Hi tom.i am that ny guy that built a scale spacewalker.got a question for ya.i was going to fly my gas plane with an ibec and one battery but thought about it and am installing a redundant system hers the thing I reconfigured the set up and plugged my second battery into an open port on my ch futaba rx. The first battery is in another open port with a switch.should I get a miracle switch?then I have 2 switches 2 batteries same chemistry life.to one receiver.i was going with 2 batteries one switch but that seems to negate the goal for redunacy.As always appreciate your advice.dennis