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ZHIYU ZB206+ Tester
#31
(08-09-2019, 11:31 AM)Wolf Wrote: Don't doubt me on this

Never did))

(08-09-2019, 11:31 AM)Wolf Wrote: So given that the YR1035+ gives us a certain IR result and the ZB206+ gives us a certain result

AFAIK, YR1035+ measures the AC impedance and ZB206+ does the DC resistance (correct me if i'm mistaken). The numbers should be pretty close though.
LiFePO4: QB26650 2500mAh 50A vs A123 ANR26650M1B: https://youtu.be/GOSkte11lRc

Yinlong LTO Lithium Titanate safety tests: https://youtu.be/eAUYbSDEy6I
Toshiba SCiB LTO Lithium Titanate safety tests: https://youtu.be/XsrRDZxEFQE

XTAR DRAGON 4-slot battery tester review: https://youtu.be/S6yVMsIuauE
Miboxer C4-12 4 slot x 3.0A charger review: https://youtu.be/X-ww1YALjvU
Miboxer C2-4000 smart battery tester review: https://youtu.be/jrbJceNXv1g

Samsung 33J for TESLA: https://youtu.be/7FMxgMmPeh4
Samsung 40T - a high drain 35A 21700 cellhttps://youtu.be/lxgKWiQ9580
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#32
(08-09-2019, 11:53 AM)thunderheart Wrote: AFAIK, YR1035+ measures the AC impedance and ZB206+ does the DC resistance (correct me if i'm mistaken). The numbers should be pretty close though.

Yes the YR1035+ does 1kHz Ac impedance and I believe the ZB206+ does pulsed DC.
Man I'm gonna have to pull my Oscope out.
Ah what else do I have to do besides build a powerwall. Smile

Anyway we will see the results tonight.
Wolf
Oz18650 likes this post
If 18 X 650 = 2200+mAh then we have power! 
May all your Cells have an IR of 75mΩ or less Smile
Last count as of 8/7/2019
Total Number of Cells Recorded and processed                 6106
Total Cells required for PowIRwall                                   2856
Total Cells ≥2200mAh, ≥80%, ≥35mΩ, ≤75mΩ, ≥4.12V   2694
For Info Google Drive
Not your average Wolf       
            Cool
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#33
Alright.
I let the batteries sit for 3 days just to see what the voltages would do for thunderhearts benefit.
Now remember these cells where charged with the LiitoKala Engineer Lii-500 and we already know that the LiitoKala slightly overcharges.
So here are the results of the 12 cells.


I also did a scope check when the ZB206+ is in IR mode. There definitely is some tick in the AC  voltage on a regular basis.
I just pulled my cheap DSO138 out. May investigate further when I have time.
 

And just to be sure all voltages are accurate I spotchecked 1 battery on the fluke.


That's all I have for now.

Wolf
thunderheart likes this post
If 18 X 650 = 2200+mAh then we have power! 
May all your Cells have an IR of 75mΩ or less Smile
Last count as of 8/7/2019
Total Number of Cells Recorded and processed                 6106
Total Cells required for PowIRwall                                   2856
Total Cells ≥2200mAh, ≥80%, ≥35mΩ, ≤75mΩ, ≥4.12V   2694
For Info Google Drive
Not your average Wolf       
            Cool
Reply
#34
(08-12-2019, 11:18 AM)Wolf Wrote: I let the batteries sit for 3 days

So the voltages in the table are those measured after 3 days, right?
LiFePO4: QB26650 2500mAh 50A vs A123 ANR26650M1B: https://youtu.be/GOSkte11lRc

Yinlong LTO Lithium Titanate safety tests: https://youtu.be/eAUYbSDEy6I
Toshiba SCiB LTO Lithium Titanate safety tests: https://youtu.be/XsrRDZxEFQE

XTAR DRAGON 4-slot battery tester review: https://youtu.be/S6yVMsIuauE
Miboxer C4-12 4 slot x 3.0A charger review: https://youtu.be/X-ww1YALjvU
Miboxer C2-4000 smart battery tester review: https://youtu.be/jrbJceNXv1g

Samsung 33J for TESLA: https://youtu.be/7FMxgMmPeh4
Samsung 40T - a high drain 35A 21700 cellhttps://youtu.be/lxgKWiQ9580
Reply
#35
(08-12-2019, 05:55 PM)thunderheart Wrote: So the voltages in the table are those measured after 3 days, right?

