so I've had my MBP for a year and a couple of days now, and im already ready for my thrid battery. the first died after about 6-8months (don't remember exactly) with about 50 full cycles it was at 15% battery health (under 1000ma) I calibrated every 3-4 weeks. I talked with apple they said I did everything right and sent me a new battery. so here I am only 4-5 months later with a battery worse than the first one. about a week ago I went to use it and had 98% health and it died in under an hour, no warning no nothing, just shut off. thought it was wierd so I charged it back up and im at 6% (37 full cycles) health now and the battery does not last even 20 minutes with eveything off and screen brightness down. so I will be calling apple again tomorrow as I have apple care and this is complete BS, but my question is why is this happening? I am ruling out bad luck because I see a ton of bad reviews online and even on apples store about how bad these batteries are. Just looking for some advice. -Justin PS its a 2.4ghz with 4gb ram and a 500gb HD if that makes any diff.