Batch of cells EVE MB31 with serial number different from QR code

[CarecaIII]

Hi, has anyone ever had a cell with a serial number engraved that is different from the QR code?

For example, the serial number in the last digits is 3111 and scanning the QR code shows 3112? I'm talking about EVE MB31.
Is it more likely that these are fake cell cells engraved incorrectly or a possible error by the manufacturer?
There are 12 cells from the batch of June 5, 2024. I have no others.

Thank you.

 

[42OhmsPA]

Seems kind of strange to me.

Are you opposed to peeling the black plastic back, cleaning the glue off the cell with iso, and looking for signs of sanding/relasering around the QR code?

What vendor did they come from?

 

[CarecaIII]

Seems kind of strange to me.

Are you opposed to peeling the black plastic back, cleaning the glue off the cell with iso, and looking for signs of sanding/relasering around the QR code?

What vendor did they come from?

I am shortly waiting for the response from the supplier who is investigating, then I will decide what to do, including doing the test you suggested and disclosing the name of the supplier: for now I will save his good intentions.
It seems that no one has had the same situation.
If they were fake cells, why make such an obvious mistake?
Besides, if Eve had made it, couldn't they have corrected it?
Thank you.

 

[42OhmsPA]

I am shortly waiting for the response from the supplier who is investigating, then I will decide what to do, including doing the test you suggested and disclosing the name of the supplier: for now I will save his good intentions.
It seems that no one has had the same situation.

It's the first time I've seen it and I pay attention to lots of cell threads, keeping an eye on what suppliers are good.

If they were fake cells, why make such an obvious mistake?

Not fake, just re-lasered because they didn't pass test xx.x at the factory.
I don't think re-sellers expect many buyers to decode the codes.

Besides, if Eve had made it, couldn't they have corrected it?

Probably but it might be cheaper to bin it as grade B and offload to a relseller..

Thank you.

You're welcome.

 

[Ussama Ali Syed]

did you get the explanation from the supplier... ?

 

[CarecaIII]

No good explanation. I finally got my refund.

 

[it-enginer]

No good explanation. I finally got my refund.

Did you send the cells back, or did you get a partial refund and keep them?

I just received some cells from a seller on Alibaba that I’ve been trading with for a while. I’ve never been scammed before, but I guess there’s a first time for everything.

I ordered EVE MB31 cells, but it looks like I received LF280K V3 instead. Externally, they look the same, but the LF280K is 0.1 kg lighter and obviously has a lower capacity. The cells weigh 5.5 kg and tested around 300Ah on my capacity tester (at the beginning, they tried to convince me to test until 2.0 volts instead of 2.5 volts :D), which matches the LF280K. Also, the QR codes look fake...

 

[42OhmsPA]

Did you send the cells back, or did you get a partial refund and keep them?

I just received some cells from a seller on Alibaba that I’ve been trading with for a while. I’ve never been scammed before, but I guess there’s a first time for everything.

I ordered EVE MB31 cells, but it looks like I received LF280K V3 instead. Externally, they look the same, but the LF280K is 0.1 kg lighter and obviously has a lower capacity. The cells weigh 5.5 kg and tested around 300Ah on my capacity tester (at the beginning, they tried to convince me to test until 2.0 volts instead of 2.5 volts :D), which matches the LF280K. Also, the QR codes look fake...

Peel back the black plastic, clean the residue off with some isopropynol and post photos of the QR codes.

Who was the seller?

 

[it-enginer]

Peel back the black plastic, clean the residue off with some isopropynol and post photos of the QR codes.

Who was the seller?

I see that they are faked without doing this cos on one of them there is visible remaining of old number
Btw I just finished testing 10 out of 64 that I ordered and their would be perfectly fine I would buy them as Lf280k...
I don't want to reveal seller name until we figure out what happened - hope this will be tomorrow

 

[Brucey]

From what I've seen, you can pay for ev grade cells with original qr codes that make sense on a decoder, or ess/solar grade which are new but relasered so they dont make sense with decoder. And some lines don't have the option of ev grade, it's all ess/solar.

At least that's the case with docan.

 

[it-enginer]

Here is how it looks on one of the cell (top left corner). Hard to catch on camera but quite visible in person in right lighting. Gobel decoder say that numbers seems legit. But it was suspicious for me because according to those numbers they all are made on the same day - I have ordered many cells in my life and never got all from the same date in one batch...

 

[CarecaIII]

Did you send the cells back, or did you get a partial refund and keep them?

