i know the macbook air is not meant to be a gaming laptop, but you can play games with it(i dont want to discuss about that!) so can anyone tell me how long it will last with a full charge brightness at around 70% and wifi on? is it like most windows laptops who wil only run like 2 hours? or will it last longer? i read that it has 9hours battery life but i imagine its not for gaming. and btw, how long does it take to charge it from 0-100%?