In the below video is a water battery being demonstrated which is very cool on it's own. This water battery produces 10 to 15,000 volts every few moments.
Supposedly, if instead of water you use a heated metal liquid it will produce two Monopole Magnets when cooled.
I say supposedly cuz I only saw it done in a YouTube video. Unable to locate that video now & I have not tested it for myself. However, it makes sense to me and as such believe this could be true?