This was the OEM setup
Note the OEM cabling with screw on steel connectors
I build my battery cables out of the best materials available: Cabling is 2 ga welding wire (which I much prefer over auto grade which is not as flexible) all my connectors are solid copper, silver and soldered in using solder 'bullets' especially designed for he type and size cabling-connectors I am using. I also heat shrink-wrap my connections
Closeup of cabling, copper connector and a solder bullet, ready for the torch
The finished product