Instead of the giant transformers you’d find in a spot welder ... so with the addition of a car battery charger purchased from Walmart, [Robert] had most of a welder on his workbench.

I did really need a spot welder ... charger. Certainly, there are many examples on YouTube of people manually connecting and disconnecting a lithium cell and current limiting resistor to the ...

Learn how to build a compact spot welding machine using a battery in this easy DIY tutorial. Spot welding is essential in various industries, including automotive, aerospace, and construction.