Hi, I have a 2012 11" Air (2ghz i7, 8gb RAM, 128gb) that has, until today been running fine. I know, with the machine getting older, it was going to eventually need a battery replacement, but today made it evident. A few weeks ago, I checked the battery health and it showed roughly 80 percent at 1280 cycles. This morning, I unplugged it (after charging overnight) and noticed that the battery life was decreasing about a percent a minute (even sitting on the desktop with just a word doc open). I checked the health again and it shows it at 64 percent. I'm not sure what to think of this. I assume it's just a lemon battery, but I was wondering if anyone else has had this problem.