I have a 2.5 month old retina macbook pro and I'm wondering if the battery life is bad. I just timed it, and with screen brightness all the way up, backlit keyboard off, it's gone from an overnight 100% charge to 57% in 1 hour 33 minutes. All I've been doing so far is web browsing and watching videos on YouTube. I will update as soon as I get into single digits. Does anyone else see this on theirs?