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Standardized PL6 testing for A123 cells and compiling data

38K views 76 replies 16 participants last post by  novatin 
#1 ·
I am using A123 20ah pouch cells and I know several other people here are too and I wanted to throw out an idea. I was thinking if we all used the same test program we could compile our data and compare results here on the forum. The goals would be:

#1 A data base of all of our cells from different suppliers would allow the DIY community to compare the different sources of these cells and get build some confidence before sending $5k-10k to some guy in china that says it's good. While it's no guarantee that any of the other DIY'ers will get the same results from a supplier it can help weed out the bad gray market suppliers.

#2 The only way to get good comparable results is through consistency. Using the same hardware (PL6) and software should give us a pretty good apples to apples comparison. We'd need to agree on one test. I get get capacity variances of 10% on a cell by using a 1a discharge as opposed to a 10a or 40a.... I think this will be largely driven buy who has tested the most cells and what did they use?

#3 I am leaving my PL6 running a infinite cycle test on one cell anytime I am not using it for something else. I hope in time to get some life cycle data. I only have one PL6 testing 1 cell, which is hard to draw conclusions from. If others would do the same we make up our own little testing lab by sharing the data (see #2)

#4 I am an engineer, and I like data. :)

Thoughts?

For any of this to be relevant item #2 is key.
 
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#2 ·
Some data, capacity and IR for 151 cells. I tested another 60ish with a different method but these are all PL6
38A charge to 3.65v terminate C/20
38A discharge to 2.25v

My pair of PL6's are virtually identical, purchased at different times, but testing a pair of cells then letting them sit, swapping chargers and testing again has given ~0.05Ah maximum variation. I did this test a few times with the same results. If I let the cell sit overnight or for a few days I typically got within 0.02Ah.

Cell Capacity PL6 IR
17.43 0.8
17.57 0.6
17.60 0.7
17.66 0.7
17.66 0.7
17.70 0.7
17.72 0.7
17.73 0.7
17.76 0.7
17.76 0.8
17.78 0.7
17.82 0.7
17.83 0.7
17.84 0.7
17.86 0.7
17.89 0.7
17.91 0.6
17.92 0.8
17.92 0.7
17.95 0.8
17.99 0.7
18.00 0.7
18.06 0.65
18.08 0.7
18.11 0.7
18.13 0.7
18.15 0.7
18.25 0.6
18.26 0.7
18.27 0.7
18.28 0.6
18.31 0.6
18.33 0.65
18.33 0.7
18.33 0.7
18.34 0.7
18.34 0.7
18.35 0.7
18.36 0.6
18.37 0.7
18.39 0.7
18.40 0.7
18.40 0.7
18.41 0.7
18.41 0.7
18.44 0.7
18.44 0.7
18.47 0.65
18.49 0.8
18.50 0.7
18.50 0.8
18.51 0.7
18.51 0.7
18.51 0.7
18.52 0.6
18.52 0.7
18.52 0.7
18.54 0.8
18.55 0.7
18.55 0.7
18.55 0.7
18.55 0.7
18.56 0.6
18.56 0.65
18.56 0.7
18.56 0.7
18.57 0.7
18.59 0.7
18.59 0.7
18.59 0.7
18.59 0.7
18.60 0.65
18.61 0.7
18.61 0.7
18.62 0.6
18.62 0.6
18.62 0.65
18.62 0.7
18.62 0.8
18.63 0.7
18.64 0.7
18.65 0.7
18.65 0.7
18.67 0.7
18.69 0.6
18.69 0.6
18.69 0.7
18.69 0.7
18.70 0.6
18.70 0.7
18.71 0.75
18.72 0.7
18.73 0.7
18.73 0.7
18.74 0.7
18.75 0.75
18.77 0.6
18.77 0.7
18.77 0.7
18.78 0.8
18.79 0.65
18.79 0.7
18.80 0.7
18.80 0.7
18.81 0.7
18.81 0.7
18.83 0.8
18.84 0.7
18.84 0.8
18.85 0.7
18.87 0.8
18.88 0.6
18.88 0.65
18.88 0.7
18.90 0.8
18.91 0.7
18.92 0.65
18.92 0.7
18.92 0.7
18.93 0.7
18.93 0.8
18.94 0.7
18.97 0.7
18.98 0.7
19.00 0.6
19.00 0.6
19.01 0.7
19.02 0.7
19.03 0.7
19.05 0.7
19.12 0.7
19.12 0.7
19.14 0.6
19.15 0.7
19.16 0.6
19.16 0.7
19.16 0.7
19.17 0.7
19.18 0.6
19.19 0.6
19.19 0.7
19.20 0.7
19.21 0.7
19.21 0.7
19.25 0.6
19.26 0.6
19.30 0.6
19.31 0.7
19.39 0.7
19.47 0.6
19.52 0.7
 
#3 · (Edited)
I like this idea alot as I plan to start testing these cells withing the next month.

