Correct, connections are "very" important.  Last time that I used
welding cable for battery connections I used a crimping tool with copper
lugs for the starter end of the connection (with heat shrink tubing to
cover it after crimping it), and a generic battery end clamp for the
battery end of the connection.

No trouble with it after being in service for 2+ years, tho I wish I had
something better for the battery end, just because there is not that
much room in the battery box to work with.... :o).

Howard

Dennis Haynes wrote:
> Wire of that size is also available in different qualities including the
> insulation material. You can even get wire that is very flexible and
> with a double insulated jacket. You want good copper that will not
> quickly turn green. As important as the wire gauge, the connections are
> even more important.
>
> Dennis