Quote Originally Posted by darnthedog View Post
I found this DYI Battery spot welder:https://youtu.be/o4NaDMoEHxU

There is a ton of building videos and explanations of how to. However I would be cautious in that you can be working with deadly currents and voltages if you build a big enough pack. So if your not understanding basic electricity I would avoid this project as you can be hurt if not killed from the shock. Even with D.C. battery voltage. Just takes the right conditions and path.
Thanks. This seems to be better system than rewiring a microwave transformer.