I have been planing to use the PL6 as well for its high power discharge.

I plan to test my cells at at least 1C, but might even go to 2C as these are working range of batteries in an EV.

What are you guys using for charge/ discharge cycles?

I was thinking out of the box, top the cells to 3.65V. Then a discharge cycle to either 2.0 or 2.25V measure capacity and another charge to 3.65 for storage while I build the packs. If the charge/discharge rate is 2C, then a cell should be able to be tested about ever hour. Do you think this is testing the cells too hard? The datasheet for these cells say only 10% capacity loss after 3000 cycles with 2.0v being the LVC if I remember correctly.

I plan to test all of my cells and then group them based on capacity and internal resistance, matching the parallel cells as close as I possibly can.

Im thinking about ordering my PowerLab6 today, anybody know a better price then $197.95 for the kit with the output leads and serial adapter?

-Adam
 
#4 ·
Im thinking about ordering my PowerLab6 today, anybody know a better price then $197.95 for the kit with the output leads and serial adapter?
I bought the PL8 because the 6 was out of stock for the 'non usa' store..

I just got this in the mail from Revo, maybe you can save some money (tough not for first time customers):

Now through March 31, 2012, receive 10% OFF normal retail price for any PowerLab 6 or PowerLab 6 Combo! Any orders you place between now and March 31 qualify. This offer is available only through the REVO USA webstore. To obtain this special limited-time pricing, enter coupon code PR032112 in the coupon code field during checkout, then click "Apply". Code is unlimited in that you may use it as many times as you like during the offer period.


[FONT=Arial, Arial Black]Please note: The Revo store does not recognize promotional codes for first time buyers on the site. If you are a first time buyer who qualifies for the promotional code, please call REVO USA sales at (301) 798-2770 and we will assist you with the order and insure you receive the special 10% savings offer.[/FONT]
 
#6 ·
Also just to clarify, mine were some of the earliest A123's available outside of A123RC.com they are the tabless cells.

I have 152 more cells that will be coming soon, some for me some for others.
I will probably be measuring them all. They are cells with 12.1mm tabs not the full length tabs. I will continue testing with my settings and see how these compare to tabless cells.
 
#7 ·
Sorry I haven't done anything on this recently. I am dealing with motor adapter issues right now, but that is another thread.....

Actually the big issue I ran into is that after the 2nd cell was retested at 2C my PL6 stoped charging. It act likes it working with a setpoint at 38amps but shows 0 amps of current. I have called and emailed their tech support a couple times but haven't gotten a reply. If anyone else has run into this or a solution, please let me know.

I was thinking about ordering another PL6 to test my 250 cells so I might go ahead and do it now.

Kerry
 
#9 ·
This common database of test results sounds very good! We actually tried to do similar database with eCars-Now OS-community before with Thundersky cells but only managed to do few cold-temperature tests (see http://www.sahkoautot.fi/paja:batterytests , you can see our Open Source web-software doing all the logging and gathering a "common database" of test-results). But this database never got very far, only few tests were done - lack of time and too few people doing the actual tests...

But now I have 10 x A123 cells too (for my Porche 944) and have so far tested 4 of them with 1C (20A). I have usually tested with 2 cycles to see if there is any significant rise in capacity. So far difference between first and second cycle has been very small. I could also test with 2C (as I have PL8) after I have completed my 1C & 2 cycles testing.

For my use, I need also data how much temperature affects capacity and how much these cells warm up when discharged. (As it gets rather cold here in Finland during wintertime, -25 C is quite normal. And I have not found actual data about any serious cold temperature "lab" testing available.)

