How To Buy Lifepo4 Safely And Not Get Fooled
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- Опубліковано 26 кві 2023
- In this video I tell about some of the ways we get fooled when we buy Lifepo4 cells and how to reduce the risk. The short answer is to communicate directly with Jenny Wu at her gmail address. She will help you with your purchase from her company Docan Power. Her Address is Jennywu896@gmail.com . I also give an update about what I've been doing and what is coming up.
Thank you Ray. Permanent expansion is 100% avoidable. Cells should only be taken out of a fixture when empty to avoid permanent expansion. I don't use Jenny for my business but I use someone else some people claim (falsely) is unreliable. It's good to see you have found someone great, just like I have to do business with. I too always get flat, new cells, that always meet specifications when tested at the 0.5 c in the spec sheets. You seem to have a good heart, I appreciate that, keep up the good work.
Glad to see you back. Can't wait to see more videos from you.
Honesty is your biggest skill!
Glad to see ya doing well! I can stand behind Jenny Wu too. I've been buying from her almost a year and I'm a very happy client and she's got US warehouses. Jenny Wu is definitely the one to go too for DIY Lifepo4 Batteries. Glad to see ya back, sorry to hear about the ice storms. Looking forward to the upcoming videos.
Recently discovered your channel when researching how to make my own battery. I have no doubt your suggestions and the education you provide will save me much heart ache on ordering and assembling batteries. Also in CTX and have had my fair share of power outages! Thank you for the time you put in on the videos.
Good to see you back neighbor! I'm still cleaning up from the ice storm here (between Driftwood and Wimberley), it set me back on all my other projects at least three months. I've never purchased anything from Jenny Wu but she has an excellent reputation on all the solar forums I haunt. Thanks for all your hard work on this channel.
I brought 64x LF280K EVE cells from Jenny Wu, used the email you provided. All tested above capacity. She was very good to deal with. Got them shipped to New Zealand.
What did you build with these?
@@bluetrepidation With 64 cells you can build the house and power it for a long time. That is quite a commitment.
Jenny Wu from Docan is best for Latvian OffGrid.👍
@@bluetrepidation Put them into 4 packs for my off grid property, combined with 17kwh of solar panels. Should give me 3 days of backup during winter.
@@mikejenx very nice
Nice to see you back Ray.
Nothing wrong with keeping busy, it's what keeps us so young.
All the best to you and the family
Man I just love your videos. I saw your previous videos about Jenny Wu and decided such a nice guy couldn't be wrong. I've been ordering cells from Jenny ever since. Great experience. Both my house and boat now run on LiFePo batteries supplied by her. With a bit of help from your videos (and some others) I was able to build these great systems that now power my things. I'm now looking to expand to friends and family. Shoutout from a thankful bloke from The Netherlands! Keep up the good work.
welcome back, Ray! i bought my cells from Jenny Wu on your advice and couldn't be happier with them. thanks for taking the time to make these videos :)
Good to have you back Ray. Looking forward to seeing more videos from you.
Figured that's why you've been absent. Been there with only a little home lot -- will never forget the cannon-shots of trees breaking in half in the nearby woods and months before full electric power was back. Glad you're done enough to make videos. Welcome back!
Great to see you're back, Ray. From your post-ice-storm videos the trees sure did look in a sorry state.
It's good to learn new skills. In addition to your can-do attitude, I'm sure your previous construction experience has helped you get up to speed that bit more quickly. It will be good to see the results of that on this channel.
Glad to see u r back Ray. Looking forward to more of your videos.
I'm looking forward to seeing your updates and you showing off your new welding skills.
Ray, good to have you back!!! Congratulations on learning to weld. Looking very forward to your battery content with detail on BMS selection
Welcome back. I've missed your videos. I like how thorough you are in all you do. I've always wanted to learn to weld, so it pleases me to hear about your experience and I'll look forward to you sharing your projects. Thanks for the info on Jenny.
