I've heard two stories where the ESC let go with 14 cells (IB4200WC's). But there alot of folks running 14 of the 3600's. There's a great video out there of a SV on 14 3600's with a CF48 prop. Let's see.....
here it is! My favorite SV video I think. That's the way is should run.

http://www.youtube.com/watch?v=pTZCMnNdhbU