So for that reason my recent test-setup (photos in http://www.flickr.com/photos/yty/sets/72157629380248814/) includes 20 mm styrofoam on both sides of the acrylic cell-clamping device to thermally isolate the cell from ambient air. For now I log temperatures with just 2 cheap multimeters but it's rather tedious job to combine PL8 logs with temperature logs. So for that reason I have thought of writing simple program just to control PL8 and to use Arduino with LM335 temp-sensors and read those as well. My friend has already done that with Labview and is going to control 5 PL8 units for some serious testing with Turnigy Nano-cells.

In what temperature you guys are testing the cells ? I would think that something like 20 C (68 F) could be a "standard" temperature?

My cells so far have all been under 17Ah, actually between 15.5 - 16.9 Ah. I need to test them all to see actual variation.

You can see the cells in http://www.flickr.com/photos/yty/sets/72157629495306153/

Henkka
--
http://randomev.wordpress.com - Random EV blog, Porche 944, CAN devices etc.
 
#11 ·
here's my observations after using a PL6 to test cycle my 48 CALB cells (130ah).

1. it was fairly common for the charger to fault for some reason at the bottom of the cycle. It would fully discharge, then have some kind of communication error and not begin the charge cycle. I'd just have to stop the program, and restart it as a single charge cycle instead of a full cycle to finish the cell. It just meant I needed to be quite watchful of the process, not just set it and forget it.

2. The IR readings are all over the place. even on the same cell, the IR would vary from .5-.9 depending on where it is in the charge cycle. I just decided on a consistent part of the charge curve (about 10 minutes into the charge cycle, still at a low SOC) to make the reading for comparisons sake.

3. I charged all the cells up to 3.60v, c/20 current shutoff. I DID NOT put the cells in parallel at any time. I then re-installed in my car, wired them up in series, and drove it. On the next charge cycle, my charger brought them up to an average of 3.50vpc and the voltages on the individual cells ranged from 3.40 to 3.53 volts. This is a much larger variance than I was expecting, I thought they would be much closer top balanced after individually charging them to 3.60v on the PL6. After seeing this variance, I did a little top balancing with a power supply to bring them all a bit closer.
 
#13 ·
My 8 sample cells just arrived. They all have a voltage of 3.29V - 3.293V.
I just wanted to start charging them. How can I create a custom (user) preset?
Maybe I overread something in the manual, but i didn't find anything about it.
If I delete a preset and want to edit it, the charger says it can't edit an empty preset or so.

I don't have the PC USB connector yet, because I didn't find it in germany anywhere...
 
#26 ·
@Kerrymann
The Excel sheet looks nice. Good work.

Some more details about my cells:
Tab: full
Condition: new
Importer: the same as yours

Yesterday I ordered another 400 cells. Paid by T/T, which saved me 650US$:eek:
Thanks! 400 cells? What are you going to do with all of them? What is T/T?
 
#27 ·
Updated with more data and a tab at the end for testing that was not done using rwaudio's preset (thnanks BTW). It is interesting seeing the capacity difference at difference discharge rates. (if you want a cell to look good test it at 2 amps). The excel sheet should be ready for anyone to add data. There are instructions on the first sheet, if you have questions, bugs, enhancements, just ask. (I should probably add a revision history)

My hope is that as people get data they will down load the latest file, add their numbers and repost it. If you want a buzzword, we'll call it "crowd testing" :)

I am only getting through 5 cells a night so I think I will be buying another PL6 tomorrow....

Thanks in advance to all,
 

Attachments

#29 · (Edited)
My cells arrived. I measured the voltage of all 410 cells.
Most were 3,29V. 4 or 5 were down to 3,22V.
Until now, all made in USA.
So if anyone should buy from victpower, you should pay by T/T. Especially if you don't have a Paypal Account in US$. This saved me more than 500Euro ~650US$ and just took 2 days more.

On some cells there are marks on the tabs (all on the anode):

C
Romulus Anode
4K

or a green 6 written on some cells.

did anyone figure out, what these marks mean?
Somewhere I read about that Romulus anode in the forum...

I got 2 cells for free, or i miscounted...
 
#30 ·
Just wondering if anyone had a problem getting regen discharge to work on the pl6? Just started using mine and it starts in regen till about 50ma then drops into normal discharge and maxes out about 7amps. I have balance wires setup etc but don't as yet have the pc interface.
 
#33 · (Edited)
I just connected my 2nd PL6. I use the preset from rwaudio. After charge is completed, it starts discharging at 38A. After 2Ah or so of discharge, i get an error.
"SVS System Reset".
It is on primary. Did anyone have that error, too? It is on primary. The other charger says Safety code 82

What could be the problem?

