I've seen those brass contacts advertised before, although I can't recall where, perhaps a marine supply shop. Pardon my ignorance, but the common lead split ring terminals have worked fine on Deuces for some 57 years now, and countless other civvy and other military vehicles for maybe a century or so. Why invent a new wheel when the existing one has worked fine for 100 years? Sure, they require a LITTLE maintenance from time to time, but so does everything else.
HINT - whenever I swap out a battery, I use that neat little wire brush gizmo that you can find at any auto parts store, Wally World, etc. for about two bucks with the combo internal wire brush to clean out the inside of the cable connector and the external wire brush to clean the battery terminal. Use a rag wetted with acetone or other solvent of your choice to wipe off any oil/grease on the terminal or connector, put the proper end of the gizmo in the cable end or over the terminal, rotate back and forth a few seconds, and all crud and corrosion disappears.
THEN I coat the cable connector and terminal with Plumbers Silicon Grease. This stuff is a little hard to find, True Value Hardware and most of the big box hardwares stores carry it but you will NEVER find it by yourself, most likely you will need to find a salesperson to locate it. Silicone grease is awesome stuff. It NEVER degrades, when you coat something with silicone grease it NEVER washes off or deteriorates. I have used it on electrical connections, nuts and bolts, even lug nuts for years. I have never had an electrical connector corrode or a bolted fastener seize up since I have started using it, even on exhaust and turbo fasteners.
BTW, don't even et me started on the GM side terminal battery configuration. That has got to be the worst "innovation" in automotive design since the Edsel!
