I recently discovered something new (to me) which are Wago Lever Nuts. I am doing some home rewiring and discovered these on a Youtube video. They work with solid or stranded wire. Each wire has it's own hole to go into and a lever snugs it down. It also releases the wire by lifting the lever back up. They come in many sizes for multiple connectors. I often see posters wondering how to connect multiple ground wires from the battery pack and I think that these would work well. My local Lowes didn't have these but I bought several assortments from Amazon. These are a great alternative to plastic wire nuts. I got packs of 50 for about $12 each.
http://www.wago.us/wago/press/press-...etail-1122.jsp