You have to make a video of this 
i love the Idea of using copper insted of Nickel metal. So much Better current handeling, but i find it hard to weld.
I didnât tape this pack as this is pretty much the same as other packs i did earlier. I did copper on many videos.
Copper 0.1
Electroplated copper 0.2 (warning! Not recommended)
Electroplated copper 0.1 lights pack
Copper 0.1 huge bike triangle pack
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I have some 0.15 copper, impossible? So far not had luck welding to aa cells, bilirvibcanbwrlf nickel to it.
Strangely Iâve had a better result from a 3s graphene then a 2 x 2s in series
Where do you get copper, I would like to try on my spot welder/
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I got solid welds on .15 nickel to .2 copper by using my heat gun. Not so practical.
I noticed your tomato juice pack cell holdersâŚ
I made this out of wood. Works real good as a tray for gluing and if you flip the batteries on their side for welding as well.
I also use it for cutting the nickel strips. I marked the board for certain lengths. Then you hold your scissors against the wood side and slide the nickel to the mark on the board. Perfect cuts every time in rapid succession.
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I like these for holding cells
https://dzhj8173mkary.cloudfront.net/static-file-transform/887/thumbnail%2Cw_500%2Ch_500%2Cm_a.jpg
Edit: harborfreight has them cheap
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Ebay,but at 0.15 itâs probaly too thick iirc 0.1 is the thick @rojitor tried/tested
Obviously I was talking about this and nothing to do with falling asleep after too many beers whilst in post-edit mode
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I didnât test 0.15 i did 0.1 and 0.2 in my opinion beyond 0.1 is too risky for both machine and user but thatâs just my opinion. If anyone succeeds with 0.15 please share the experience with us.
So far just welder beeps & scortching where penetration does happen. I can manage to weld nickel onto the copper, just not able to weld the copper to the cell.
I have not tried on a 18650 cell so far but afaik the casing is the same meterial as an AA batteryâŚso.
In the end I have just bought some 0.1mm copper off eBay, I donât want to kill my boss welder
Make sure the contact is perfect and the pressure is good. Bad pressure will burn the metal and bad contact/pressure will make holes, HUGE holes that would pierce the can and ruin the cell.
This is an example of bad pressure. The weld is acceptable but the metal is damaged. A little less pressure would have caused a hole.
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This is whay Iâm practising on dead AA cells 
Also not gonig to try any more with 0.15mm copper,0.1mm copper is the way forward.
Thanks as always
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Here is my cell rig⌠shit just laying around
I love seeing all the little ways everybody does everything.
It is always the details of things that are so interestingâŚ
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I use what i have around. Tuna cans, boxes⌠Donât care at all as long as the result is good.
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So a knife blade from a hobbyknife is about the same thinkness as 18650 cells, and could be used as i guide line ?
I think so. Success on blade has been guaranteed success on cell so far for me. I am not sure about the exact thickness but i can tell from personal experience that the blade test works. Nickel on nickel or copper on copper have nothing to do with that test and may differ with the results on that field.
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What is a good battery you guys recommend ?
You mean lipo? 3s graphene or nanotech 5000 mah or anything Big with very high C burst. Most C are exaggerated so look for big numbers. 5000 mah and 130C should do.
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