Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
removel of spot welds
#1
Hello all.  I am curious to hear what anyone and everyone is doing to clean the little spot welds off of the ends of the batteries after pulling the nickle strip off.  I have tried the dremel tactic but am worried about getting abrasive material under the positive cap.  Fishing for other ideas and would appreciate any input. 

I have also considered not pulling the nickle strip off of the battery and just cutting it on either side.  Has anyone build a pack with cells harvested this way?
Reply
#2
I been using these sidesnips they work extremely well to get all the small pieces left over. These sidesnips are the right tool for the job and I tried almost everything. It does quick work of a very time consuming job.


hakko chp-170  cost about 8 dollars
Korishan likes this post
Reply
#3
Use the side snips like Jonyjoe says, and instead of dremel, lay a sheet of sandpaper flat and rub the cell on that instead. Filings will be hard to get under the cap that way.

Also, unless you absolutely need a smooth surface, it's not idea to remove all the way down as most cell casings are nickel plated steel. If you remove the nickel plating, you are exposing iron to the air which can then rust. This is more of an issue on the Neg end than the Pos as the Neg end is directly the cell body, the Pos end is separate.

If you plan on soldering the cells later, go ahead and put some solder on them to cover the scratched area. Or put a little grease to keep the moisture off. Then clean with alcohol just before soldering them during assembly. This will keep it protected. This would be like petroleum jelly or something like that, something easily cleaned off. This is only if the cell will be sitting for a long while before you can get to them.

If you plan on spot welding them later, don't even worry about sanding the tabs down. And in fact, don't pull the tabs off at all, just snip closs to the cell and leave the original tab still spot welded. It's easier to spot weld nickel strip to nickel strip than to the cell casing, plus you don't put no where near as much heat into the cell that way.
And, it's also possible to just solder directly to this strip as well. Again, it'll drastically reduce the amount of heat that is put into the cell.
Ibiza and krlenjuska like this post
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)
Reply
#4
Thanks, great advice.
Reply
#5
(10-06-2019, 03:30 PM)jonyjoe505 Wrote: I been using these sidesnips they work extremely well to get all the small pieces left over. These sidesnips are the right tool for the job and I tried almost everything. It does quick work of a very time consuming job.


hakko chp-170  cost about 8 dollars

Hi buddy, would you mind sharing the purchase link?
Regards,
Loce Smith
Reply
#6
(Yesterday, 01:52 PM)locefaj Wrote:
(10-06-2019, 03:30 PM)jonyjoe505 Wrote: I been using these sidesnips they work extremely well to get all the small pieces left over. These sidesnips are the right tool for the job and I tried almost everything. It does quick work of a very time consuming job.


hakko chp-170  cost about 8 dollars

Hi buddy, would you mind sharing the purchase link?

You can buy them here, $7.49 with Prime https://amzn.to/2MfK6kv
Reply


Who read this thread?
51 User(s) read this thread:
18650.ro (Yesterday, 03:12 PM), drnickriviera (10-06-2019, 10:38 PM), Jonisingt35r (10-06-2019, 06:44 PM), schmo (10-10-2019, 12:59 PM), 100kwh-hunter (10-12-2019, 04:55 PM), BarryG (10-06-2019, 07:39 PM), Lucan (Yesterday, 02:38 AM), winny (10-12-2019, 12:22 PM), intra (Today, 03:20 AM), kevinjaye (10-07-2019, 02:07 AM), ajw22 (10-10-2019, 12:47 PM), Eduardo Kang (10-07-2019, 08:56 PM), AT1411832 (Yesterday, 02:14 PM), iNeedMoarProtection! (10-10-2019, 11:35 PM), locefaj (Yesterday, 01:52 PM), Pilotfromdk (10-14-2019, 07:05 PM), xyoung347x (10-11-2019, 06:26 PM), Gadget8 (10-10-2019, 12:33 PM), TahoeJoe (10-11-2019, 07:08 AM), juliomgm (10-10-2019, 04:45 PM), tara12 (10-09-2019, 06:03 PM), amerrigan (10-10-2019, 01:23 PM), BatteryMooch (Yesterday, 05:02 PM), krlenjuska (10-07-2019, 12:26 PM), richie241 (10-11-2019, 09:34 AM), camthecam (Yesterday, 09:50 PM), Bastler_Ro (Yesterday, 01:56 PM), Oz18650 (Today, 02:26 AM), ChrisD5710 (10-07-2019, 07:37 AM), mr_hypno (Yesterday, 07:01 PM), Geek (10-11-2019, 12:21 AM), jdeadman (Yesterday, 03:29 PM), PAF (10-07-2019, 07:22 AM), Korishan (10-11-2019, 12:12 AM), Majorphill (10-08-2019, 08:22 AM), mike (Yesterday, 02:40 PM), Sean (10-10-2019, 04:58 PM), rev0 (10-10-2019, 11:31 PM), Crimp Daddy (10-09-2019, 05:53 PM), jonyjoe505 (10-06-2019, 03:31 PM), Wolf (10-10-2019, 01:30 PM), Beholder (10-10-2019, 05:07 AM), emuland-metroman (10-12-2019, 11:42 AM), chuckp (10-10-2019, 09:13 PM), w0067814 (10-10-2019, 10:55 PM), djotter (10-08-2019, 08:45 PM), Jim Jr. (10-06-2019, 09:55 PM), Riplash (10-06-2019, 03:31 PM), Bubba (10-06-2019, 10:43 PM), Ibiza (Yesterday, 08:19 PM), daromer (10-06-2019, 03:49 PM)

Forum Jump:


Users browsing this thread: 1 Guest(s)