SO I have a macbook 6,1 the white unibody from 2009 and my battery doesn't last as long. Prolly 2 hours max for a fully charged battery. It has 463 battery cycle count so I think it's time to replace it (or is it not?). I found out that apple can replace your macbooks battery for $129, is it worth the price or going to a third party seller is the way to go? is it safe and fully compatible with macbooks? THANKS!