I don't know how long these have been around, but it is new to me.
http://www.amazon.com/dp/B00AMEJHWQ/..._26725410_item
It has always been a pain to put small power wires onto the assorted posts that a lot of the power comes from. Small wire, big ring, terminals aren't all that great.
This looks like it could solve some problems, for me at least. I ordered a couple for the charging upgrade, on for grounds and one for power.