I saw on Apple's website that the new battery # is MA348LL/A, but is there any other place I can go to get a battery that'll work with my Macbook Pro? I have a 15" C2D 2.2ghz with 2gb ram purchased in July 07'. Is this the only model # that'll work with mine? Where is the website that shows you all the batteries that you can use to replace your current one from apple? My batt is dying and only has about a 1hr 45min -2 hour charge now and I'm about to go overseas. I'd like something with close to 4-5 hours now. Thanks!