Get a deep cycle group 27 marine rv battery from Walmart and a 400 watt inverter. It will run a 32" LCD TV for several hours. The engineers on here could do the math but its at least 8 hours run time in my experience. The newer lcd tv s are very low watt usage so might even be good for longer. We did this at jack trice before we moved. Only downside was I didn't have a lock on my direct tv account and my buddy rented some porn while we went into the game. Needless to say we had quite a crowd at our tailgate when we returned at half time. Apparently the porn was more interesting than the game which was the Utah debacle.