On a side note I may add, I usually fly all my scale helis idle up off(most of the time), flat main blades and I adjust pitch curves and throttle curves as needed (using computer radio). If Im using Stock radio I usually adjust the pitch links which I normally add in a few degrees of positive pitch to comphensate for the added weight of the fuselage. As far as batteries I suggest a good 3s 1000-1320 MAH 15-20C battery(ies)