So I've seen different extremes posted all over here, figured I'd try to poll it and consolidate all of the results. The poll assumes that you are at around %50 brightness, keyboard off, have flash disabled and are doing light web browsing with maybe itunes opened. Under these conditions I get around 4 hours. This is my third i7 and I've gotten the same results on all three. Probably going to give up and keep this one. So how about you?