RE: opto kill switch
It's a matter of risk. To me it's less risky to use Ed's IBEC than to use one extra of the most risky part in a radio system...the battery. I buy the best batteries to begin with and care for and feed them throughout their respective lives. In return, they give back all they have. It's really that simple. No need to make it any more complex.
I know people that swear by redundancy. Some of the same actually had one battery die and the other saved the day. Can't help but ask the question why did the first die to begin with? That's all I gonna say onthis subject...time to move on to better things