Took the time out this past weekend to upgrade my rusted battery post.the contacts were corroded to the point where the inside of the terminal had no more conductive metal lol..
I read that 4 is the smallest you can go. Resistance can double up but can handle the inrush initial cranking amps. Stable amperage it can handle.You're not worried about doubling resistance?
And then you put a butt splice into it, and use a marine terminal.Correct. Anti corrosion protection.
I didn't put epoxy on it. It was bought like that. It will take periodic maintaining. I didn't go crazy when cutting the original wire. You are right it will corrode after many many years. They do the same in in the field when I was an electrician. But this correct, the more break points the more for spark gap oxidation and galvanizing corrosion. This was a good starting point from what I had before.. which was two batt post that could hardly even start the car because the metal literally wasted away.And then you put a butt splice into it, and use a marine terminal.
Dude, that's just ... not thinking things through, that's for sure!
Because that bolt and wing terminal will corrode; there's no use in epoxying the outside of the marine terminal with that there.
Also, that butt splice will corrode if the terminal would have.
You're begging for problems.
I'd get someone who has welding cable make you complete battery cables instead of butt splicing it.
Well, hell, that's what I DID for both the Dakota and the Cougar ... gaugewireandcable on eBay is one source I've used just recently.