Beginners Guide to Processing 18650 Cells | Cell Database


Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
Bob's Powerwall Project
#11
I only test 1 time as well. I doubt they go better after recycling and if they do... thats perhaps 1 cell in 100... Spending that much extra time on doing it is not worth it Smile
Follow me! >> YouTube / Forum system setup / My webpage  Diy Tech & Repairs

Current: 10kW Mpp Hybrid | 4kW PIP4048 | 2x PCM60x | 83kWh LiFePo4 | 10kWh 14s 18650 |  66*260W Poly
Upcomming: 14S 18650~30kWh | Automatic trip breakers, and alot more
Reply


#12
This is great news, tomorrow I should get 2 more OPUS chargers... I should be able to get a lot more done.
mike likes this post
Reply
#13
(06-06-2017, 04:54 PM)Robert Baumer Wrote: This is great news, tomorrow I should get 2 more OPUS chargers... I should be able to get a lot more done.

They're really fast. With a few of them on your hands, you'll get through cell testing quickly Smile Love my Opus, glad I switched from the Foxnovos. My test amount per day has almost doubled with the same amount of chargers.
Reply
#14
(06-06-2017, 05:02 PM)mike Wrote:
(06-06-2017, 04:54 PM)Robert Baumer Wrote: This is great news, tomorrow I should get 2 more OPUS chargers... I should be able to get a lot more done.

They're really fast. With a few of them on your hands, you'll get through cell testing quickly Smile Love my Opus, glad I switched from the Foxnovos. My test amount per day has almost doubled with the same amount of chargers.

Mike, I found the opposite to be true, on a 1A discharge the opus avgs about 500mA, a side by side discharge of  a 4400mah(pair of cells) battery took 8hrs on the opus, 5.5hrs on the foxnovo, I chose pairs with identical resistance to do the tests
 CyberWall #1 DC2DC 7S80P 2300mAh avg Cell #2 DC2AC 7S80P 2200mAh avg Cell LG MF1
Chargers: 1xEV-Peak CQ3 400W 4 Chan(with DIY 6S cradle allowing 4x6S1-3P) 7x Foxnovo 4S  -- 20xTP4056
Reply
#15
(06-06-2017, 05:09 PM)Scepterr Wrote:
(06-06-2017, 05:02 PM)mike Wrote:
(06-06-2017, 04:54 PM)Robert Baumer Wrote: This is great news, tomorrow I should get 2 more OPUS chargers... I should be able to get a lot more done.

They're really fast. With a few of them on your hands, you'll get through cell testing quickly Smile Love my Opus, glad I switched from the Foxnovos. My test amount per day has almost doubled with the same amount of chargers.

Mike, I found the opposite to be true, on a 1A discharge the opus avgs about 500mA, a side by side discharge of  a 4400mah(pair of cells) battery took 8hrs on the opus, 5.5hrs on the foxnovo, I chose pairs with identical resistance to do the tests

I'm pretty certain the 1A setting on the Foxnovo doesn't even pull 1A. It wastes so much time charging between 4.2 and 4.22v that don't even matter. Are you sure your Opus is not a Chinese copy and that it's set to 1A? That sounds VERY unusual.
Reply
#16
(06-06-2017, 05:10 PM)mike Wrote:
(06-06-2017, 05:09 PM)Scepterr Wrote:
(06-06-2017, 05:02 PM)mike Wrote:
(06-06-2017, 04:54 PM)Robert Baumer Wrote: This is great news, tomorrow I should get 2 more OPUS chargers... I should be able to get a lot more done.

They're really fast. With a few of them on your hands, you'll get through cell testing quickly Smile Love my Opus, glad I switched from the Foxnovos. My test amount per day has almost doubled with the same amount of chargers.

Mike, I found the opposite to be true, on a 1A discharge the opus avgs about 500mA, a side by side discharge of  a 4400mah(pair of cells) battery took 8hrs on the opus, 5.5hrs on the foxnovo, I chose pairs with identical resistance to do the tests

I'm pretty certain the 1A setting on the Foxnovo doesn't even pull 1A. It wastes so much time charging between 4.2 and 4.22v that don't even matter. Are you sure your Opus is not a Chinese copy and that it's set to 1A? That sounds VERY unusual.