That is correct.

I don't have a lot of new batteries but the ones I have are INR18650-25R and I gave them a good charge to exactly 4.2V let them sit for an hour and sure enough they where 4.16 to 4.17 volts. Should have recorded it but...... it proved your point. 
So this higher voltage retention must be a phenomenon that occurs on used batteries and not on new or slightly used ones.
Just a guess here. 
Just for the fun of it I will discharge these 12 cells to 3V get a mAh reading and check the recovery V in a day or so. I will then recharge them to exactly 4.2V and let them sit again for a couple of days and report back.

Meanwhile I am working on a project to see how cells of different IR and different capacities operate in parallel.
Quite an interesting chart so far.
Here are the cells in order. BTW I just picked theses cells at random from my "good" pile and the voltages are what you see and they all where between 2300mAh to 2500mAh tested capacity.


Quite interesting how the cells discharge at different rates and interact with each other. Much more testing in this scenario coming.
The pack of 4 was discharged at 2A so technically 500mA each.
Also more than likely an update to "Does IR Matter" thread or start a new thread to stir the hornet's nest. Big Grin Big Grin


Wolf
thunderheart and Oz18650 like this post
If 18 X 650 = 2200+mAh then we have power! 
May all your Cells have an IR of 75mΩ or less Smile
Last count as of 8/7/2019
Total Number of Cells Recorded and processed                 6106
Total Cells required for PowIRwall                                   2856
Total Cells ≥2200mAh, ≥80%, ≥35mΩ, ≤75mΩ, ≥4.12V   2694
For Info Google Drive
Not your average Wolf       
            Cool
Reply
#36
(08-12-2019, 07:23 PM)Wolf Wrote: Meanwhile I am working on a project to see how cells of different IR and different capacities operate in parallel.

Wow. That was really fast and lots of data too. I'm building ebike packs so I'm very interested how IR affects things. 

Very interesting chart, it seems like things are okay up to 3.5v then as the lower (IR/cap/drain rating) cells runs out of charge first, the higher (IR/cap/drain rating) outputs more current to keep up. Hard to draw conclusions if the cells are not the same make. I think you should make only the IR variable and try to keep the Capacity, State of Health, and Drain rating invariant.

Great data on the ZB though. I just want to avoid buying the YR since it's not available on the local online shops. There are other IR testers available but not very sure how accurate they are. E.g. BT5201, RC3562, [color=rgba(0, 0, 0, 0.8)]SM8124A, EM3610, VBIR-2018. I wonder if you have had experience with these other IR testers.
[/color]
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#37
(08-13-2019, 02:56 AM)barns Wrote:  I think you should make only the IR variable and try to keep the Capacity, State of Health, and Drain rating invariant.

There are other IR testers available but not very sure how accurate they are. E.g. BT5201, RC3562, SM8124A, EM3610, VBIR-2018. I wonder if you have had experience with these other IR testers.
Oh I will do that this is just the start of many tests on how batteries interact with each other in parallel.
During charging and discharging.
I will start a new thread on that though. Soon.

On Your IR tester question
BT5201:
Looks like a proper unit. I do not have one so I cannot rate it.

RC3562:I do not have one so I cannot rate it.
The probes are single contact so I would not consider that one. Although the cell holder is true 4 wire.

SM8124a:
I own and it is OK but really made for larger batteries I will post a comparison between the YR1035+ and it.
EM3610:
 I also own but it has single contacts and also really made for larger batteries. I will also post a comparison on it.
Also both the SM8124a and the EM3610 are clumsy to use. The wires are very stiff and not a good flexible silicone wire.

