[Aaron Christophel] has a battery spot welder that costs a not unreasonable 30 euros and can also be used as a novelty power bank. He subjects it to a test and teardown in the video below the break.

That need is what led [Erwin Ried] to purchase a small, battery-powered spot welder from a maker in Korea and test it out on nickel strips. The spot welder [Erwin] used is the work of a user by ...

In this DIY project, learn how to build a simple 1.5V battery-powered welding machine at home. This clever technique uses a ...

Watch as a simple 1.5V battery is transformed into a DIY welding machine perfect for soldering wires. This genius idea brings a new way to handle small welding tasks right at home. Explore the power ...