Since I was quoted in this thread with my response to why BEC shouldn't be used with more than 12 cells I'll clarify. I was responding to a question someone asked about why he had been told (by someone else) he needed a receiver pack if using more than 12 cells. Of course this may vary somewhat from ESC to ESC but like Ryan said it is a general rule of thumb. I've never owned an SV27 nor have I ever used an SV27 ESC so I don't know if the BEC can handle 14 cells or not.

Greg