I've had my MBP for only about two weeks now, and I'm only getting about 4 hours out of the battery for minimal computing and no bluetooth or ridiculous screen brightness. I've already gone through 13 battery lifecycles, says coconutbattery. Also, Maximum battery charge: 6392 mAh Current battery capacity: 6392 mAh Original battery capacity: 6500 mAh Does this sound like a defective battery? According to Apple, I should be getting almost double the time out of my battery! What gives? Anyone else have this problem?