This spot welder can be used to weld 18650 batteries. it uses a 12v car battery as welding current supply. typically one 40ah 440a battery delivers enough current to. A fine-spot welder is one of the few equipment where building yourself is cheaper than buying. there are already published a lot of diy spot welders, this one has.... Note that the power board is an old prototype and has been replaced by the new spot welder pcb. diy battery tab resistance fine-spot welder diy battery tab resistance.
Weld from anywhere with this diy car battery-powered welding kit. break a driveshaft on the trail and you're in deep trouble. use this portable welding kit to help. Make a must-have repair on the trail with this battery-based welding toolbox!. This spot welder can be used to weld 18650 batteries. it needs a 7-12v power source (12v recommended) and uses a 12v car battery as welding current supply..
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