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Yes Steve, I am NOOBIE here and feel good about this. As a NOOBIE can give you perception of how a NOOBIE can see things. Great to read you're a sharer and done so much for the people not being the Ferrengi [ :) ] - that is much appreciated, that is what has greatest value in life, help and help...

Yes, unfortunately. In March, I made a purchase of 16 grade "A" cells, these cells were to come from EVE and be the famous now LF280K-280Ah. Before I made decision to buy, I asked many questions. I received pristine report of capacity test, showing cells with excellent parameters - all tested...

For instance, such unknowns: B cells are the failed to pass certification. Why they failed? There are always some mismanufactured items on production lines. Sometimes you have mismanufactured items, that are still "usable" for some purposes. Like you can see on the video, there is a different...

I am playing with Daly 150A, 48V Smart BMS. Something that bothers me a lot is that the mobile app allows change protection parameters so you can set different values of protection parameters - if you want, you can set 5V for LiFePo4 battery as "cell volt high protect". I won't test whether BMS...

I read some interesting announcement on Globelpower about the EVE cells - look on this: https://www.gobelpower.com/eve-32v-280ah-rechargeable-lifepo4-battery-cell_p6.html Seems to be acknowledged problem on the market and EVE is or will be marking the worse cells with B printed on them. For...

I have no opinion about SKF. The video they made is quite good in that it shows different physical behaviour of different cells in a set. What they SFK presented is quite similar to the following method of measuring health of a LiFePo4 cells -...

It is very important to be aware what you can expect and good to see you are aware of the situation on the market and do not expect grade A LF280K for 150 USD a piece from an EU warehouse! Whichever seller you choose, I would advice you to get from the seller as much information and assurance as...

To cut bullshit, EVE sells LF280K for $ 250 a piece. Whatever offers you'll see about grade A batteries bought from EVE and being sold for $ 150 - think twice about how they make money selling "the same", manufacturers, cells for 60% of manufacturer's price? :)

I find it rude by Luyuan to take your work and brand it with their company name on every page but give you bare "Prepared by Steve_S..." on the bottom of first page - it looks like you work for them. Do you have some form of commercial connection with Luyuan?

Ok. In this situation, Luyuan should give him much more credit and distinction in the document he pointed.

The point is that it creates the false feeling that Steve works for Luyuan. That's it. I got the feeling and asked. It is up to Steve to accept it or not that people will have the feeling - very true. Case closed for me. However, Steve should answer himself - it is odd you speak in his name ;)

Very interesting to read your case but do I understand well that you see the battery being mainly for electric scooter and a back-up to some every day situations? It does not sound like a heavy use, what you plan. More like a light/occasional use. I would not be afraid of B grade cells, just do...

I did not think about your existing grid protection, I was referring to how you plan protect electricity created by the inverter - off-grid electricity. The grid is secured with the residual current circuit breakers because grid is designed to provide grounding and when there's leak to ground...

I have also ordered small batch from Docan in March - 16 x EVE LF280K 280Ah, checking QR code the cells were manufactured somewhere in December 2021. Was extremely disappointed to receive swollen batteries - sold as grade A, "new cells". Docan sold some shit to all of us - won't buy anything...

I've been provided test report by Docan before purchase.

Generally, it was a busy time for me since May and the disappointment made me resigned. Recently noticed your thread and wanted share and confirm that I got the same shit. These pictures show deformation of the received batteries - more or less, similar deformation. Batteries are swollen on the...

Yes, I think this is what starts happen. Grade A/B are being presented by some re-sellers, like the Globe Power, as ESS or EV grades. It would be perfect if manufacturer was deciding on the purpose a cell can serve - they do the research on products they build and know best what types of...

The report I was presented, had checking date 2021/8/7. The cells I received had QR code that decodes to December 21/January 22. Moreover, before shipment I was presented with pictures of cells put together that are perfectly square, without distances between them - could not replicate this...

That's ok, if you expect this grade B shape and that's the problem with LiFePo4 cells - they have long life expectancy, 3000-6000 cycles. If you were cycling them everyday that gives 8 to 16 years. If you buy the A grade, you expect to have the longevity. If you buy B grade, you still may have a...

I will perform thorough testing in the next 2-3 weeks, will provide report. I do not expect these cells reaching their capacity but we'll see.

I'll give you advice to change your mind about the Edecoa inverter. It likely is one of the Chinese inverters that do not have grounding capability or the grounding is poor. If you plan connect one/two devices to it directly, without spreading the electricity from this inverter to a set of...

I got an update of the app, right now on the version 2.2.5 I could change password and seems to be fairly safe. Once you change the default password, the new password is required to access the configurations and full view of batteries so I am a bit assured about safety of my battery now.

Just to add, to honesty of Globelpower, when you check shop of EVE on Alibaba - they sell the 280Ah cells for 252 USD/piece (https://www.alibaba.com/product-detail/EVE-lf280K-lifepo4-Battery-Cells-280Ah_62430842455.html?spm=a2700.shop_plgr.41413.19.19e77c16YRsFy5) How sub-sellers could sell...

You can tell this guy the same -> He received his "super car", it drives etc. Rain rains and he can hide in it, maybe turn on heating so what is wrong with this guy, should he be happy? These batteries will likely work for some time - cycled once a week maybe even for their lifetime (5-8...

I am not referring to how Gobelpower "match" cells, just to what pointed about accessibility of LF280K cells and how they group them, presenting 3 groups: ESS, LSEV and HSEV. The HSEV is what EVE, as manufacturer, sells for 252 USD - grade A. The LSEV Gobelpower selects from the "waste" they buy...

It is about honesty... Docan lies when compared to Globelpower, Globelpower does not hide the cell you can buy from them for the same price won't have guarantee of matching capacity test. Personally, I regret buying from Docan and only after making the mistake and learning here what happened...

Here you are wrong - everyone cares. I believe you are being ironic to make fun of people's run for best deal. Is it bad? Because of this care, these companies like Docan become scammers as not many wilfully decide buy B grade cells - so the scammers promise quality, show pristine test results...

It is kind of normal that these Chinese companies pretend to sell something better than they sell, just to get things moved. I had better opinion about Docan, based on what seen on the Web about them. Having experienced and understood the situation... never again Docan for me!

Does Luyuan have warehouse in the EU? Perryfranz pointed he must buy from a vendor who has a warehouse in the EU.