The new receiver from FlySky came today. It says FGr4 V2 on the outside and it's a newer hardware version (1.5 instead of 1.4) on the inside. It also says the voltage range is 3.5V to 12V rather than 3 5V to 18V on the non V2 ones I had.

I'm not sure when I'll be using it since I already put the smaller FGr4S receiver in my ebuggy so both cars have that now.