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 ...

The night vision, meanwhile, isn't a game changer but is enough for a large-ish room or small ... It's battery powered, so you can put it just about anywhere you like, and it has a spotlight ...