Quote Originally Posted by DennisThornton View Post
Perhaps I missed where is it available?

I found one source:

https://www.banggood.com/DIY-Portabl...r_warehouse=CN
Because of Youtube's strict rules on recommending products, etc. I stay away from citing specific sellers, but if you google "12V 18650 Battery Spot Welder PCB" they pop up in many places.