I am going to be sending up my 32gb iPhone 4 attached inside of a styrafoam cooler to a weatherballoon to record hd video of the earths atmosphere from 90,000ft up. It should take 1.30 - 2 hrs from launch to impact back to the ground. I will have the styrafoam cooler with newspaper and hand warmers inside to keep the inside temp warm. I have a SPOT gps messenger just incase of no Cell phone service I will still be able to track it, the SPOT messenger relies on GPS satellites. Is it true that their is a record limit of 50min at a time? If so is their an app or something to make it record longer? Also I will be running mobile me to track the phone also + hd video recording on the phone, with a full battery will it last 2hrs? Or should I make an external battery adapter consisting of 4 AA batteries which I believe is enough for 1 full charge. Thanks.