Hot of the press, a couple of days ago...
iBook G4 and PowerBook G4
Battery Exchange Program
In cooperation with the U.S. Consumer Product Safety Commission (CPSC) and other international safety authorities, Apple is voluntarily recalling certain lithium ion rechargeable batteries that were sold worldwide from October 2004 through May 2005 for use with the following notebook computers: 12-inch iBook G4, 12-inch PowerBook G4 and 15-inch PowerBook G4. These batteries were manufactured by LG Chem, Ltd. of South Korea.
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.
Apple has initiated a worldwide exchange program and will provide eligible customers with a new replacement battery, free of charge.
Go here if you fall under this catagory
I sent in my request on Sat and got my new battery on Mon. Again, Apple comes through for me.