Got it from Amazon, pretty sure its legit, Yeah the foxnovo doesnt really do 1A either but its much closer being 5.5hrs for 4.4Ah vs 8hrs and yes the 4.20 to 4.22 time is frustrating, I tend to switch them to tp4056 to finish charging once its at 4.1ish on the foxnovo. Also I seriously missed having a beep on completion, and the intermittent discharge causes the results to be inflated, I was getting 100-200mAh more on the opus vs foxnovo on the same cells
 CyberWall #1 DC2DC 7S80P 2300mAh avg Cell #2 DC2AC 7S80P 2200mAh avg Cell LG MF1
Chargers: 1xEV-Peak CQ3 400W 4 Chan(with DIY 6S cradle allowing 4x6S1-3P) 7x Foxnovo 4S  -- 20xTP4056
Reply
#17
(06-06-2017, 02:52 PM)mike Wrote: I think you are wasting time and electricity doing a refresh test (3 iterations). If the cell is bad, it's going to show poor performance on the first test, in terms of heat and/or low capacity.

yes, that's right. Me too, I'm just doing one charge/discharge/charge cycle. But onlöy the discharge part is done by my OPUSses, both charge parts are done by TP4056s. I made two banks of them, one for pre-charge and the other one for charging after the test, so I don't get confused which cells are already processes and which are not...
mike likes this post

Cells tested: 4238 (overall: 8077 Ah, average: 1906 mAh)
Cells in production: 2240 (overall: 4704 Ah, average: 2100 mAh)
Powerwall config: 7s320p, 672 Ah, 16 kWh
What's left: my current grid consumption

Reply
#18
(06-06-2017, 07:59 PM)owitte Wrote:
(06-06-2017, 02:52 PM)mike Wrote: I think you are wasting time and electricity doing a refresh test (3 iterations). If the cell is bad, it's going to show poor performance on the first test, in terms of heat and/or low capacity.

yes, that's right. Me too, I'm just doing one charge/discharge/charge cycle. But onlöy the discharge part is done by my OPUSses, both charge parts are done by TP4056s. I made two banks of them, one for pre-charge and the other one for charging after the test, so I don't get confused which cells are already processes and which are not...

I just ordered the parts to build 40 of those TP4056 and since my computer PS can handle up to 120amp, I should be good to go.....

Here is the video I watched: https://www.youtube.com/watch?v=KoHtxZG7leQ

I bought 4 packs of 10 of these: http://www.ebay.com/itm/272584526723_trk...EBIDX%3AIT

and I bought 5 sets of these: http://www.ebay.com/itm/172546327816?_tr...EBIDX%3AIT

I'd like to find that wire stripper he uses in the video.

-Bob
Reply
#19
Robert, your 1st ebay listing is no longer valid.

What I would recommend with soldering up the TP's like in the video, if you do more than the 5 shown there, is to run a loop. So, instead of terminating at the farthest TP, run a continuous wire back to the main wire.
Or, run a heavier wire as your main bus and then tier off it to the TP's.

The reasons for this is that after each TP, the voltage/amperage will drop. There is a thread that talked about this awhile back. After putting a continuous wire to make a loop, all his TP's started functioning correctly.
Proceed with caution. Knowledge is Power! Literally! Cool 
Knowledge is Power; Absolute Knowledge is Absolutely Shocking!
Dollar Shave Club. Best Razor I've ever used
Certified 18650 Cell Reclamation Technician
Reply
#20
Korishan, I must have bought them all.....

Can someone please recommend a glue gun, I am going to need one for my packs and for this charging monstrosity.

