Good morning, I have tried many things, but nothing helps. So actually last week my 15' Retina MBP used to work for 8-10 hours unplugged, but after installation of Windows 8 in Boot Camp, OS X system's battery management became 3 times worse. I now barely get 3 hours of battery life even though I am just typing in Word in OS X. Tried calibrating the battery, tried checking the activity monitor processes: nothing actually helps. I got no idea what to do Seek for help, folks!