Its only rated to 6s for cars due to high braking voltages on car controllers.. There is a review of the Bec Pro coming out in RCDRiver next month ;)
If you check this thread out you can see some performance charts of a couple of different Castle BEC's
BEC 1 = CC BEC
BEC 2 =
http://rc-monster.com/forum/showthre...hlight=torture
2 x 7955TG at stall...
BEC Number 1
BEC Number 2