I also have a Rock Auto racing 16v battery mounted in the car, but I have never used it. Sort of my "ace in the hole". It has a 12v post in addition to a 16v post. I have it hooked to the 12v side,but with the ground off of it. It takes about 30 seconds to hook the ground cable up. If it dosn't start then, I'll move the hot cable to the 16v side. At this point it's just ballast though .

Brian