Comment by fastball

I'm assuming 3rd parties (like Anker, Belkin, etc) will be producing batteries for this not long after it's launched that will run much larger. If we assume the Apple battery for 2 hours is something like 40Wh, a 100Wh battery (the TSA max I believe) will give you 5 hours (enough for approximately 2-3 movies), which seems like plenty.