CATL 280AH 6000 cycles QR code location

[Alkaline]

Holly crap man, 299.... I don't think I have ever hear anyone with a 280 cell rating so high. Hey nhanus09 you are 100% you didn't get some CATL 302?

 

[nhanus09]

Holly crap man, 299.... I don't think I have ever hear anyone with a 280 cell rating so high. Hey nhanus09 you are 100% you didn't get some CATL 302?

These are certainly 280AH cells. That's what I ordered that's what the label says. Testing cell #2 of 48 now.. maybe a fluk but I doubt it. DOCAN showed me similar numbers of about 50 cells they tested and also a picture of a screen shot printed out from another customer.. see those along with the screen shot and xls data from cell #1 below..

Had to zip the xls to upload here..

 

[Alkaline]

Insane, and you paid $130.00 / pcs shipped for these?

 

[nhanus09]

Insane, and you paid $130.00 / pcs shipped for these?

That is correct

 

[brum]

Holly crap man, 299.... I don't think I have ever hear anyone with a 280 cell rating so high. Hey nhanus09 you are 100% you didn't get some CATL 302?

The images are from the CATL datasheet. Look at the CB310 model name - there is a chance that these are some early versions of a 310Ah cell.

The cells are explicitly designed for energy storage systems. This is also in the datasheet.

However, the second image shows:

Restricted use regulations: this sample is still in the development stage and can be used for cycle tested under
standard charge and discharge method. Now the cycle number of tests is less than 500 cycles. The cell are only
used for announcements, tests, etc., and are prohibited from being sold to customers.

So there are still concerns with cell performance in a few years. I haven't asked for details on that part. It may be an early datasheet that we are getting since it has been created in March 2020 (according to the PDF metadata).

 

[Bud Martin]

I think the dimensions of cells OP has bought should be able to tell if they are 280Ah cell or the 310Ah cell.

 

[nhanus09]

The images are from the CATL datasheet. Look at the CB310 model name - there is a chance that these are some early versions of a 310Ah cell.

The cells are explicitly designed for energy storage systems. This is also in the datasheet.

However, the second image shows:


So there are still concerns with cell performance in a few years. I haven't asked for details on that part. It may be an early datasheet that we are getting since it has been created in March 2020 (according to the PDF metadata).

Here is the spec sheet Docan gave me.. if someone has the QR code parse app and can parse the QR code from cell #1 and #2 below I'd appreciate it or tell me how..

Ty

 

[Bud Martin]

According to GobelPower, they look to be reprinted QR code.

LiFePO4 Cells QR Codes Decoder : GobelPower.com

GobelPower.com : LiFePO4 Cells QR Codes Decoder - China Lithium Battery Distributor and manufacturer, Offers LiFePO4 Battery, 18650 Battery, 12V/24V/48V/72V Rechargable Lithium Battery for Home Solar Energy Storage, Electric Bikes, Scooters, Forklifts, Sweepers, Mowers and Boats.

www.gobelpower.com

 

[brum]

Here is the spec sheet Docan gave me.. if someone has the QR code parse app and can parse the QR code from cell #1 and #2 below I'd appreciate it or tell me how..

Ty

I'm failing to scan them. I've been able to do that on previous cells posted in the forum that had their original QR code. But on the CATL 280Ah cells this does not work.

 

[Alkaline]

Hrm if these are 302 that they are selling as 280 that is not good. But the original QR code is covered up as its supposed to be next to the vent.

No way to tell the 302 dimension wise is the same as the 280?

 

[brum]

They are not 302Ah for sure. But they might be 310Ah. And this is not the seller datasheet, but the one from CATL. So whatever CATL is doing we won't find it.

And despite that - 300Ah for 130USD/cell is a pretty good result. Mine are 135USD/cell including shipping. As said - what matters is the usable capacity we are getting for the money. Based on the first results it looks pretty good.

 

[Alkaline]

No such thing as a CATL 310, only 302, the 302 will test up to 315.

As far as usable capacity, there is a big difference between a 280 cell testing to 299 vs a 302 testing to 299. Since the original QR code has been scratched off and covered it is going to be a pain to determine what this cell is.

 

[nhanus09]

Hrm if these are 302 that they are selling as 280 that is not good. But the original QR code is covered up as its supposed to be next to the vent.

No way to tell the 302 dimension wise is the same as the 280?

