1/8 buggy problem

Have you even read the instruction manual that came with the XERUN 150A????

How have you set your LVC? Is it set to auto cell detect? What I mean did you set the LVC for 3S battery or is it in auto detect mode?

And what the hell did you solder that with???? Cigarette lighter? That is some of the worst soldering I have ever seen. No joke there. Get that fixed up asap. If you can't do better take it to a hobby shop and pay to get it done. That is just asking for a disaster the way it is now.