Hey everyone, first post here! I was wondering if this new 10 hour battery technology could be transported to the late 2009 models of the MBP. I figure since they have the same form factor it might be possible but I have no educated clue as to whether this is what determines that. Basically, when my battery needs to be replaced on my late 09' 13" MBP would I be given a 10 hour battery or the old 7 hour one? Be gentle on me!