All I can say is that it is not recommended by Hacker USA. I had heard that the Matt's did burn up some stuff running that set-up. I do not know the details. I did hear they were using some throttle dual rate switches to reduce the current draw. This does not run the system at it's highest efficiency, and reduced efficiency translates into heat in the motor, controller and battery. Maybe I should try a 13XL but right now I can't imagine it being much better then the 14Xl I'm using now. The upline vertical is very impressive!