CC BEC ,design flaw.

[BrianG]

If you are electronically inclined, a voltage sensing switch can be added to the output of the CCBEC so if the output goes above a set value (~6.5v should be good), the circuit simply cuts power. Basically just an op-amp with the CCBEC output voltage fed to the + input of the diff amp, and create a reference voltage (6.5v) using a zener and resistor on the - input of the diff amp. The output of the op amp can be a PNP transistor (probably a darlington) or a FET that actually does the switching. Should be simple enough.