Nice to have you back Ray, thanks for the update and, yes, we d follow your advice, I emailed Jenny after your first video about batteries and she kindly replied immediately with detailed prices of various cells, shipping, custom and more. She also provided me with the price for the 304Ah which I shall purchase as soon as my solar shed is completed, solar shed by the way, that I've designed and built in a very similar fashion to yours, insulated from the outside as well as from the inside and over the roof with controller climate. Once again thank you for sharing with us our findings and valuable information. Kindest regards from the UK
Good to see you back .
Nice to see you again Ray, looking forward to more cool stuff
Great video Ray. I'm looking forward to your future projects.
Glad to see you again, and I hope all is well with you and yours.
Good to see you back Ray 😀
Nice to see you back 😊
Thx Ray. Looking forward to more videos on your system.
Good to have you back Ray. Yes, recovery takes time...a lot of time.
Thanks for Jenny's email address.
It's good to have you back
Great to get some news again. Last September I ordered 24 X LF280 cells from Jenny Wu. I finally got them end of December and had no information on the whereabouts in between, so I was a bit worried. But they‘re great, all flat, all above nominal capacity and meanwhile working fine. So thank you for all the most valuable information on how to build battery banks!
Welcome back, been busier than a one arm painter balancing on a beachball.
Glad to see u back....
So nice to hear from you
I would figure anyone running a ranch would be a jack of all trades 👍
Cheers
Thanks for the update Ray.
Over the last 18 months or so I've bought 64 cells, 280kn EVE cells from Docan Tech in 4 transactions of 16 each. Every time I got exactly what I was promised, exactly when it was promised, at a fair price. I have a 64 kWh battery system now running my place and they've all been 100 percent reliable and done a great job for me. Just another vote for Docan from a very happy customer.
heya ray, so glad to see you back and wel again
Glad to see another video Ray. Don't let Google press you to hasten and do things you don't want to. I like you because you are genuine. Just take care and build cool stuff :)
Hi. I'm glad to see you again. Thanks for your videos.!!
Wow. Welcome back. We missed you.
You do not owe us anything ;)
If there was an account , I would owe you , but at this time can not afford to buy the batteries - but your info makes closer to being able to buy sooner ;)
Thanks again
Glad to see new content will be watching
I have also ordered from her, and tomorrow cells will arrive to Poland and I will start testing! I'm really exited
Hi Ray, I can second everything you say about Jenny, I contacted her about september last year about pricing me 16x 280ah cells, she came back to me straight away witha price, this was above my budget, she offered me 230ah cells at $80 each plus shipping, she sent me an alibaba invoice, I paid and cells took around 6 weeks to the UK, I built my battery in the style you do yours and have been cycling them every day, not one problem as yet, I felt dealing with Jenny was easy with no messing,it just works as it should, thanks for your efforts, all the best Dean in the UK
Morning Ray from Australia. Miss you, mate.
I've now bought 32 cells from Jenny Wu per your recommendation. All arrived perfectly new and by far the best prices for new cells. I just ordered 16 more cells for $108 per KWH (that includes shipping, Alibaba fees, & tax).
Thanks Ray, your word means alot!! Very thorough guy
Good to see you back. Been wondering if you have been having too much fun scuba diving or got taken hostage down in Mexico.
Can i say welcome back from uk.I have watched all you build videos attention to detail best there is.
Me too, I bought 32 X LF280K EVEfrom JennyWU and she is really nice to deal with and follow up all your question. Looking forward to get more soon, hopefully price drop a little
As always, thank you for your tips, Ray. And for finding and sharing with us an honest seller.
P.S.
Not only your videos change my smartphone's display colors, and are only available in 60FPS, it's buggy in some instances, etc, but now I also notice that the volume is kind of really low. On maximum volume it sounds like medium volume in any other video or media that I watch on my smartphone.
So I'm now even more curious what's up with it, if it's the camera you use, or if it's a UA-cam setting that's accidentally turned on or what. You might want to look into it, because maybe it also affects what age groups your videos reach or something like that.
