TH-cam keeps replacing my thumbnail for this video as it violates their Sex and Nudity Policy. I appealed several times now and they confirmed it's not violating their policies but their software keeps removing it. And I keep uploading it. 😁 Got an open case with them now. So if the thumbnails looks a bit... different, they just removed it again...
I just have to say, I absolutely love your channel!!! You have something that is extremely rare these days! A wonderful and hilarious sense of humor! The best part is you are clean, not vulgar or filthy! You're not constantly throwing around four letter words that demean your vocabulary or intelligence! I hang on every word and every test that you do! You are thorough and complete! This is an expensive investment/hobby, your experience and knowledge are much appreciated here! Thank you for being there and may God bless you and yours!
Many vendors are selling bloated cells and saying they all are bloated from the factory. They also sell them as 310 or 320 amp hour cells. New cells are not bloated, and will not bloat unless abused, and the manufacturer rates them as 304 amp hours. They may indeed test higher, but many vendors are not telling the truth. I would have to check the spec sheet for the tail current on a standard charge. Looks like you received quality cells. Yes, I personally use 3.1v, but certainly not below 3.0v. The cell temperature will rise below this by about 5 degrees C. FYI, temperature differences can cause the difference in capacity as well. If you are really interested, take them into a temperature controlled environment for testing.
Hello Andy, I've been waiting for someone reliable to review these Chinese battery and found your video. Its fun watching your video keep up the good work. Fan🇵🇬
I have just realized the amount of time you just said "good morning" and "good evening" On behalf of us that can't wait your videos everyday we apologize and greatly appreciate the time you put in just to testing these cells. Thank you. Thank you Thank you.
Thank you so much! Not many people see what's behind making these videos, editing, uploading, thumbnail, description, links, and reading and replying to comments. It's almost a full time job.
Coming back after ordering from this supplier at your recommendation, and I must say that working with Amy was nothing short of a pleasure. Stock seams to be a bit limited right now, but she was able to get me 16 cells out of their US warehouse. Can't speak for quality till I receive the cells, but I am highly optimistic given the professionalism on display.
They look like they have almost doubled the energy density compared the older LFP batteries. Those 304Ah look about the same size as a Winston 160Ah cell. Very impressive.
A little suggestion you might try when you run discharge and charge tests. I don't know how many sequence steps your tester allows but if you insert a 5 minute no load rest gap every 15-20% state of charge points you can see how much terminal voltage drop to expect at your discharge rate when it picks up discharge again. In a five minute rest period the cell should recover to no load rested voltage. Five minute rest may not be enough to fully recover to no load equilibrium below 20% state of charge, The terminal voltage drop for a given cell current will give you an additional cell matching indication. Truely matched cells will have only couple of mV difference in terminal voltage drop for same discharge current. The terminal voltage drop is not just the cell resistance x current. If you remember the issue with active balancer if the cell terminal voltage drop does not match for same cell discharge or charge current the active balance may transfer in wrong direction. At 40 amp charge and discharge current (15% CA) I would expect about 35-40 mV terminal voltage shift after equilibrium reached around 20-25 degs C from no load rested for a cell in 280-300 AH range. The measured cell resistance voltage drop of 0.2 milliohms x 40 amps is only 8 mV of that 35-40 mV drop number. This terminal voltage drop is dependent on temperature and gets much greater below 10 degs C.
Hi Andy, new to your channel a week or 2 ago I came across it and have now watch all your vids, I'm retired now and have been setting up a camper trailer to leave sunny(not) Victoria and tour up the east coast and follow the sunshine, returning to Vic during the warmer months. My setup started with AGM batteries but after thinking about the 50% suggested max drain this was a joke, so searched the forums and youtube for information on LPF, a week ago I placed my first order for 4 EVE 105Ah cells from Luyuan (also Amy) this was one of the suppliers mentioned on the DIY forum but it was your channel that made my mind up after learning so much from your videos, cheers.
Thank you very much for your feedback, Peter. Great to hear you've taken the plunge now and ordered some cells. The 105Ah are next on my list to test. I already have them here... The border QLD/NSW is still closed so you won't make it far in this direction.
@@OffGridGarageAustralia I wont be starting to head north until about Feb or March as I start my new life around xmas day in Portland chasing Tuna and Kingfish (i'm an avid kayak fisherman) then when it cools a bit I will head north
Andy, interestingly I've seen EVE are selling storage grade280Ah and 304Ah cells themselves with their normal high-contact dual nut terminals. The 280Ah ones are about €83, which is amazing value. They're branded as EVE|22 whatever that means... So they're not really rejected B grade, and they're rated at 1C. They probably just failed the 30 seconds 2C test or something. Of course I've only recently received 20 more QSO 304Ah cells at over €100 each 😭
Ya, me too. I really want to build a 16S2P battery with 310Ah cells. At about $100 each I think its a fair price but the now very high shipping cost and extreme delays at the Port of LA/Long Beach is a concern.
The only issue with setting cutoff voltage to 3.1 for discharge is the voltage drop when pulling large currents, triggering a premature shut down. The terminals are too weak to allow cranking down the busbars to try mitigate this
Thank you for the detailed analysis of these cells, I've been looking for the grade A cells to get, and there are some unknowns in Alibaba, so this video sold me.
Imagine 16 of these! Thumbs up and subscribed! Set skrews or studs! Those are huge cells! Cost vs 280s? 6am passion! Wish Australian or American made! 304ah is what in kWh? 304ah improves my days of autonomy! Appreciate your efforts!
Chinese manufacturers do not have to pay royalties on LiFePO4 cells, but those patents expire in April of 2022, so I expect there will be more manufacturers next year.
