Today I bought some 2/0 lugs to terminate the 2/0 AWG welding wire used to hook the batteries controller and motor together. Here are some pictures of the lugs, the lugs crimped to the wire, and the finished product complete with 1" heatshrink tubing to reduce the exposed metal.
This picture shows the rough size of 2.75inches long, about 3/4" in diameter.
This picture shows one of the lugs crimped onto the 2/0 AWG welding cable. I used a bench vise to crimp the opening on the lug.
This picture is one finished terminal including black heat shrink to protect the exposed copper area.