4s & 9xl or 5s & 10xl ?????

[rootar]

so the 5s and 10xl it is, james you dunno if id beable to make a 30 minute main on a Nue enregy 5s 5000 30c/60c pack i can get a REALLY good deal on this 5s and its not outragously heavy either. i know itd have all the punch in the world with this pack but if geard to only run 40mph do you think ill get the runtime i need? if not whats a better pack if there is one?