So I will be going to Israel in November. I am 99.9% sure that my airplane seat won't have a power plug to charge my 3G ipod touch. I am worried about being able to keep the device charged for the duration of the flight(at least 12 hrs) so I am considering getting an external battery pack. My question is this- presuming I turn on airplane mode and lower brightness settings, could my ipod last if I just play music and MAYBE a movie(I am willing to remove video from the device if it means keeping it alive). If not, what would be a good bet? I have seen the Gum Pro/Plus and the Mophie Juice Pack, but are there other quality solutions? I want to be able to use it while charging.