Query
GENERAL MOTORS and COPPER CLAD ALUMINUM battery cables. The tin coating GOES AWAY. I have successfully soldered CCA which would improve durability. I have a set of unsoldered COPPER cables in my trunk which I criminally neglected to solder when they were new. They will remain useless until I undo all the damage and solder the 4-gage to the cable strands + run an 8 gauge shunt from clamp gripper across to the other pad gripper (the copper pads with teeth).
Silicone is flexible but easy to cut and tear.
Hypalon (neoprene) makes a good battery cable insulation as does EDPN