Docan 280 EVE cells - 2023 Quality check (update: Bad experience - scam beware)

[xristostsilis]

Hello!

I recently bought Grade A cells from Docan Poland warehouse 280ah EVE cells.

They seem good, no visible bloat or something plus they all have the same voltage. I just read on this forum that recently the quality of the 280ah eve is not good(unfortunately I saw that after I got them) and I just want to make sure that I don't have a problem here. Is there any test that I should do?

For example the only thing I am planning to do is to plug them into the BMS and then into my hybrid solar inverter and check if capacity is real. Should I do anything else? I have heard that there are some applications to check the barcode but I can't find them.

I am new here so I could use some good advice. Should I upload some photos here?

Please give me some help!

 

[houseofancients]

a capacity test would be my first choice of test to run

 

[xristostsilis]

a capacity test would be my first choice of test to run

thanks, i'll try that

 

[upnorthandpersonal]

I wouldn't worry too much. Make them into a battery and put them to work.

Barcode app: https://play.google.com/store/apps/details?id=com.touliloup.batteryqrdecoder

 

[xristostsilis]

I wouldn't worry too much. Make them into a battery and put them to work.

Barcode app: https://play.google.com/store/apps/details?id=com.touliloup.batteryqrdecoder

thanks for the info!

 

[MrM1]

I wouldn't worry too much. Make them into a battery and put them to work.

Barcode app: https://play.google.com/store/apps/details?id=com.touliloup.batteryqrdecoder

That's what I'm planning to do. I'm not patient enough to test all 16 cells individually. If my new 304s pull 294-306 I'm happy. But I will top balance them to the nth degree though.

 

[upnorthandpersonal]

But I will top balance them to the nth degree though.

I've walked away from doing that as well: I use a BMS with active balancing and they will get top balanced within a few weeks automatically.

 

[xristostsilis]

 

[xristostsilis]

 

[MrM1]

I've walked away from doing that as well: I use a BMS with active balancing and they will get top balanced within a few weeks automatically.

I would too ... But my BMSs are of the Overkill Solar variety so the balancing is pretty micro in those. If I was using Heltec with the 2 Amp I'd do that too

 

[MrM1]

View attachment 145613

Your QRs are scribbled out?

 

[xristostsilis]

Just 2 photos of 2 random-picked batteries from the pack. I will scan them with the app soon!

 

[xristostsilis]

Your QRs are scribbled out?

No I did that through my phone, is it ok to upload with the barcode being shown here? Didn’t know what to do sorry

 

[upnorthandpersonal]

is it ok to upload with the barcode being shown here?

Yes of course!

 

[xristostsilis]

I just got this while scanning. Why?

 

[upnorthandpersonal]

Can you post a picture of the QR code?

 

[xristostsilis]

Can you post a picture of the QR code?

 

[xristostsilis]

I tried another cell and still nothing. Also guys do you thing they are re-lasered?

 

[upnorthandpersonal]

This could very well be a fake QR code. The decoder at https://www.gobelpower.com/lifepo4_decoder.html also says the code length is wrong.
It could be that Docan has decided to remove the 'B' mark from the cell coming form EVE and replace the entire QR code - which I told them at some point not to do because it will cost them customers. Is this a sticker over the original one? Or erased and redone? Are the other QR codes the same number or is there a variation?
Alternatively, it could be that EVE changed code style and this is not recognized by the scanner yet, but I somehow doubt that..

 

[xristostsilis]

This could very well be a fake QR code. The decoder at https://www.gobelpower.com/lifepo4_decoder.html also says the code length is wrong.
It could be that Docan has decided to remove the 'B' mark from the cell coming form EVE and replace the entire QR code - which I told them at some point not to do because it will cost them customers. Is this a sticker over the original one? Or erased and redone? Are the other QR codes the same number or is there a variation?
Alternatively, it could be that EVE changed code style and this is not recognized by the scanner yet, but I somehow doubt that..

Here’s another QR. No, there’s not much variation between the 2 random picked cells. I don’t know whether it is a sticker or not. I”ll have to pull the whole black tape and I don’t wanna do that as I may have to speak with docan about it.

 

[xristostsilis]

When I bought them, they told me they are Grade A cells. What should I do?

 

[houseofancients]

This could very well be a fake QR code. The decoder at https://www.gobelpower.com/lifepo4_decoder.html also says the code length is wrong.
It could be that Docan has decided to remove the 'B' mark from the cell coming form EVE and replace the entire QR code - which I told them at some point not to do because it will cost them customers. Is this a sticker over the original one? Or erased and redone? Are the other QR codes the same number or is there a variation?
Alternatively, it could be that EVE changed code style and this is not recognized by the scanner yet, but I somehow doubt that..

i agree , these seem to be fake QR codes...
you can verify this, but you would have to take off the black sheet, if re lasered there will be a distict difference between new lasered metal and original

 

[houseofancients]

When I bought them, they told me they are Grade A cells. What should I do?

test them, use them

 

[xristostsilis]

Unfortunately I am waiting for my JK BMS to arrive. It will take max 7 days for it to get here. I will inform you guys

 

[xristostsilis]

Spoke with docan and they told me to check them via this website:

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