Tom, the Batt Share actually is not a single point of failure. It is basically a PCB with a couple of diodes and to fail both diodes will have to fail at the same time, not very likley. The reason why I don't like the batteries run down differently is that I know when I hook them up to the charger they are going to take roughly the same amount of time to charge. If one takes significantly more time than the other than I Know I have an issue that needs to be looked at. In a unregulated system if one battery is discharging faster than another then upon power up the higher voltage battery will try to charge the lower thus spent capacity. There are literly a hundred way of setting these up, most work well.

Vince, what was the actual cause of the crash? If it was an interference issue then 2 receivers would have have offered no benifit. Remember a power box seperates servo and RX power so the RX see's a much cleaner DC voltage and reduces the chances of interference that may be generated within the airplane. In any event I'm sorry to hear you lost an airplane.

Shawn