Some 128,000 batteries used in iBook G4 and PowerBook G4 Apple machines are defective, and could overheat and cause a fire hazard, it has been revealed. The lithium ion batteries which were utilised in 12 inch iBook & PowerBook G4s and 15 inch PowerBook G4 models should be exchanged to avoid danger of fire.

The affected batteries could overheat, posing a fire hazard to consumers. Apple has received six consumer reports of these batteries overheating. If you have a recalled battery, please stop using it and order a replacement battery immediately. Once you have removed the battery, plug in the AC adapter to power the computer. If you must temporarily use your computer with the battery, do not leave it unattended and check for signs of overheating.

The effected batteries have model numbers A1061, A1078, and A1079 and serial numbers that begin with HQ441 through HQ507 and 3X446 through 3X510.