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And my sad story with BMS order finally came to an end thanks to PayPal protection. They backed my refund request and I received my $1.5K back. One day before the PayPal decision Jenny Wu unexpectedly appeared on Whatsapp after three weeks of complete silence. She made a ridiculous offer that I...

Finally I decided to look what's under the black cover of the cells. The outcome was predictable. QR code area looks sanded and I have no doubts the new QR code was printed on top of the old one to hide the "B" mark or to change the product code. It's up to you to decide whether it is a normal...

Hello! Having read here on this forum a lot of positive feedback about Docan Power decided to buy from them on Alibaba. Ordered 84pcs of Eve LF280K cells from Docan in January. Sales rep was Jenny Wu. Cells were sold as "brand new Grade A". I paid almost USD12K for them, USD141 per cell...

And when you see another sweet story about how great Jenny Wu and Docan Power are, don't forget about their very generous affiliate program. You can find it on their website here. "DOCAN POWER affiliate program is free and enables members to earn revenue by placing a link or links on their web...

JK introduced completely new BMS model. You can find it in the Hankzor store here . Active balancing is still there. Support added for main inverter vendors (Growatt, Deye, Victron etc.). It is an interesting product but I am afraid it might have serious bugs in it's first generation.

Why do you think so? MB models are new, so chances they have some production problems are higher compared to mature models, it can lead to a big quantity of B-grade MB cells on the market, sold through Docan, QSO, Basen etc etc. I saw LF280K V3 cells with LF304 code relasered over the old code...

Last month battery sellers from Alibaba were hyperactive desperately trying to sell. Prices are going down already and will continue doing so in the nearest future. Lithium price lost almost 70% since the beginning of the year. We should have more reasonable prices across the board soon. Fraud...

Only Whatsapp and Alibaba app.

After reading this story I realised that I paid $12K to Docan for relasered cells. Too bad this information was not available in January when I placed my order. I could save about $1500 if I just ordered same B cells from Nkon.nl What a waste...

On my pictures here there is a clearly visible oval shaped spot with a parallel scratches, like that area was scraped with abrasive. Rest of the cell surface is even and smooth. I didn't remove the glue, just ripped off the black cover. On Ray's video you can also see that under the glue area...

Some JK owners reported latest Android app stopped working. They had to revert to the previous version through apk installer and it solved the problem.

I am one of the guinea pigs))) Already purchased these new BMS. This problem wouldn't be as bad if BMS had LiFePo4 factory default settings. Why JK decided to have Li-ion 4.2V default settings is beyond my understanding. I am sure 90+% of battery implementations are LiFePo4. And LiFePo4 settings...

No, I was referring to that guy from the video, Ray. In the comments on Youtube he was asked to show on video what is under the black cover but he preferred to leave that question unanswered. And he gave a very detailed explanation how great Jenny is that there are imposters on Alibaba...

I can't say $141 per cell was a cheap price. Actually it was higher compared to other Chinese resellers at the moment. I agreed to pay more to Docan because of the positive reviews on this forum. Nkon.nl was selling same cells but with the original B-stamped QR code at $124 including shipping to...

I am ordering now Seplos and Pace based batteries, and also will order new JK BMS to compare all of them side by side.

It's not always like this with China. I also had delivery delays with the other Chinese battery seller (Lithtech-Sinorise). Ordered $6500 worth battery packs from them but they couldn't deliver in time, blaming German customs for delay. It took some time but they made full refund even though I...

I know, it was just an example of what you can get from resellers. Don't want to bring bad news to you but QR code area looks sanded. You can clearly see different color and texture under the code and near the valve. Of course picture with black cover removed will be more informative...

These look different compared to your first photo. No visible signs of sanding.

If the seller was honest you would probably buy from somebody else :)

Unfortunately these are not official EVE terminals. Now the market is flooded with the cells equipped with pseudo EVE terminals. But they are easy to distinguish from original ones. Factory EVE terminal has stainless steel thread inserts while fake one has thread cut straight in aluminium. I...

Yeah, that's a problem that Alibaba protection in reality is nonexistent and remaining options are not great.. I already used majority of the cells I purchased from Docan. Assembled batteries were handed to my customer already. They are under very light load now, mostly in standby mode. We had...

You don't need to remove the black cover completely. Just pull gently from one side to the center and then you can push it back and it will stick to where it was originally. No signs of removal should be visible.

How much is this box? Is JK bms communication ports layout compatible with EEL box front panel?

Of course I used main Docan account on Alibaba. This one. It's 6+ years old with 749 reviews. There are only two "Docan" named company profiles on Alibaba. I am almost sure second account is also theirs. Often backup profile is created in case main account is blocked.

Dutch Caribbean? You made me cry... For JK I think it would be a smart move if they made layout compatible with Seplos layout. It could help new product adoption. Now there is a new BMS board but there is no compatible boxes available. Please share your experience how all this works.

Do you really think Docan is such a big worldwide brand that other Chinese companies make their replicas? I always use Alibaba app or Whatsapp to communicate with suppliers, it's way faster and more convenient than emails.

I still have one 4pcs unopened box of Docan cells. Don't want to remove the black cover though as I probably will not be able to sell them.

Didn't expect forum engine to expand screenshot files to full width, sorry for bad formating.

Has anybody tested whether lost settings bug has been fixed in 14.15 firmware?

He created new account. Old account and all posts have been deleted. But he is not active on this forum, only 11 messages, latest one dated Aug 22.

New JK is suitable for proper battery cases, it has communication ports board that you can attach to the front panel of the battery case. And it should be able to communicate to inverters directly, without using any third party solutions. Previous version can't talk to inverters even though it...

It's not only EEL. Now Nkon.nl also sells boatloads of cells with these terminals. Other resellers also offer them. Some factory in China started mass production of these terminals and now they are everywhere. Resellers are trying to copy the look of original factory EVE cells but this time...

I confirm that. They call it DDP but actually it is not. I asked Jenny Wu this question about VAT, she answered there was no way to use or refund their so called VAT. They can just print VAT amount on invoice and that's it, it is not properly paid and registered in the VAT database. Also I...

2.8cm maybe? Definitely there is no need to drill as deep as 4cm, 2 cm should be more than enough. So you damaged the first cell and then did the same to two remaining cells? Once I considered buying LF280K cells without welded terminals from NKON but I have access to laser welding, would prefer...

Yes you can see that color change but it's not easily noticeable. It's when you remove the black cover you can clearly see that sanded spot. Please share QR code pictures when you get your cells. Who knows, it's possible that US market is in a privileged position compared to European and you...

Could you please share details of your cell purchase from the warehouse in Poland? Which company sold you those poor performing cells? Please post photos of your cells. I am asking because I ordered test batch of cells from the warehouse in Poland. They are with the same sticker as on the photos...