If anybody has any idea about what it could be, let us know.
Thank you for the reply sir. The most expensive part of my off grid are the batteries
Welcome back! Interesting you picked up welding, the old Zappa “ necc is the mother of invention “ rings true yet again lol! I’m also a carp/welder/plumber/electrician- lol all the hats needed to maintain and build what we need. Electronics is one of the things I’m not up on as I’m finding out is so necessary for solar equipment. And seeing you work through it makes it easier for ( I’m sure) many of us to follow. I am interested in building a battery, and I’m wondering if you have a best choice for the info screen- lol, or even a list of parts you chose? If I missed it, I apologize and will have another look :/
Thnx, and nice to see such productivity as I might have had in my 20’s?!
I appreciate what you do sir. Thank you!
I enjoy your video’s Ray and appreciate you taking the time to share your knowledge! I’m getting ready to purchase some 105ah cells for a golf cart and they have a continuous rating of 3c with a max of 5c. These appear to be the same physical size as the cheaper 1c continuous 3c max so how can I tell if I’m getting ripped off? What information is available on the QR code?
I just finalized the purchase of 16 EVE 304 cells from Jenny Wu after having had very good and extensive email exchanges with her. In fact, I’d done so just minutes before seeing this video. It’ll be another 6-8 weeks before I get them, but I have every confidence that I’ll get the same good product that Ray unboxes here. I did mention to her in my original email that I’d heard about her from Ray. Thanks Ray!
Have you received the cells yet? Wondering about buying some myself. Best from the UK
@@tomstork4699 Yes, and I bought another 8 so that I can have three 24v banks in parallel. The cells were in top condition and I couldn’t be happier. I also decided to purchase a couple of extra cells such that if any one cell were to fail, I can just drop in one of the backups.
Been missing you. I noticed that you are in my thoughts the same way that Jenny is in yours. You have never told the viewing audience to go against the engineering documents. I appreciate that. Good luck with the farm and your family. Make the videos when you can
Thanks so much.
Been wondering where you've been ,I thought maybe you gave up the UA-cam thing since it's now in the open that you're an original gangsta! haha
Thank you
Thank you.
Thanks Ray, just contacted Jenny.
when are you going to hook up the power shed?
I have been working with Jenny for 2 years. Orderd more than 200 cells (280ah) I would say about 3% of the cells I ordered from her was not flat. They where swollen by about 1mm to each side. She told me that this is ok that they are not flat.
All 100ah cells where always ok. It just happened with the big cells.
Also shipping was laging sometimes. Once it was about 5 months. So I have gone through a lot of troubles with Jenny and Docan.
I am still oredering all staff from Jenny. Also chargers, bms and other items. All is fine most of the fime but not 100% of time. So ve prepared that there can be problems too.
At the same time can not recomend anyone else.
Good to see you Ray. You look a but tired. Take arest, and we are waiting for new videos in the future.
I've seen a lot of people stating that the 300+Ah cells are much more prone to swelling. I'm wondering if this is just a simple reality of more mass being inside the aluminum case when combined with the natural swelling/shrinking of the charge/discharge. I guess I've never looked into what the thickness is of the walls on these prismatic cells...If the 280's and 300's are all the same then that would make sense.
Gotion 340ah is flat no swelling, since now only CATL 302ah is swelling, what cells you use?@@ericklein5097
I bought 16 -230ah cells from docan (Jenny's employer I believe, correct me if I am wrong.) We built 2-24v/230ah batteries, total cost with overkill bms...~$2000..We now have 860ah @24v in our 5R...(20k watts baby...whoo)I really like Docan and intend to buy any other cells I need from them.