A few seconds before the error is shown, the fan of the charger gets a little bit irregular.

edit: I get the same error, if I just use the charger alone, without the other.
 
#35 ·
I just connected my 2nd PL6. I use the preset from rwaudio. After charge is completed, it starts discharging at 38A. After 2Ah or so of discharge, i get an error.
SVS System Reset. It is on primary. Did anyone have that error, too? It is on primary.

What could be the problem?

A few seconds before the error is shown, the fan of the charger gets a little bit irregular.
I had to give up on linking the PL6s. My problems were that I would get an error during the cool down phase and I noticed that if the primary reached it's setpoint then it would terminate both PL6s resulting in a lower capacity reading on the cell(s) on the slave PL6s. I had been contacting the CS about this but they have gone silent and I just gave up and are doing them manually which is annoying but not that big of a deal.
 
#41 ·
Hmmm... I had to send back one of my 2 PL6s as well but for a different reason. Based on our small set of users it doesn't seem like their QC is top notch...

Hello all,
I have recently purchased an A123 7s3p module and a 28s3p module and some bare cells and want to go about testing them. Is there a method that lends itself to testing larger numbers of cells than using the PL-6? Any reason more people aren't using the PL-8? If the modules are usable I will order more and build a pack from that, if not I will be stripping out the good cells and hopefully contributing usable information to this thread.
The PL6 has the enough power for testing these cells at the 2C rate. The PL8 has the same features, it just has more power that you don't need when testing single cells. There is the possibility of doing multiple cells in series with the balance wires but I don't know anyone who has gotten useful repeatable test data this way. Best of luck.
 
#39 ·
Hello all,
I have recently purchased an A123 7s3p module and a 28s3p module and some bare cells and want to go about testing them. Is there a method that lends itself to testing larger numbers of cells than using the PL-6? Any reason more people aren't using the PL-8? If the modules are usable I will order more and build a pack from that, if not I will be stripping out the good cells and hopefully contributing usable information to this thread.
 
#47 ·
Updated with almost all of my cells. My data very closely matches rwaudios. I came to some interesting conclusions and observations from the testing that I have documented in a procedure/report that I will try to post here tomorrow.
 

Attachments

#49 · (Edited)
Thanks for sharing those differences Kerrymann that was indeed interesting. I am quite interested in these A123 cells for their power capability in such as small and now affordable package. This may finally be the pack that can replace the old Hawkers in my Zilla 2K powered dual motor Fiero.

I am working on a higher wattage discharge testing setup with the CBA and I will have to share the results of some more extreme testing if I can get some higher C rate drains. In the meantime, it looks like a PL6 or PL8 will be the tool for baseline comparisons of the cells and I agree with the 38A rate.
 
#50 ·
Your very welcome. One thought I had on higher discharge rates is hooking up multiple PL6s to one cell. I think you could get away without any software changes but it would be really cool if someone (not me) could hack the CCS so you can have multiple PLs act together as one when they are paralleled. I am going overseas for a few weeks for work so I won't be able to play with the idea but maybe someone else out there can give it a shot.
 
#52 · (Edited)
In my testing of my cells I ran across one cell that graphed strangely. The powerlab graph shows a fairly normal discharge curve, as it dives toward the bottom it spikes up and then decends again. Has anyone else run accross something like this. Here's the graph:



I've repeated the discharge with the same results 3 times on this one cell.
 
#57 ·
Hi,

I don't know how many of you are going to this extend but this is my plan and how I'm doing it.
The purpose is to arrive at as even a capacity pack as possible, that would mean matching the stronges cell in parallel with the weakest eventually meeting in the middle. I'm measuring the capacity of all my cells and writing it down on the cell and recording what plastic carrier it is stored in carrier 1,5,9, etc 4 numbers/carrier. I'm writing this data in column A in a spreadsheet. Then I copy column A's data to another column C. Then I sort column C's data rising numerically and can easily find and match weakest and strongest in pairs to achieve global harmony.
 
