Description Hummer H1 Battery Cables. We make these in house from 2/0 high strand count (super flexible) welding wire.  We use a 16ton crimp tool to insure a solid connection and then heat-shrink over them to keep the elements out. The Copper ends are for the battery side and the Tinned Copper (silver looking) goes on the starter. These were made for Hummer H1 with Diesel engines 6.2L NA, 6.5L NA, and 6.5L TD.