Apple has initiated a worldwide battery exchange program for certain rechargeable batteries that were sold for use with 15-inch MacBook Pro computer systems from February 2006 through May 2006.
The affected batteries have model number A1175 and a 12-digit serial number that ends with U7SA, U7SB or U7SC.
Apple says “some 15-inch MacBook Pro batteries supplied to Apple do not meet our high standards for battery performance. To give our users the best experience possible, we will replace these batteries for customers free of charge.
Note: The affected batteries do not pose a safety risk. You may continue to use your current battery until a replacement arrives.”
You can read about the recall here: