Many of us have encountered problems with the batteries of the first MacBook Pro. Until now, Apple had agreed to exchange them one by one or more systematically according to their age. But the exchange only happened at the request of the customer.
Now, they have decided to exchange all the batteries of MacBook Pro sold between February and May 2006. These products are those of the A1175 model for MacBook Pro 15" having a part number ending in U7SA, U7SB or U7SC. To obtain a new battery and to return the preceding one, it is necessary to go to be registered on their site with the following address: https://support.apple.com/macbookpro15/batt...ange/index.html
If you bought additional batteries for your MBP, think of checking that their part number is also included, whatever the date of purchase knowing that it could come from an old stock.