I just received some cells from a seller on Alibaba that I’ve been trading with for a while. I’ve never been scammed before, but I guess there’s a first time for everything.

I ordered EVE MB31 cells, but it looks like I received LF280K V3 instead. Externally, they look the same, but the LF280K is 0.1 kg lighter and obviously has a lower capacity. The cells weigh 5.5 kg and tested around 300Ah on my capacity tester (at the beginning, they tried to convince me to test until 2.0 volts instead of 2.5 volts :D), which matches the LF280K. Also, the QR codes look fake...

Full refund and return shipping costs at their expense.
I lost the alibaba commissions. By the way: is there a possibility to get the commissions refunded by Alibaba? Thank you.

 

[it-enginer]

Full refund and return shipping costs at their expense.
I lost the alibaba commissions. By the way: is there a possibility to get the commissions refunded by Alibaba? Thank you.

I think there is no way to get it refunded. At least that is what I saw one day in Alibaba refund policy.

 

[it-enginer]

I promised that I give update on my thread. So here is my "mb31" cell that turned to be LF280k v3. Capacity (~290-300Ah) + weight (5.5kg Vs 5.6 for real mb31) confirms that. Seller was dishonest to the last moment. They tried to convince me that they should be discharged to 2.0V, so I doing capacity testing wrong, environment is influencing my results etc...
And I tested all 64 of them and they turned out to be ok, they are just different cell that they advertised...
Anyway I decided to keep them and I got refund for price difference between mb31 and LF280k. Those Chinese sellers... Can't really trust them :|

 

[Alarchist]

Those Chinese sellers... Can't really trust them :|

Well you can with some who are recommended here, but who did you buy from? So others don't get stung too.
Glad you got it sorted in the end, but just a refund of the difference is the absolute minimum they should have done.

 

[JerryK]

Well maybe you discovered one of the suppliers to Domfume for their 300ah batteries /cells

 

[it-enginer]

Well you can with some who are recommended here, but who did you buy from? So others don't get stung too.
Glad you got it sorted in the end, but just a refund of the difference is the absolute minimum they should have done.

Actually, this one has received some good opinions on this forum, and I have ordered from them multiple times. But I don't want to disclose the seller's name. They said their supplier gave them these cells in that condition and they didn't know that and that they didn't fabricate them themselves and they are doing investigation in that matter... However, I don't really believe them because of this discharge to 2.0V issue - and it got resolved this way only because I was persuaded enough to tell that their engineer don't know what he is talking about. Anyway, case closed—I got fairly cheap, good quality LF280K V3 cells (I hope at least - measurements are good but you never know...), so I can't really complain, other than the shitty buyer experience

 

[Alarchist]

Actually, this one has received some good opinions on this forum, and I have ordered from them multiple times. But I don't want to disclose the seller's name. They said their supplier gave them these cells in that condition and they didn't know that and that they didn't fabricate them themselves and they are doing investigation in that matter... However, I don't really believe them because of this discharge to 2.0V issue - and it got resolved this way only because I was persuaded enough to tell that their engineer don't know what he is talking about. Anyway, case closed—I got fairly cheap, good quality LF280K V3 cells (I hope at least - measurements are good but you never know...), so I can't really complain, other than the shitty buyer experience

Sorry, you were scammed, by not saying who it was, you're happy for other people to get scammed by the same seller? What happened to you sadly is a classic technique seen many times on this forum. Even well known companies like Docan most people have had good cells and experiences but some others got bad ones, which is why I wouldn't trust them.

 

[it-enginer]

Sorry, you were scammed, by not saying who it was, you're happy for other people to get scammed by the same seller? What happened to you sadly is a classic technique seen many times on this forum. Even well known companies like Docan most people have had good cells and experiences but some others got bad ones, which is why I wouldn't trust them.

No, I'm not ok with that.
Ok... I they don't care abot their reputation sending me scam, so I won't care either, it was Shenzhen Cylaid Technology Co.

 

[Alarchist]

Again sorry to hear that and glad it's settled. Thanks for letting us know who the supplier was, I searched these forums and they've never been mentioned before as far as I could see? It's always good to check first on feedback to suppliers BEFORE purchasing, hopefully now others will appreciate your heads up to be wary of Shenzhen Cylaid Technology Co - They did it to themselves!

 

[kommando]

I have dealt with various Chinese companies over the years as a buyer for engineering parts and machines, even the best supplier will let you down eventually unless you put checks in place before it leaves the factory. The first delivery is always the best.