Beginners Guide to Processing 18650 Cells | Cell Database


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Spot weld residuals
#1
The cells I'm breaking apart are currently spot welded.  I can pull the majority off easily enough, but there are small remnants too small for pliers to grab.

Any advice on removing these bits?  Dremel?  Chisel?

Here's a pic to be clear what I'm talking about.


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#2
I just flatten mine on the bench and don;t worry about it
Korishan likes this post
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#3
I just tap them down with the side of my pliers. No need to try picking them off.
Korishan likes this post
Solar Setup: 9x 320w panels, PCM60X charge controller
Battery Setup: 14x 120 cell 18650 packs, 48v configuration

Recommended Items:
Opus BT-C3100, Cell Heat Shrink, 4-Cell Holders
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#4
Thanks for replies.  Does it make a difference if you're going to spot weld the end vs. solder?
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#5
(09-07-2017, 05:47 PM)Travis Watson Wrote: Thanks for replies.  Does it make a difference if you're going to spot weld the end vs. solder?

Soldering doesn't matter, I just solder right over them. I would think you need as clean a surface as possible for spot welding, not sure since I have never tried it personally. If you're concerned, you can very carefully tap the end of the cell against a bench grinder to remove the nub that's left.
Solar Setup: 9x 320w panels, PCM60X charge controller
Battery Setup: 14x 120 cell 18650 packs, 48v configuration

Recommended Items:
Opus BT-C3100, Cell Heat Shrink, 4-Cell Holders
Reply
#6
Spotwelding you need to have it a bit cleaner otherwise you might get issues getting proper contact.
mike likes this post
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daromer (09-07-2017, 06:46 PM), SolarWind (09-08-2017, 05:51 PM), Travis Watson (09-07-2017, 09:46 PM), prads34 (09-07-2017, 05:18 PM), Geek (09-12-2017, 05:00 AM), SimonW (09-08-2017, 04:59 AM), Swake (09-08-2017, 12:22 PM), Grumplestiltskin (09-17-2017, 07:45 AM), Thomas Koorneef (09-08-2017, 01:10 PM), v850tw (09-07-2017, 06:47 PM), Stefaan De Ridder (09-07-2017, 06:51 PM), Hanssing (09-07-2017, 06:31 PM), watts-on (09-08-2017, 09:43 AM), mike (09-07-2017, 06:56 PM), Majorphill (09-09-2017, 02:33 AM), Korishan (09-07-2017, 08:27 PM), Prahe86 (09-07-2017, 04:48 PM), flight4900 (09-08-2017, 01:53 PM), jdeadman (09-08-2017, 02:37 AM), wim (09-07-2017, 06:49 PM), frnandu (09-10-2017, 01:09 AM), Jeremy Choy (09-07-2017, 07:10 PM), jesse.rizzo (09-18-2017, 10:05 PM)

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