#58 ·
I've done basically the same thing in an excel spreadsheet. I don't just match the lowest with the highest, I set a target total value and move cells around to get them within +/-0.01Ah this leaves the "error" with the consistency of the PL6 in testing. I group the cells into A,B,C.... groups so that I get the correct cells in the 3P set up. I then have 4 groups that make up a module, I am assembling these into 4S3P modules that are still light and easy to work with. At the far right I have my module type which tells me what type of terminals that I need to use for proper assembly of the pack. C,D are my large terminals that will accept a 2/0 lug, A,B are simply threaded/non threaded versions of the same connection block. (module 24 will be the type C version for the other 2/0 lug)
My complete pack will be obviously 24 modules in the end.


Group Module Cells Total Variance Module type
A 1 17.860 18.880 19.260 56.00 0.00 D
B 1 17.890 18.590 19.520 56.00 0.00 D
C 1 17.920 18.610 19.470 56.00 0.00 D
D 1 17.990 18.620 19.390 56.00 0.00 D
E 15 18.080 18.620 19.300 56.00 0.00 A
F 15 18.150 18.650 19.200 56.00 0.00 A
G 15 18.060 19.250 18.700 56.01 0.01 A
H 15 18.280 18.690 19.030 56.00 0.00 A
I 2 18.310 18.690 19.000 56.00 0.00 B
J 2 18.330 18.690 18.980 56.00 0.00 B
K 2 18.330 18.700 18.970 56.00 0.00 B
L 2 18.410 18.780 18.810 56.00 0.00 B
M 3 18.440 18.790 18.770 56.00 0.00 A
N 3 18.440 18.790 18.770 56.00 0.00 A
O 3 18.470 18.800 18.730 56.00 0.00 A
P 3 18.490 18.800 18.710 56.00 0.00 A
Q 4 18.500 18.810 18.690 56.00 0.00 B
R 4 18.400 18.770 18.830 56.00 0.00 B
S 4 18.560 18.920 18.520 56.00 0.00 B
T 4 18.560 18.920 18.520 56.00 0.00 B
U 5 18.560 18.930 18.510 56.00 0.00 B
V 5 18.560 18.930 18.510 56.00 0.00 B
W 5 18.560 18.940 18.500 56.00 0.00 B
X 5 18.510 18.840 18.650 56.00 0.00 B
Y 6 18.550 18.900 18.550 56.00 0.00 A
Z 6 18.550 18.910 18.540 56.00 0.00 A
AA 6 18.270 19.180 18.550 56.00 0.00 A
BB 6 18.400 19.190 18.410 56.00 0.00 A
CC 7 18.390 19.020 18.590 56.00 0.00 B
DD 7 18.260 19.010 18.730 56.00 0.00 B
EE 7 18.360 19.310 18.330 56.00 0.00 B
FF 7 18.250 18.600 19.150 56.00 0.00 B
GG 8 18.000 18.840 19.160 56.00 0.00 B
HH 8 19.190 19.210 17.600 56.00 0.00 B
II 8 18.130 18.870 19.000 56.00 0.00 B
JJ 8 18.670 18.610 18.720 56.00 0.00 B
KK 9 19.050 18.370 18.570 55.99 -0.01 A
LL 9 17.910 18.880 19.210 56.00 0.00 A
MM 9 19.120 18.920 17.950 55.99 -0.01 A
NN 9 18.750 18.620 18.620 55.99 -0.01 A
OO 10 19.170 17.660 19.160 55.99 -0.01 B
PP 10 19.120 17.720 19.160 56.00 0.00 B
QQ 10 18.620 18.640 18.740 56.00 0.00 B
RR 10 18.590 18.520 18.880 55.99 -0.01 B
SS 11 19.140 17.700 19.160 56.00 0.00 B

Sorry for the formatting but it should give you the idea.
 
#60 ·
The procedure is attached.

Sorry for the long delay. I finished this over a month ago. I wanted to put a lot more information and lessons learned from testing into this but am too busy with the build. That and I had to strip some stuff out to make the .pdf small enough to attach it here. Anyway I hope people find it useful. And it would be great to start seeing other people's data.

