My brother's battery stopped any charging after about 9 months of use. Last week he went to the Genius Bar and they looked at it and told him it was as defective battery. They said they couldn't replace it there, they were too busy, so they had to send it out. They covered it under warranty, but the price was $100 labor charge, and $180 flat rate repair charge. I thought the battery charge was $129 for an Air replacement. Kinda worries me when it comes to battery replacement. Anyone know different?