RFR trouble, at wit's end.

So our RFRs have never worked properly - exhibiting the low-battery constant reboot cycle since day one.  I have stopped using the internal charger completely and use my nice MAHA 8-bay chargers instead.  The remote is now completely useless, lasting 10 minutes before dropping into the cycle, whatever batteries I use.  It's going in for repair for the last time before I pack both RFRs up and ask for my money back so I can buy two iPads.  Is anyone using their RFR successfully? How?  

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