Hi, got a little dilemma here, perhaps you guys can help me and provide some advice. I will be flying a long distance flight soon. Its a 8 hour flight + 2 hours transit + another 8 hour flight. I am torn between taking my Asus laptop or my Macbook Air 13 mid 2011 i7 1.8Ghz. I've taken the Asus on the very same flight before, the Asus has a removable battery, and each battery lasts around 8 hours, so it will easily survive the flight. However the power brick, the power cord, and the extra battery all adds a lot of weight. Whereas the Macbook is, as you all know, far lighter, even the power brick is more compact. The battery is recently replaced, currently with a charge cycle of 5. So I was wondering: - Anyway I could squeeze 7 to 8 hours from the Macbook Air, I won't be using the Wifi, I might watch a few movies. - I'm not quite a Mac guy, any chance I can squeeze that kind of battery life in Windows? - If I have to stick to MacOS, thats alright, which version of MacOS has the longest battery life? - After the first leg of the flight I'll head to transit for the next connecting flight. There are lounges with power sockets, assuming the Macbook's power is almost depleted by then, how much further can it charge in 1.5 hours? A little bit out of topic: A friend has given me on of those cigarette lighter charger for Macbooks, I know its meant for cars, but do planes have them as well? Thanks for reading!