Mind you I have no Lipo experience.....yet[>:]. But 3s equates to 11.1volts correct? 12 cells = 14.4v. 4s = 14.8v. Are you saying that 14.8v will fry the BEC? I'd be surprised at that as many people have run 14nimh cells w/o disconnecting the BEC. (16.8v). Can you clarify. 1 lipo cell is 3.7v right?