After using only one type of battery the Venom Power 2S Li-Poly(7.4V/3200mAh) had Universal Connector thats why i got it,own 3 of them, they cost around $35 each which is fine to pay for a LiPo and lasts up to 18mins with a full charge. But I'm going to start racing and Is there any batterys that out due the ones i own? Which is your golden battery you use?