Hi i think the macbook pro is meant to have a theoretical battery life of 10 hours. When i bought it last week on wednesday, at 60% it had 6 hours. This was the last time i checked. I know that that theoretical battery life is not supposed to be actual battery life but i'd expect it be close by an hour or two on week one. I originally had a macbook air 2012, i backed this up on time machine and used migration assistant on my macbook pro. I charged it up and checked the battery estimate, the max i could get it up to with nothing running and minimum battery was 5 or 6 hours at 100% battery. I know i sound like i'm being nit picky but but i had a look online and saw an occasion where someone noticed the same thing then reseted to factory settings and re-installed everything and afterwards was able to get 100%. So i'm suspecting driver failure due to migration assistant. Is there a way to use migration assistant and not have this happen? I really want to have it to preserve all of my setting and most importantly my applications. --> MacBook Pro with Retina display, OS X Mountain Lion (10.8), 13"