-Bob
Reply


Who read this thread?
100 User(s) read this thread:
hbpowerwall (08-22-2017, 05:56 AM), AZ_Tekkie (08-17-2017, 01:59 AM), Chickey (09-05-2017, 01:25 PM), pacm31 (05-30-2017, 12:57 PM), daromer (09-05-2017, 02:18 PM), mike (08-11-2017, 12:14 AM), goodnowm (10-24-2017, 12:46 PM), BigBen (06-08-2017, 03:58 AM), TripDealers (07-31-2017, 09:05 AM), NiVa (06-12-2017, 01:15 AM), Lux_Gamer (09-16-2017, 05:03 PM), owitte (09-06-2017, 08:44 AM), opus40 (08-11-2017, 06:48 AM), VdVoort4 (06-01-2017, 02:13 PM), Majorphill (06-28-2017, 09:22 AM), coolfx (06-28-2017, 12:56 PM), nexsuperne101 (06-11-2017, 05:42 AM), Herebus (08-11-2017, 03:10 AM), cstanley (06-01-2017, 02:35 PM), BatteryDIY (09-07-2017, 11:00 PM), ruby2 (09-05-2017, 11:56 AM), JustJim (09-26-2017, 01:37 PM), Korishan (09-06-2017, 04:44 AM), A + A (09-05-2017, 10:02 PM), PAF (09-06-2017, 06:34 PM), Franky Beuselinck (06-12-2017, 07:32 PM), Scepterr (06-28-2017, 02:20 PM), Batteriapan (06-11-2017, 12:30 PM), BobinTN (08-11-2017, 04:58 PM), Frnandu Martiński (07-02-2017, 08:39 AM), egam (06-11-2017, 12:02 AM), CrankyCoder (07-11-2017, 02:48 PM), Alec_J (08-17-2017, 01:52 AM), flight4900 (09-05-2017, 02:52 PM), Mike C (09-06-2017, 11:51 AM), Droid126 (05-29-2017, 08:18 PM), jdeadman (09-05-2017, 03:04 PM), charlie246 (06-13-2017, 09:17 PM), dnik2 (09-05-2017, 05:12 PM), 2146 (06-28-2017, 03:21 PM), wim (09-05-2017, 02:00 PM), wimpie007 (07-04-2017, 05:17 PM), MajStealth (05-29-2017, 10:10 PM), frnandu (09-06-2017, 11:57 AM), typ49 (09-05-2017, 07:29 AM), The-J-Man (08-17-2017, 12:49 PM), John (06-12-2017, 12:46 AM), Robert Baumer (09-07-2017, 12:39 AM), Charles Francis Speakman (06-28-2017, 12:26 PM), Jeremy Choy (06-28-2017, 05:30 PM), Incolor_Devil (06-03-2017, 10:44 PM), 1958 greyhound (08-17-2017, 07:08 AM), Abarth595 (08-13-2017, 04:25 PM), kktuo (09-24-2017, 08:44 AM), neilmc (06-28-2017, 11:42 PM), Off Grid Power wall (06-06-2017, 01:01 PM), Friman (08-09-2017, 02:17 PM), fprumbau (06-25-2017, 10:32 PM), watts-on (09-05-2017, 01:23 PM), Dan Lim (08-17-2017, 03:10 AM), jesusangel (09-05-2017, 06:01 PM), arierep60 (05-30-2017, 02:15 PM), Steven Edelman (08-31-2017, 10:20 PM), Daggerzz (08-11-2017, 05:21 AM), Hanssing (09-05-2017, 07:04 PM), MetalFang (06-09-2017, 09:19 PM), Fredd (06-29-2017, 08:41 AM), autobd (08-11-2017, 02:05 PM), Newidea (06-11-2017, 05:35 PM), SeptimoJunio (06-10-2017, 08:24 AM), ServalSpots (06-11-2017, 02:58 PM), IronSky (08-17-2017, 04:31 AM), Mark Daniel Olsen (06-30-2017, 12:03 PM), Dicklinn (07-01-2017, 01:21 AM), mexx575 (08-15-2017, 09:42 AM), DrkHrs13 (06-28-2017, 12:43 PM), Taz D'vil (07-08-2017, 01:20 AM), clarorayen (06-22-2017, 04:31 AM), kot (06-29-2017, 07:56 PM), mitchvr (06-19-2017, 12:08 PM), ismaildoganw (07-01-2017, 05:54 AM), stefan007 (06-24-2017, 07:10 PM), LinuxSneaker (06-27-2017, 09:47 PM), Stefaan De Ridder (09-05-2017, 01:13 PM), Mustang7302 (06-29-2017, 01:34 AM), zimo (09-01-2017, 10:52 AM), Quebec_PW (08-29-2017, 01:21 AM), King Scrud (06-28-2017, 07:01 AM), Igor Maliszewski (07-18-2017, 06:15 AM), Chiptosser (08-11-2017, 08:22 AM), Chicken (09-05-2017, 05:47 AM), Inverted 18650 (08-11-2017, 01:34 AM), BlueSwordM (08-11-2017, 05:35 PM), SolarWind (09-05-2017, 06:01 PM), Dennis Van Hoek (08-12-2017, 09:22 PM), brafi (08-12-2017, 07:51 AM), Wilker Dias (07-20-2017, 07:23 PM), Stew Mohr (08-01-2017, 01:23 PM), Nitroghost (08-11-2017, 01:31 AM), Terry (08-17-2017, 02:49 AM)

Forum Jump:


Users browsing this thread: 2 Guest(s)