User Guide

PowerBook G4 Backup Battery - 2
Procedure
1. Notice that the backup battery cable and the single, black wireless antenna cable are
held in place by transparent orange Kapton tape.
Important: When reassembling the computer, make sure the connected backup
battery cable is routed at an approximate 90-degree angle, as shown.
Note: When reassembling the computer, reuse the tape to secure the
replacement backup battery cable and the wireless antenna cable.
2. Carefully peel away the tape so you can disconnect the backup battery connector from
the PMU card.
3. Note: The backup battery has four ceramic discs that are compressed between two
thin plastic sheets. The battery is held in place with adhesive on the lower plastic
sheet.
Pry up the battery so that the entire battery—including the lower plastic sheet—is
removed from the inner top case.
4. If there is any residual adhesive left on the surface of the inner top case, remove it by
rubbing it away. Do not use solvents.
Note: When installing the replacement backup battery, make sure the inner top case
is clean and free of debris.
5. Peel off the cover sheet from the bottom surface of the replacement battery to expose
the adhesive.