Hi Dave and Steve Thanks for the replies, I am comfortable with using this Rx with duel Lipos or any duel battery pack and with the new HV and wide voltage range servos this Rx should be very popular.In fact feel happy to use matched duel packs on any Rx whether its a std Rx or power safe type and with or with out diodes but that's a debate for another time. What I was wondering was if this Rx is smart enough to draw from two not so evenly matched power supply's when under load not just pick the highest voltage. Its not stated that this Rx is not suitable for use with duel regs but I know its a known problem when using regs in parallel and hoped JR had come up with a solution. Many flyers I know use duel regs in parallel with success's, I just think it through too much and cant bring my self to do it my self. I guess one answer and probably a good recommendation is that with non Powerbox duel reg system is that its at least able to cope with just one of its duel regs being able to take all the load at any one time with ease but no matter how this particular Rx draws its power its good to know its always got a second power source.