Battery

1. Note the orientation of the installed battery's positive (+) end. (Positive and negative signs are also marked on the battery holder.)

2. Carefully pull the battery up and out of the holder. You may use a flat-blade screwdriver to help pry the battery gently from the holder.

Warning: Batteries contain chemicals, some of which may be harmful to the environment. Please dispose of used batteries according to your local environmental laws and guidelines. Do not return used batteries to Apple.

3. Insert the new battery into the holder, making sure the battery's positive and negative signs align with those on the holder.

Closing the Computer

1. Raise the side access panel, lift the latch, and press the panel against the case until it snaps securely into place.

2. Reconnect all cables and restart your computer.

Resetting Date and Time

Replacing the battery changes the date and time settings on your computer. Use the Date & Time control panel to correct the date and time.