Enjoy,
 

Attachments

#65 ·
How can I add data without erasing the gray line?
Here are all tested cells:
1 1 0,9
2 1 0,8
3 1 0,8
4 1 0,8
5 1 0,8
6 1 0,8
7 1 0,8
8 1 0,7
9 18200 0,8
10 18095 0,9
11 18593 0,8
12 18739 0,8
13 17666 0,8
14 17823 0,8
15 18317 0,8
16 18347 0,8
17 17781 0,8
18 17848 0,8
19 18020 0,8
20 18214 0,8
21 17754 0,7
22 17982 0,7
23 17919 0,8
24 18600 0,7
25 18807 0,8
26 18754 0,8
27 18621 0,6
28 18608 0,7
29 18290 0,7
30 18601 0,7
31 18512 0,6
32 17811 0,8
33 18849
34 18709 0,7
35 18653 0,7
36 18637 0,6
37 17740 0,7
38 17701 0,8
39 18260 0,7
40 18206 0,7
41 17802 0,7
42 18267 0,7
43 17943 0,7
44 18791 0,7
45 18437 0,7
46 18585 0,8
47 18378 0,8
48 18425 0,8
49 18486 0,8
50 17967 1,3
51 18391 0,7
52 18524 0,6
53 18324
54 17678 1,1
55 18119
56 18838 0,9
57 18003 0,8
58 18022 0,7
59 17999 0,8
60 17430 0,8
61 17870 0,7
62 17865 0,7
63 17647 0,7
64 17874 0,7
65 18511 0,7
66 18373 0,7
67 18533 0,6
68 18926 0,7
69 18893 0,6
70 18969 0,7
71 18827 0,7
72 18655 0,7
73 18532
74 18751
75 18723 0,7
76 18651 0,8
77 18656 0,8
78 18824
79 18439
80 18332 0,7
81 18332 0,7
82 18133
83 18136 0,7
84 18438 0,7
85 18683
86 18574
87 18472 0,7
88 18385 0,9
89 18159 0,8
90 18234 0,8
91 18006 0,8
92 18423 0,8
93 17913 0,8
94 18401 0,8
95 18021 0,8
96 17845 0,8
97 18421 0,8
98 18390 0,8
99 18202 0,8
100 18238 0,8
101 18450 0,8
102 18184 0,8
103 18428 0,8
104 18550 0,8
105 18603 0,8
106 18710 0,8
107 17963 0,8
108 18291 0,7
109 18347 0,9
110 18260 0,8
111 18417 0,8
112 18377 0,8
113 18431 0,7
114 18917 0,6
115 18652 0,7
116 18787 0,7
117 18472 0,8
118 18525 0,8
119 18634 0,9
120 18787 0,8
121 18594 0,7
122 18872 0,7
123 18244 0,8
124 18641 0,7
125 18648 0,7
126 18606 0,8
127 18226 0,8
128 18130 0,7
129 18530 1,1
130 18232 0,9
131 18450 0,9
132 18947 0,8
133 18730 0,8
134 18859 0,8
135 18296 0,8
136 18323 0,8
137 18600 0,7
138 18266 0,7
139 18447 0,8
140 18561 0,8
141 18309 0,8
142 18184 0,8
143 18606 0,8
144 18242 0,7
145 18500 0,8
146 18732 0,8
147 18616 0,8
148 18599 0,7
149 18517 0,8
150 18461 0,8
151 18262 0,9
152 18252 0,9
153 17636 0,8
154 18032 0,7
155 17799 0,8
156 17788 0,8
157 18603 0,8
158 18314 0,8
159 18210 0,8
160 18660 0,7
161 18433 0,8
162 18410 0,8
163 18322 1
164 18398 0,7
165 18577 0,9
166 18449 0,9
167 18409 0,8
168 18199 0,7
169 18396 0,8
170 18283 0,8
171 18058 0,8
172 17931 0,8
173 17970 0,8
174 18046 0,8
175 18353 0,8
176 17623 0,8
177 18097 0,7
178 18024 0,8
179 17997 0,7
180 18227 0,7
181 18022 0,8
182 18035 0,8
183 18350 0,8
184 18006 0,8
185 18313 0,8
186 18254 0,8
187 18016 0,8
188 18112 0,7
189 18395 0,8
190 17953 0,7
191 18349 0,8
192 18534 0,8
193 18103 0,8
194 18160 0,8
195 18492 0,8
196 18140 0,7
197 18528 0,7
198 18329 0,9
199 18535 0,8
200 18402 0,8
201 18636 0,7
202 18501 0,8
203 18153 0,8
204 17754 0,8
205 18387 0,9
206 18022 1,2
207 18659 0,8
208 18498 0,8
209 18443 0,8
210 18594 0,8
211 18826 0,7
212 18804 0,8