Aa ray is finally back
Did you have to pay shipping since they came from the ,us, and does Ali express have hidden fees
I have ordered 8x 160Ah lifepo4 battery cells from Jenny today 06/07/2023. I have mentioned your UA-cam channel name. Pls make sure you get affiliate...thanks
Welder extraordinaire! Excellent. 😉
Thanks for the update Ray. It's good to see you back. I don't have a business, I'm just a DIYer with a small budget to do things as I can afford them. Does Jenny Wu work with people like me? Or, would it be better to have someone like you with an audience put together an order for a bunch of us little guys, and then come pick up the batteries we need? Just wondering. BTW, my project is with some 94Ah NMC batteries, but I need about 17 more to finish. Thanks.
Send her an email
Thank you for the video.... (grin)
I forget , what was a ruff cost per box of 2 cells ?
I enjoy your honesty so much that I reluctantly pressed the like button at 666 lol. Cheers n thank you for your time.
Great video, Ray. Seems Docan is becoming popular.
Thanks to Jenny Wu.
@@RayBuildsCoolStuff I have worked with her co-worker Lilly Zhang. She has been good to me.
Hello Ray, good to see you online again....there's one thing I wanted to ask you ...in your workshop you have a lot of grey gas bottles...are you doing electrolysis and that is hydrogen storage?
Regarding honesty / Chinese trading ....well I just had a bad experience with a inverter...they just do not react on emails ...lucky me it's only a bunch of capacitors that went to heaven with a bang and some smoke....I will replace them with a decent quality of capacitors hoping that the machine will then be reliable. ...
All the best to you
Frank
32% oxygen mix for scuba.
Nice work. Can you provide a link where to buy from?
Contact Jenny Wu at jennywu896@gmail.com and she will get you what you need.
Heya, more batterie cell's that means more capacitie for you batteries nice
Ray, I got fooled. Aliexpress TLTX batteries. I found your channel right after purchasing them.
I’m so sorry you had a bad experience. I hope this info can help others.
I also ordered 12 280ah cells from jenny wu and i was able to get 300 ah on my batteries
The cells expand when charged. So you need to make sure you don't confine them too much. If you don't want pressure on the bus bars, use flexible ones or don't put the cells so close together or maybe us a bit of insulation between them than can compress with the expansion. The chemistry by which they expand has more force than your house sitting on top of the cells.
The manufacturers advise that you compress them with 300Kgf to prevent expansion.
Expansion happens within the structure of the cell. The cell itself doesn't expand from that. The architecture of this type of cell is very stable. There are some good videos about this from the YT "the limiting factor". The expansion we are limiting is a different issue related to gasses in the cell and is something that should be managed. This has been misinterpreted by some people that sound like they know what they are talking about. Real life experience has proven otherwise repeatedly.
@@RayBuildsCoolStuff I think there are multiple things and people are conflating them. The gas bubbles are valid, compressing the cells to help those to distribute upward I have seen reference to.
Do you have links to valid sources on these manufacturers. All you find is imposters and the actual Eve Chinese website has no datasheets or tech info on it.
I never talked to Jenny Wu, but i heard she's reliable. But you can only know if you once had a severe problem with a shipment. If everything wents well, its fine - but if someone really is trustworth will be revealed if there's a problem!
Server rack batteries cost about the same but come with way for features.
If you believe that then you have many choices but it isn’t close to factual.
Remove the black covering and see if the QR codes have been altered, if you see sanding marks around the QR code area, these are counterfeit cells.
I looked and there are no scratch marks.
@@RayBuildsCoolStuff Please show this in your video, there are some forum chats of an imposter docan selling cells but when the area under the qr code is removed there are sanding marks to show it has been re-lasered.
Greetings from Stockholm Sweden Europe 🙂🇺🇸🇸🇪
👍👍
Looks like Jenny's email might be wrong in the description. I just got my first set of batteries from Docan tonight !
Thanks. UA-cam does that. I have to go correct it, sometimes more than once and then they leave it alone.
Busy boy
I ordered EVE 280K but was sent 304ah by Jenny WU by mistake, I end up ordering another 304ah to make 24v system
Did she have a valid company email id ?
Dealing by personal email risky!
Not risky at all. No problems have been reported and her service and integrity are unassailable.
Is it safe to order from her even if I get them shipped from China?
