Apple recalls laptop batteries that were made with potentially contaminated Sony cells. If you have a 12- or 15-inch G4 PowerBook or 12" G4 iBook, you could be a winner. Check the serial number on the battery and, if it matches, fill in the form and a new battery will be sent out to you, along with a pre-paid envelope for the old one. Even in the overwhelming probability that your battery wasn't about to explode, you do get a fresh battery for free.