Quick way to find out if its your battery your using (power wise). Hook it up to your car battery if thats not enough power to turn it over then its the box. I broke my RB in hooking my box up to my car batt worked perfectly. Now that the motors broke in it turns over fairly easy. Heating up the engine is always a good idea especially for break in did that for mine. Saved me alot of frustration turned over on 2nd try.