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remnants of old spot welds
#1
in using older cells harvested from other things. drill batteries. hover boards. medical packs. ect... what is the general consensus on what to do about the little remnats of nickel and spot welds left on the batteries? i tried searching for this but i prob worded it wrong.
thanks for any input in advance. Cancri.
if its already broke it is now an educational tool.... lets tear it apart now.
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#2
Dremel, grinder or just solder on it...

Best
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#3
Check out this thread: https://secondlifestorage.com/showthread.php?tid=8284

It was only a few posting down the list, maybe you over looked it.

Btw, do not dremel or sand. This removes the thin coating of nickel covering the steel casing. This will allow the casing to start rusting. Only do this as a last resort and immediately completely cover with solder.
Proceed with caution. Knowledge is Power! Literally! Cool 
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#4
these hakko sidesnips (chp-170) work great. I used it to remove the nickle strip on A123 26650 cells, that was very thick nickle strip. It use to be very time consuming trying to remove with needle nose and wire cutters. These side snips makes quick work out of it. They cost about 8 dollars on ebay, had them for 2 years and still working as new. Before I had these sidesnips, I had many cells that still had nickle strip because the needle nose couldn't remove it, these snips get everything.

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#5
Amazingly, you can actually pick up these sidesnips for about $6USD at Walmart. They are in the craft section. They have 4 different types. They also have a crimp pair that can do small wires, like dupont connectors, about 34awg(?)

https://www.walmart.com/ip/170-Ii-Flush-.../440476565
Proceed with caution. Knowledge is Power! Literally! Cool 
Knowledge is Power; Absolute Knowledge is Absolutely Shocking!
Certified 18650 Cell Reclamation Technician

Please come join in general chit-chat and randomness at Discord Chat (channels: general, 3d-printing, linux&coding, 18650, humor, ...)
(this chat is not directly affiliated with SecondLifeStorage; VALID email req'd)
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#6
Of course don't touch the cell itself, but weaken the strips enough to pull them off.
I must admit it requires a steady hand, i have had no problems so far.
My favorite is still a grinder when the strips wont come of easy.
Only do it if you are comfortable enough with a grinder.
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#7
(11-28-2019, 11:03 PM)Korishan Wrote: Check out this thread: https://secondlifestorage.com/showthread.php?tid=8284

It was only a few posting down the list, maybe you over looked it.

Btw, do not dremel or sand. This removes the thin coating of nickel covering the steel casing. This will allow the casing to start rusting. Only do this as a last resort and immediately completely cover with solder.
thank you sir. im a bit blind sometimes.  now to go searching for a charger for a 4s pack im building to experiment with submersed LED chips.  but I will search before asking. cant promise I wont ask tho. sorry guys
if its already broke it is now an educational tool.... lets tear it apart now.
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