My Diy Spot Welder

This my diy high power spot welder Use 600W transformer It can spot welding 0.2/0.3 nickel strip




more details, please.

are you in electrical engineering?

I have been exposed to related work before.

This is the internal detail. 39015464_1798657456848062_6164162085698666496_n

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is that a transformer out of a microwave?

Yes, that right.



what would u charge to build another one?

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yeah… i need one of these too…

Group buy… lol

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I’ll settle for a good “how to” thread


Are you talking about the transformer or the spot welder?

The spot welder cost 228 USD :((

I am looking for can spot welding 0.2 nickel strip,but it’s too expensive…

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I am from Taiwan, so the shipping cost is calculated.

It looks really nice. Looks like a production piece not a DIY. Good work.

I took a spot welding video.

18650 spot welding 0.2 nickel strip


LOL…More robust than previous spot welders

Can you show the tip where you touch the nickel? I am building one also and could need some inspiration!

I built something similiar and it worked fairly well for my 3 batteries so far,searchweb201602_5_10152_10151_10065_10344_10130_10068_10547_10342_10343_10340_10548_10341_10696_10084_10083_10618_10139_10307_10059_100031_10103_10624_10623_10622_10621_10620,searchweb201603_13,ppcSwitch_2&algo_expid=483e5009-27ed-42aa-87b9-874da8b9a607-38&algo_pvid=483e5009-27ed-42aa-87b9-874da8b9a607&priceBeautifyAB=0

not the exact link but something like that should work.

heres the one i used

See what problems you have encountered. I am not home now.

Yes, I use this one. I don’t know the difference, so I choose the one that is cheaper.

bro $228 is NOT a bad price. This can dramatically save people money making their own battery packs!

Nice, I think I might build one, I already have made a car battery one but i dont like it much…

Have you got a parts list? I think I can order the main electronics from taobao to speed up shipping

The housing looks really nice, did you make it yourself?