Just to be sure you used .2mm x 8mm nickel strips? The specs on the welder says that it is not for .2mm strips. Can you elaborate?
Yes I use the .2mm x 8mm nickel strips. In looking over the specs on the welder, you are correct!
Interestingly, on a recommendation the first spot welder I ordered a Kerpu 5000 mAh unit. I didn't look at the specs and just blindly order it. This DID NOT work with .2mm strips. In fact, it didn't work with very well with .15mm nickel strips! I tried welding two .15mm and two .2mm strips together I could peel the strips off apart my fingers very easily. Very little penetration to no penetration when used on the highest setting. I ended up returning this unit and ordered the Seesii 11000 mAh unit.
When I order my current unit, I could have sworn it stated it would work with .2mm strips. But I just looked on the Amazon site and at the box that my Seesii 11000 mAh came in and the Product Information clearly states the recommended thickness of 0.1-0.15mm (not for .2mm strips).
When I received my unit, I did the two .2mm strip test again, at the lower setting, the penetration was ok, but not to my liking. When I changed to the highest setting (eight), it not only welded the strips together, but put a nice burn mark on the piece of wood that I placed the strips on for welding. I could not pull the strips apart with my fingers, I had to take pliers on each strip to pull the strips apart. In fact, I had to remove a couple of nickel strips after I welded them to the battery terminal (6 welds per terminal) and they were very difficult to remove. I'm getting good penetration on the high setting from the strip to the battery terminal.
If you feel uncomfortable with this unit, I would look for one that states it can weld .2mm nickel strips!
Dennis
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