213 18630 0,8
214 18559 0,8
215 18247 0,8
216 18203 0,7
217 18078 0,8
218 18210
219 18311 0,7
220 18329 0,8
221 18180 0,8
222 18139
223 18081
224 18480 0,8
225 18129 0,8
226 18698 0,8
227 18433 0,9
228 18513 0,9
229 18652 0,8
230 18544 0,7
231 18446
232 18427 0,7
233 18161 0,8
234 18239 0,8
235 18190 0,8
236 18339 0,8
237 18553 0,8
238 18373 0,8
239 18055 0,8
240 18475 0,8
241 18403 0,8
242 18891 0,8
243 18386 0,8
244 18084 0,8
245 18172 0,8
246 17907 0,9
247 18339 1
248 17828 1
249 18819 0,7
250 18737 0,7
251 18510 0,8
252 18739 0,7
253 18145 0,9
254 17899 0,8
255 18039 0,9
256 18011 0,9
257 17953 0,8
258 18299 0,8
259 17989 0,7
260 18185 0,8
261 18225 0,8
262 18144 0,8
263 18402 0,7
264 18320 0,7
265 18320 0,7
266 18671 0,6
267 18532 0,7
268 18893 0,7
269 18923 0,7
270 18953 0,7
271 18762 0,7
272 18770 0,7
273 18666 0,7
274 18757 0,7
275 18575 0,7
276 18681 0,7
277 18804 0,7
278 18776 0,8
279 17976 0,8
280 17927 0,7
281 18565 0,7
282 18686 0,7
283 18813 0,6
284 18725 0,6
285 18774 0,6
286 18893
287 18732
288 18647 0,7
289 18193 0,7
290 18330 0,7
291 18438 0,7
292 18167
293 18432
294 18334 0,7
295 1 4K
296 1 4K
297 18385 0,8
298 18001 0,8
299 17999 0,7
300 17696 0,7
301 18290 0,9
302 18789 1,2
303 18399 0,8
304 18183 0,8
305 18314 0,7
306 18065 0,7
307 18241 0,7
308 18277 0,7
309 18321 0,7
310 17883 0,8
311 18151 0,8
312 18196 0,8
313 18302 0,8
314 18425 0,8
315 18515 0,8
316 18698 0,7
317 18593 0,8
318 18829 0,7
319 18348 0,7
320 18428 0,8
321 18775 0,8
322 18902 0,8
323 18224 0,8
324 18544 0,7
325 18342 0,7
326 18308 0,8
327 18427 0,8
328 18420 0,8
329 18451
330 18724
331 18697
332 18471
333 18361
334 18406
335 18111
336 18108
337 18192
338 18113
339 18695
340 18064
341 18054
342 18595
343 18126
344 18003
345 1
346 18353 0,8
347 17770 0,7
348 18077 0,8
349 18047 0,7
350 17718 0,8
351 17831 0,8
352 17930 0,8
353 17746 0,8
354 18089 0,8
355 17975 0,8
356 18324 0,8
357 18130 0,8
358 1
359 18453 0,9
360 18521 0,9
361 18369
362 18811 0,6
363 18393 0,8
364 18480
365 18331 0,8
366 18499 0,8
367 18247 0,8
368 17914 0,8
369 18035 0,8
370 18227 0,8
371 18350 0,8
372 18320 0,7
373 18045 0,8
374 18275 0,8
375 17801 0,8
376 17806 0,8
377 17904 0,8
378 17900 0,8
379 18516 0,8
380 18482 0,8
381 18612 0,7
382 18848 0,7
383 18678 0,7
384 18665 0,7
385 18951 0,8
386 19055 0,8
387 18064 0,8
388 18014 0,8
389 18867 0,8
390 18774 0,8
391 18652 0,8
392 18528 0,7
393 18352 0,8
394 18347 0,8
395 17900 0,8
396 18182 0,8
397 17934 0,8
398 17803 0,8
399 18266 0,8
400 17865 0,8
401 18303 0,8
402 18234 0,8
403 17768 0,8
404 18278 0,7
405 18355 0,8
406 18514 0,8
407 17786 0,8
408 17638 0,7
409 17919 0,8
410 17940 0,8
I set he capacity of some cells to 1. These are test cells or cells in bad condition, I didn't want to have in my pack.

I matched the cells using a python script. Total 3P capacity varies from 55434 to 55429mAh.
 
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