I'll peel the cover back and see what I find

 

[nhanus09]

No such thing as a CATL 310, only 302, the 302 will test up to 315.

As far as usable capacity, there is a big difference between a 280 cell testing to 299 vs a 302 testing to 299. Since the original QR code has been scratched off and covered it is going to be a pain to determine what this cell is.

If they are in fact 302 sold as 280 and they test as they do why would that be a bad thing.. besides not being truthful.. would the longevity be affected..

 

[nhanus09]

Hrm if these are 302 that they are selling as 280 that is not good. But the original QR code is covered up as its supposed to be next to the vent.

No way to tell the 302 dimension wise is the same as the 280?

I'll try to look at the dims..

Here are the results of cell #2 . The test cut off a few minutes early due to the time limit I put on the test.. probably would have reached 299 but it stopped at 2.792v.

results: 297AH / 989WH
see files below.

 

[740GLE]

And despite that - 300Ah for 130USD/cell is a pretty good result. Mine are 135USD/cell including shipping. As said - what matters is the usable capacity we are getting for the money. Based on the first results it looks pretty good.

That is a good price if you can get 2-5000 cycles from it, if they fall flat capacity wise after 3-500 cycles I’d say that’s not that good of a deal.

 

[nhanus09]

That is a good price if you can get 2-5000 cycles from it, if they fall flat capacity wise after 3-500 cycles I’d say that’s not that good of a deal.

Right.. unfortunately time is not on our side on testing that.. ill confirm what the warranty they offered was. I think it was 5 years

That is a good price if you can get 2-5000 cycles from it, if they fall flat capacity wise after 3-500 cycles I’d say that’s not that good of a deal.

 

[brum]

That is a good price if you can get 2-5000 cycles from it, if they fall flat capacity wise after 3-500 cycles I’d say that’s not that good of a deal.

And we will likely not find out anything about that in the next couple of years .

Does anybody rely on long-term warranty from China? And do you have warranty conditions specified somewhere?

 

[nhanus09]

Does anybody rely on long-term warranty from China? And do you have warranty conditions specified somewhere?

No and no. Yes I get your point.

 

[brum]

This is a general question. Does anybody of us get some realistic warranty for cells ordered from China? I have some serious doubts about that.

 

[740GLE]

No but prior expectations was that cells lasted many many cycles, one of the major selling points over AGM/FLA.

I feel it seems many people have noted prior success of LiFePo4 cells of years ago and apply that to what you can buy today. Where as these resellers may take some liberties of our expectations and reality.

Such as living the Wild West of buying cells these days, luck of the draw. Set your expectations low and be amazed if they are exceeded.

 

[Alkaline]

I'll try to look at the dims..

Here are the results of cell #2 . The test cut off a few minutes early due to the time limit I put on the test.. probably would have reached 299 but it stopped at 2.792v.

results: 297AH / 989WH
see files below.

View attachment 120479

You either have the best 280s of all time, or you have 302 sold as 280. No way to tell?‍? without the original qr code.

 

[740GLE]

You either have the best 280s of all time, or you have 302 sold as 280. No way to tell?‍? without the original qr code.

Physical dimensions and weight of 302 and 280 are not the same correct?

 

[brum]

Yep. Both weight and dimensions are the same.

You either have the best 280s of all time, or you have 302 sold as 280. No way to tell

without the original qr code.

Why? Because of the 80% remaining capacity threshold when we should dispose of the cells?

 

[nhanus09]

No but prior expectations was that cells lasted many many cycles, one of the major selling points over AGM/FLA.

I feel it seems many people have noted prior success of LiFePo4 cells of years ago and apply that to what you can buy today. Where as these resellers may take some liberties of our expectations and reality.

Such as living the Wild West of buying cells these days, luck of the draw. Set your expectations low and be amazed if they are exceeded.

Yes. That is the $64k question..

A. Do we have any evidence that these cells won't last 6k or even 4k cycles aside from obvious bloating/buldging and signs of prior use and under rated capacity tests..

B. Has anyone even had these cells in service long enough (3 to 5) years to give us any data..

In the name of science I'm willing to sacrifice one of these cells to try and find out. I can cycle it in crappy conditions.. 2x per day no compression, logging each cycle and after say 100 cycles we can start to look at the data and possibly extrapolate expected life span of the cell..

Nate