With the way Apple integrates batteries into MBP's, I can see some "planned obsolescence" here on Apple's part. Let's say I want to replace the battery in my MBP in 3 years. I have to go to Apple for that. Will they even have batteries available for my MBP then? Or will it be "Sorry bud, we don't make those anymore. Can I interest you in a brand new MBP instead?"