Yes, if you have the time to wait for shipping. I have done both.
Idk what to think when UA-camrs overly praise a sales rep.
Hello good morning, how do I find this seller on Alibaba? Could you give me the link? I'm seeing this video from Brazil after 10 months you posted. Is this seller still good? Thank you
I didn’t like this seller. I still prefer Jenny Wu. She can be reached at jennywu896@gmail.com
Would you recommend doing a wire transfer to Jenny Wu and getting the EVE 280K cells from China or buying them from the Texas warehouse? She told me I can save money from China. Also the 280 AH has 6,000 cycles ver. 4000 cycles from the 304 AH
I use a credit card. I’m not worried about cycle life myself. I would decide based on AH per dollar. Unless space and capacity are critical and then lean towards 304
@@RayBuildsCoolStuff I was originally going to get the 304 AH, so I will.. When you use your Credit Card do you still go through Jenny, and is the price comparable to a wire transfer?
@@stevenfrazier8939 the credit card offers some buyer protection. My card charges me 3% but then gives me 2% cash back so for the 1% I’ll take the buyer protection. I have purchased most of my cells shipped from China for the discount available but I had time to wait. I would definitely go through Jenny regardless of how you pay for it.
@@RayBuildsCoolStuff thank you
What is the name of the company that Jenny Wu works for?
Docan
@@stanislavmlcuch2085 Thanx
Hi, is it possible to carefully remove the black top sticker from one of these cells you just received, on camera? I bet that they are 100% fake grade A. Thanks.
I removed two of them and there is no evidence they have been altered and they are really sharp and clear QR codes. Testing soon.
@@RayBuildsCoolStuff They re-laser them. Didn't you find a spot on the aluminum plate showing tiny scratch marks? Apart from that, all grade A cells come with manufacturer test report. Maybe you can make a video showing that. Thanks.
@@cell_creator no scratch marks.
@@RayBuildsCoolStuff Too good to be true 🙂 Do they have a manufacturer report? If not, then they could be not to spec EV batteries. Not bad for solar as long as they are from the same batch.
Hello Ray, have you tried Amy Wan from Luyuan or Amy Peng from Quishou? These two ladies with Jenny belong to my verified sellers for cells.
When I mentioned in the video paying way too much for an honest interaction in the past, I was referring to Amy Wan. She sent great cells but the price per AH was way too high and her shipper let them sit in a warehouse in California for a month after they arrived in the states so it took too long to get them. I talked about this in another video called Reduce The Risk When Buying Lifepo4. I think she is a good person but not the best value.
There must be something different about dorcan. Of all cell i have purchased from dorcan (Daisy) have all been of great quality compared to other suppliers.. over 140 cells. The 32 i procured from other suppliers have been a disappointment.
I have mixed experience with Docan Power. Maybe you've been treated differently because of UA-cam channel.
When I made my first purchase from Jenny, I didn’t have a UA-cam channel and when I made my biggest purchase from her my channel was so new that most of my subscribers were family and friends. Maybe your mixed experience with Docan is because you didn’t buy from Jenny. I hear that more than a little. It’s the people that matter most.
I have mixed experience as well. I bought from Janny 16x EVE280k. Actually becouse recomendation on thih channel. Pre-buy servis is really good and Janny replays all the qestions fast . So all started well. Unfortunetly 5 of 16 cels I bought tested under capacity. And I tested with 20A only when acording to spec thos cels shuld test above 280Ah up to 0.5C (with EBC-20)! plus I repeted test of weekest cell. And 2 cels was only arund 274Ah. After long discusion and pushing ther and back, and claim on Alibaba I got refound of 48USD. So yes I have mixed feeling as well. Janny is ok'ish but Docan QA not nesseserry so good.
Thank you for your time
You have peeked my interest in trying some more LifeP0o4 batteries. I will contact Jenny Wu and give your name as a reference (so you will get your kickback) and see if I can I can afford some more. Nice video.