The BVIR-2018 you see in the middle is absolutely junk. It was miles off on voltage and IR. 

The 2 on the left are YR1030 based units and very good.
 

And of course my 2 favorites
The YR1030+


And the one I use pretty much exclusively.
The YR1035+



Wolf
barns likes this post
If 18 X 650 = 2200+mAh then we have power! 
May all your Cells have an IR of 75mΩ or less Smile
Last count as of 8/7/2019
Total Number of Cells Recorded and processed                 6106
Total Cells required for PowIRwall                                   2856
Total Cells ≥2200mAh, ≥80%, ≥35mΩ, ≤75mΩ, ≥4.12V   2694
For Info Google Drive
Not your average Wolf       
            Cool
Reply
#38
Ohohohoh! That's what I hoping for and you do have an Fton of them!

So the Vapcell YR1030 is legit? That one is available here. I was looking at the vapcell shop at banggood and their cells looked very shady.

Looking forward to the comparative data!
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#39
(08-12-2019, 07:23 PM)Wolf Wrote: I don't have a lot of new batteries but the ones I have are INR18650-25R and I gave them a good charge to exactly 4.2V let them sit for an hour and sure enough they where 4.16 to 4.17 volts. Should have recorded it but...... it proved your point. 
So this higher voltage retention must be a phenomenon that occurs on used batteries and not on new or slightly used ones.

I think our observation based on your tests has brought to light a new phenomenon, as you told. I've never come across that and i'm sure it's interesting not only for me and you. Great job, dude! I'll test a couple of old cells too and add my two cents to this topic.
LiFePO4: QB26650 2500mAh 50A vs A123 ANR26650M1B: https://youtu.be/GOSkte11lRc

Yinlong LTO Lithium Titanate safety tests: https://youtu.be/eAUYbSDEy6I
Toshiba SCiB LTO Lithium Titanate safety tests: https://youtu.be/XsrRDZxEFQE

XTAR DRAGON 4-slot battery tester review: https://youtu.be/S6yVMsIuauE
Miboxer C4-12 4 slot x 3.0A charger review: https://youtu.be/X-ww1YALjvU
Miboxer C2-4000 smart battery tester review: https://youtu.be/jrbJceNXv1g

Samsung 33J for TESLA: https://youtu.be/7FMxgMmPeh4
Samsung 40T - a high drain 35A 21700 cellhttps://youtu.be/lxgKWiQ9580
Reply
#40
(08-13-2019, 02:29 PM)barns Wrote: Ohohohoh! That's what I hoping for and you do have an Fton of them!

So the Vapcell YR1030 is legit? That one is available here. I was looking at the vapcell shop at banggood and their cells looked very shady.

Looking forward to the comparative data!
Look no further here it is.
   

I even did the Vapecell which by the way was my very first IR tester and I still hold it dear to my heart. It was rather nostalgic to hold it and do a test with it again. If it was the only one available I would certainly buy it again.

The results



Usability and comfort the YR1035+ is heads over heels the best. Unfortunately the firmware only comes in chinese right now or at least when I bought it. They may have updated that.
The YR1030+ has an english menu and is just as good as the YR1035+ but not as high of a resolution on voltage. 
The probes on the Vapecell are small and after using them for a long time the plastic starts to slide away.
The SM8124A Probes are large and just barely fit the positive side of the cells but as you can see is pretty close with the IR readings. The leads are very short and as said before stiff.
The EM3610 is also decent but only has single contacts and again is clumsy to use (leads are also short and stiff) but not bad overall.

So there you go.

Wolf
If 18 X 650 = 2200+mAh then we have power! 
May all your Cells have an IR of 75mΩ or less Smile
Last count as of 8/7/2019
Total Number of Cells Recorded and processed                 6106
Total Cells required for PowIRwall                                   2856
Total Cells ≥2200mAh, ≥80%, ≥35mΩ, ≤75mΩ, ≥4.12V   2694
For Info Google Drive
Not your average Wolf       
            Cool
Reply


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