Alligator clips connected to a pigtail that's strain-relieved
so they can't be accidentally yanked off.

Joe Magiera wrote:
Does anyone have any ideas or know of
any parts that I can make a nice solid non-permanent connection to standard
battery connection terminals (and not ruin the battery connection terminals
in the process)? I'd really rather not make a solder connection on this
one, I'd like it to be able to run on batteries again in the future without
having to give it a major overhaul to convert it back.