Portable Spot Welder, Geevorks DIY Spot Welding Tool 99 Gears for 18650 Battery Various Welding Power Supply / 12V car battery, Automatic/Manual Touch Welding Mode

The media could not be loaded.  When I 1st got the spot welder, it seemed to work well. The tips were nice and flat and had A-sharp edge. I was holding the tips at a 45 angle using the sharp edge. The welds did not pull apart. After 15 to 20 Welds, the welds started to fail. The nickel strips would not connect to the battery at all. I kept stepping up in the power and then finally the unit burnt out. Pictures show the copper trace that burnt out like a fuse. I then cleaned and soldered it back together. Keep the tip sharpened and don't let them get Blunt and rounded. It's also important to use good connections to the battery and a battery that has a high enough amperage to give you the instantaneous amps needed. Don't think about using just a small backup UPS Gel cell battery.

The strength setting doesn't seem to matter, all it seems to care about is how much juice the battery its hooked up to has, and its pretty unreliable as far as repeatability. Sometimes it'll charge up and weld nicely, sometimes it doesn't even make a little spark, even hooked up to a massive quantity of lipo batteries with enough potential amperage to flash melt a wrench. I wouldn't recommend getting one of these, unfortunately ive yet to find a good model for welding battery terminals with.

This is fine for spot welding 0.1 strips. Keep the power below 50, and don’t lengthen the cables or you WILL blow a mosfet and get smoking. It can do 0.15 strips, but you have to raise the power to uncomfortable levels for long life.

Some tricks1. Use large battery. I was using my 100ah 12v lifepo4 battery2. Use thick wire connecting to the battery and close tight connections. I was using 8 gauge silicon coated wire.3. try to use a push welding probe 15-20 bucks .With that setup, I can use power rating 7 to weld 1.5 mm pure nickel strip very well.Hope this help!

You must have a powerful 12v source and use just enough pressure holding the elecrodes against the strip to make contact. If you push too hard, it won't weld. If you don't push hard enough, you will burn holes in the strip. Practice, and it becomes easy. My Stanley 1000 amp jump starter was not enough power, but it is older and a little weak when jump starting cars.

made one good weld then quit wouldnt trigger at all.would trigger in beggining but wouldnt weld nickel to battery. nickel would fall of. wont trigger weld at allnow . junk. more china junk

You will burn it up as is.Two resistor changes is the key to success. Just rebuilt 2 drill motor packs with the modified welder. Using an Odyssey battery I removed from my airplane, only removed because of time. More than enough power for welding over 150 spot welds. Extremely pleased thus far

I didn't like it, it didn't put out a pulse. it was more like a dream, I couldn't use it