pple has asked owners of its 15in MacBook Pro notebook who bought their machine between February and May 2006 to contact them and request a replacement battery. Apple stressed the batteries it wants to replace "do not pose a safety risk".

The affected products are model number A1175. They have a 12-digit serial number ending in 'U7SA', 'U7SB' or 'U7SC'. The details can be found on the battery itself, but you'll need to remove it from the computer first.

MacBook Pro owners for the replacement programme go here.