Does soldering damage 18650/21700 cells?
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- čas přidán 1. 11. 2023
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Testing does soldering reduce samsung 30t cell capacity.
Seems like soldering does not damage the cell at least on short term.
#18650 #soldering #spotwelding - Věda a technologie
Nice to see that solder can actually performs better than spot weld
soldering cant damage the cell if you dont heat it a lot
Exactly, there’s a lot of guys misleading people on CZcams about soldering is bad, however there’s a few guys who solder and make it work so it’s good to see the facts
Yea. Using powerful soldering iron with big tip and good technique you are unlikely damage the cell. Of course spot welding nickel is faster and easier, but spot welding copper is hard.
That variance could of course just be the normal variance between two cells. For this to be meaningful you'd have to do this test to a bunch of cells. Also, is there any damage that wouldn't be apparent from this test? How to test the longevity, stability and integrity? And what else could be affected by the relatively large amount of heat introduced by soldering?
Yea, its not long term test. I can't say if it does damage the cell on long term. And yes it would be better if I tested many cells
If you point a temp gauge at the top of the soldered one, you'll see vastly more heat into the top 20% of the batt vs spot weld. We just don't know if that extra heat does any long term damage but it probably isn't good for it.
Yea, it would be interesting to see the battery on thermal camera when soldering
YES IT DOES!!.. what you forgot is that the damages are not hapenning immediatly, but over the cycles and time. The electrolyte boil inside and create additional gassing. The spotweld are heating to 2500F the nickel plating inside that is in fact vaporizing it, creating contaniment in the fragile electrolyte stability. Your test showing test right after the soldering is irrelevent
Yea, this is only short term test. I'm not sure about long term affects. I have had couple soldered packs many years with no problems. Of course I can't really say if soldering has decreased the capacity on long term or not. But thanks for the additional info. I think that I will try to do my next battery with nickel/copper sandwich technique.
Funny rhing here. "1st World countries" worried if explosions and burns. the "3rd world" enjoy electric toys and expreriments.