The most acid resistant terminal for a battery is lead coated copper.
Copper can be crimped. Lead crimps like a lead balloon floats.
Tin offers some protection against battery acid but it will turn gray then black then the green appears.
Lead coated copper lasts for years, however, it is a hazard to solder. And lead is so soft that crimping may make it flow down to the point of exposing the copper beneath.
I have an MSA Mine Safety Appliance, full face respirator with Pb filter cartridges.
But I see now the primary source Quick Cable has de-listed lead coated copper battery terminals.
If I must use bare copper ring terminals I dunk them into molten lead quickly then shake the assembled terminal. This is usually used for salt laden seashore air connections like service panel wire and cable connections. Lead/aluminum interfaces are approved in panels. But in this one case I melt the PVC insulation into the cable stranding. It stops salt air from traveling up the strands of copper. Circuit breakers get partially dunked into low viscosity anti corrosion compound. Tropical seashore dripping humidity has got to be one of the more challenging jobsites I have endured.
NO KORRODE is nothing more or less than dollar-a-gallon cosmoline. It does zero to remove corrosion.