I ordered 2, opened them up out of curiousity, and found out that the wires inside are quite thin. Wouldn't send any considerable amount of power through them.
I removed the 2+/2- wires and replaced the 1+/1- wires with thicker ones, 4 sets of wires would make it so that it wouldn't go back together.
Otherwise these things are great, solid aluminum housing so they'll last a long time