I will be building somewhat of a housing for the batteries so they will be velcrowed down and stay put. These are some of the lipos I have, they are dinogies from mark f. I never put a plug in for anyone but of all the lipos I've run these are stateside shipped, guaranteed, and preform outstanding. Had these packs for a year and half, I've pulled over 400amps over 1400 watts and they have minimal ripple, voltage drop while charging them at 20 amps all the time. If anyone out there is in need of racing high demand lipos these are some of the best if not best, better than hyperion, Grimm, ect. Just trying to share some of my good experiences.