I've always cut the end off the transmitter charge lead and put on a receiver plug.
Very interesting. Does the TX plug put out twice the ma when connected to an RX (4.8) battery?
I have lots of wall warts and not enough receptacles on the power strip used for 2 hour per day charge. Might be a way to reduce the cable clutter and make the shop look like it knows what it is doing. The TX charging circuits are no longer necessary since transmitters now hold many airplanes. Eventually I will have only one Futaba and one JR TX in service until technology changes.
Every little simplification is important.
Bill