JR Sport ST47BB and 6.6v Receiver Battery.....
#2
Since the ST47BB supports 5 cell Nixx operation, there should be no issue. A 5 cell Nixx battery is slightly higher in voltage when fully charged than a 2S LiFe. Only the nominal voltage of the 2S LiFe battery is .6V higher than the 5 cell Nixx.
Pete
Pete