From a safety point of view, most of us commence our flying day with a range and failsafe check but how do those of you using power safe receivers know both batteries are feeding your receiver. I know Chris always checks the recharge Qty of each battery which is how he has detected the problem but isn't it too late AFTER your flying session.
Would it not be better if as part of your preflight checks to disconnect each battery in turn BEFORE flying.
I don't have any powersafe Rx but feed all my dual power feed RD921 Rx with two batteries via dual switches & diodes Or a dual powerbox
switch so i can check each battery will individually power the R/C
the regulators that Jay and paul are using have telemetry on them, they tell you voltages of both packs and the rx tells you the voltage it is seeing. You can then set alarms for minimum voltages.