Yes, I have noticed that the external battery is required on the cheaper Jameco's.

I will probably go with that one for my power box, since I have the voltage available, but will stick with the I4C one for the planes, since I don't want to stick in another battery.

I have one in my current flying Bandit. It just did not have a label on who made it, which is why I posted originally. It looks exactly like the I4C unit. It came in a D/F plane I bought a couple of years ago.

They sure are pricey though.

Thanks again for the help

Tom