![I built a capacitive discharge battery tab spot welder (portable, USB-C powered, no microcontrollers, thyristor-based). No custom PCBs, mostly off-the-shelf components. : r/DIY I built a capacitive discharge battery tab spot welder (portable, USB-C powered, no microcontrollers, thyristor-based). No custom PCBs, mostly off-the-shelf components. : r/DIY](https://i.ytimg.com/vi/07V15Z2JV0E/maxresdefault.jpg)
I built a capacitive discharge battery tab spot welder (portable, USB-C powered, no microcontrollers, thyristor-based). No custom PCBs, mostly off-the-shelf components. : r/DIY
![18650 Battery Spot Welding Pen, DC 4-12V Automatic Trigger Weld Machine DIY Spot Welder Pen, Accessories for Industrial Spot Welding Machine - Amazon.com 18650 Battery Spot Welding Pen, DC 4-12V Automatic Trigger Weld Machine DIY Spot Welder Pen, Accessories for Industrial Spot Welding Machine - Amazon.com](https://m.media-amazon.com/images/I/71iSELlvGNL.jpg)
18650 Battery Spot Welding Pen, DC 4-12V Automatic Trigger Weld Machine DIY Spot Welder Pen, Accessories for Industrial Spot Welding Machine - Amazon.com
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voltage - Car battery spot welder. How to reduce battery power? - Electrical Engineering Stack Exchange
![Upgraded Enhanced Rechargeable Portable Spot Welder Machine 6 Gear Adjustable Mini Small Battery Spot Welder DIY Spot Welding Nickel Strip and 18650 Battery Type-C Fast Charging 5M Nickel Strips - Amazon.com Upgraded Enhanced Rechargeable Portable Spot Welder Machine 6 Gear Adjustable Mini Small Battery Spot Welder DIY Spot Welding Nickel Strip and 18650 Battery Type-C Fast Charging 5M Nickel Strips - Amazon.com](https://m.media-amazon.com/images/I/61l3MgK8IeL.jpg)