Hey Ray, I appreciate the battery build videos. Thanks. I contacted Jenny Wu and she emailed right back and has been communicating well. My only question I have on this video, and I feel silly asking, even when you deal with Jenny Wu the invoice is from Alibaba correct? She sent me a link to Alibaba with invoice details. I am a little apprehensive about pushing the button and sending over $4000 to them.
Yes the company will contract the transaction through alibaba but I recommend not using them for the initial communication as sometimes other people can pretend to be Jenny and alibaba doesn’t work hard to prevent that.
@@RayBuildsCoolStuff Awesome. Thanks so much for the clarification. I will order those today. Can't wait to build my first battery with the help of your videos.
Great to have you back - your channel had a big influence on my own channel and of course on the way of testing my cells :).
Let me share my experience with Docan Power delivering to Germany in Sept. 2022 after contacting Jenny via mail (the mail-address you named).
Well - i don't agree, at least when it comes to Europe. Even the cells from Docan Power were ok (not flawless, but good grade B cells), buying cells for my small business made quickly clear, that i might run into some tax issues because there might be DDP fraud on most of the orders from chinese companies selling on Alibaba, because there were no customs documents that stated that custom fees including import VAT were paid (yes, with DDP there mostly are no proper customs documents, thats a flaw in that process) - but my pro forma invoice (wtf...) clearly showed an amount added for DDP costs - thus including VAT. But: the total amount was even lower than Germany import VAT for Germany. A very very difficult situation. So even though i assumed import VAT had been paid for - actually i had to pay VAT on top, because of the lack of proper customs documents (like i get from DHL when ordering products in the USA).
So yes, cells were ok, contact with Jenny was excellent, tax situation was not (and Jenny was not able to solve that problem). So on my second order i bought cells from NKON (in the Netherlands) who seem to offer real Grade A cells and: for nearly the same price i buy cells from China including shipping and taxes. Well, from an EU country i can buy goods without import tax legally and i pay the VAT in Germany then (not totally accurate, but sth. like that). Costs are the same and if there is sth. wrong with the cells it's just a 3 hour drive by car to visit NKON ;).
Oh, and it's not only a problem with Docan Power when it comes to import taxes. I had many sellers contacting me and i always asked questions on the taxes - nobody really wanted to handle or understand European tax laws. So for everyone: be carefull ordering via DDP, you might get into trouble with German customs (even up to 10 years after purchase) and of coure do ne buy cells from Aliexpress. In Europe cells are available at good prices from european sellers.
I thought they had a European warehouse.
@@RayBuildsCoolStuff Well, tricky - they do not sell according to European tax laws. The warehouse is located in Poland, but Jenny told me european VAT regulations do not apply 🤔. Not correct, but i already paid and from my experience with US orders i assumed i‘ll get proper tax documents. So if you need those: ask Jenny before ordering, maybe she will come up with a solution. Not easy because those deals are b2b - you do not act as a normal customer and should know what you are doing (well, in the end i was not 🤪).
It‘s the way it is and i do not blame Jenny for that. The contact was great anyway, but due to the tax problems there will be no more business with chinese companies unless they offer a solution for this problem. Of course i could deal with customs myself - erm - nope ;). But i would be willing to pay for the service, unless the total price exceeds the price i pay in the Netherland.
As i wrote: none of the chineese suppliers i contacted (even with european warehouses) offered proper custums documents. But there are Chinese cheap battery suppliers who do offer proper VAT invoices for Germany for normal customers, they also offer German addreses to ship back faulty batteries. So maybe it‘s just a matter of time.
Hello Ray,
I ordered last year in June 48 cells ,280AH, from JennyWu and it was a pleasure to work with her. As you described, all the promises were kept, questions were answered correctly in time and the delivery time and custom cost and DDP were as predicted.
All cells were flat and at the same state of charge.
Now, almost a year later and a winter in which the cells were driving my heatpump for the house every day, the cells are still very uniform with a deviation of max 10mV.
I highly can recommend the cells I received and JennyWu.
HP 😊