Oh right that's not bad at all. It must be my memory failing me but I seem to remember my mates Game Gear absolutely draining batteries.No idea as I havent yet had it on batteries as they had an external battery adapter thing that I dont have... I have however ordered some "stuff" so that I can put the same LiPo config in it that is in my GG so I will be able to face them off once that is done. My GG will do about 10 hours on it's batteries.