DIY Spot Welder with Super Capacitors for 18650 Battery Pack (failed and in detailed explain)

The video includes circuit diagram, test video, welding result analysis and charging simulation for a super-capacitor based 18650 battery spot welder. It could not work reliably and was finally abandoned.

Later, I built a simple and reliable MCU controlled high-current relay spot welding machine, which was introduced in my another video.
Related videos:

DIY Reliable Spot Welder: https://youtu.be/OxWdbxqkSe4
Detailed experiment on 3 DIY spot welders: https://youtu.be/SU67KDIivOw
Mini DIY Spot Welder Power On Issue: https://youtu.be/S_BtSsf_dpE
DIY Super Capacitor 18650 Battery Spot Welder (Failed): https://youtu.be/hjrh1Y8MZeE

Видео DIY Spot Welder with Super Capacitors for 18650 Battery Pack (failed and in detailed explain) канала Rusty Ox