Be carefull on that Hayes neopreme from Tower Hobbies. The darn stuff went bad within 2 weeks. They did send me a new pack....I use that on crank pump only. Also I bought a new Futaba Fast Radio from them. Rec battery never did give any where near capacity. I sent it to them...thay would not replace it. The darn thing goes down fast...like a bad cell. So I do not buy or recomend buying from them. They got my last order....andwas buying RC goodies from them for 25+ years. Capt,n