so far I havnt used it I have been using an MMM and using the onboard BEC, I am considering going beyond 6s to 8 or 10s and with the CC HV 110 or an MGM 9032 ESC, if I do that both of thoses ESC will need an external BEC and I will use it....here is a link to the one I bought

http://www.helidirect.com/product_in...oducts_id=4667