The device is capable of spot welding thin metals such as foils and ... [Radu] started out using a relatively small capacitor array to power the device, but has recently upgraded to a 1.6 Farad ...

[Aaron Christophel] has a battery spot welder that costs a not unreasonable ... Alongside all this, there’s also a small chip for that power bank functionality. Charging is via USB-C, though ...

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.