I have seen n here before ppl have said what kind of batt green smoke is? I need a new one and sure don't want to pay $50 for a new one from the store. I maybestuck with these till I get this all figured out. I found a brick and motor shop that carries refillable carts, now I need a couple more batteries since they sure don't last as long as my tank or my vv box, which is broke 