Andy, Your Videos and content are great. Many of us are trying to replace batteries in a boat, yacht or van, so just 4 cells, battery box or housing and appropriate bms is required (1,2 or 3 12v batteries). Out of all your videos I see lots of content but not something covering this basic and and essential need. Also on your web site you havent updated the spreadsheet of costs with this 5 th delivery or 304ah batteries. Thanks so much for your enthusiasm
One way manufacturers squeeze in more capacity in cells is they make the connection between the terminal and the electrode shorter thus making more space inside =)
I'm tossing up between a 24 V and a 48V system, but where I need to put it (ie, roof) only gets a limited window of solar due to trees in a Council conservation area nearby. I'm really interested in decent 304 AH cells as compared 272 AH cells as there's a better chance I won't run out of battery. Obviously I will need to have plenty of high wattage solar panels to feed into any battery... This video is of particular interest to me because of this. Well done Andy.
It’s nice to see the super imposing in different colours, on the curves. I personally favour 80% DOD as a safety margin for longevity, although I agree with boundaries being pushed as specs change after all it’s all science. Good video.
Thanks Jeremy. I personally don't mind the 90%DoD from time to time if needed. For daily usage I use not more than 30-50% anyway and with the second battery bank coming online, this will even half.
Hey Andy, I ordered a set of these a while ago now. Unfortunately I haven't had a great experience so far. First of all they have sent the ones with studs, not holes to use my own studs, so their photos don't necessarily match the product. It turns out either version can be ordered, but I wasn't given the option. They have also not been able to provide working tracking information for about 6 weeks now. But apparently they are now in Australia and should be moving. Hopefully this is a one off experience, but all the little hassles like this are the reason I try to purchase from an Australian supplier myself. The language barrier makes it worse, but their lack of transparency is a killer. I only hope the cells are decent, because it would be a total nightmare to claim any sort of warranty refund.
Thanks for sharing, Paul. That's indeed not a good experience. I had a similar one where I could not access the tracking information and it took a few weeks until I got a notification from the AU courier that they had a delivery for me. If you can get these batteries locally, that's definitely better for you, even the price might be higher.
Good info there Andy, I will be looking into these as I am chasing a new battery set up for my off grid set up. 48v just up the road from you in Brisbane. thanks for sharing.
Hi Andy, I am planning the solar battery set up for my 4wd and caravan that I will use to do a big lap of Australia in 2022. Do you agree with the recommendation against using these types of lithium cells as a secondary battery set up in an off road vechicle? I have read that prebuilt batteries, such as the Voltax are better suited to vibrations and movement you might expect when going through hundreds of kilometers of corrugations. Other sources claim 100aH cells are ok, but 200+ah is not good due to the thin alumunium housing. Do you think a DIY battery for an off road caravan is safe? Thanks mate
Curios to see the end of the video and test, but with very similar dimensions and weights I expect slim chances of 10% extra capacity... I think will be pretty much exactly same capacity max 2%... Lol I was wrong, nice cells!
Figures 304's are outa stock, I bought 16 280's for grand total 2179 us . Said to be in the US warehouse in 7-10 days then 7-10 shipping. Also figured out your Amy is Peng , the dyi forums Amy is Wan :)
I asked the dealer how much 4 cells door to door ( so including shipping and customs ) would cost . Converted 540 euros , delivery time 65-75 days , the cells are transported by train . Price wise I would agree , but the delivery time is unfortunately too long for me . Too bad , with the 230Ah cells I am very satisfied , the 304Ah I would have liked to install in the camper . GlückAuf aus Essen
Yeah, deliver times can be long sometimes. It took like 6 weeks for mine to arrive by ship. You never know how long they are stuck at the harbour and custom either... Sagt man das immer noch in Essen? Dachte der Pot is dicht und ist jetzt nur noch Museum?
My 270ah batteries are making more money than being in the stock market.. lol. I paid 100/cell shipped the beginning of this year. Shipping costs are also rising very fast. Glad I got mine when I did!
I recently ordered 24 x 280ah EVE cells. They also offered me 304ah cells but they only have 8% more capacity and they wanted to charge me 14% more for them, so I decided it wasn’t worth it.
Hi Andy, Love your youtube channel, it's both informative and entertaining. I live on a boat full time, so totally off grid. I have ordered 8 x 310 AH EVE batteries, 4 came in 4 weeks, the other 4 haven't arrived after nearly 3 months. I will be running 2 x 4 in series and then in parallel for 12 volts, also bought the BMS you suggested JK-B2A24S20P, no instructions came with this, same with the Cellmaster 8, no connectors, just the unit. I'm using 5 Victron 175W solar panels which gives me 875W, while my Victron 100/50 solar converter only supports 700 watts it's never gone over 668 even on a perfect QLD summer day, hence the 5th panel, I have room for a 6th panel if I need it, also using Victron 3000a inverter charger. Currently I have 720AH AGM batteries so the 2480 AH should allow me to use more appliances, like the washing machine and water maker and hopefully my new 2 plate induction electric stove. I have a Honda 2200 generator for those rainy periods to top up the batteries. It can all be a bit overwhelming for a layman like myself, but I'll keep going through your vids and hopefully get it all working, but every time I tune in your using a different BMS, makes it difficult.
Thanks for this info Bradley, it’s handy to know other peoples experiences with these items & dealing with Chinese and Alibaba or Ali express has always put me off, but I think I am going to give the 310ah batts a go for a 48v setup, so I will try following Andy’s advice & get one order of 16 cells split into 2 lots for shipping, which is always another concern, that I may have similar issues as you have had. I hope it has all worked out ok for ya, sounds like s great setup you have on your vessel/boat & sounds like you could have another PV panel without stressing ur Victron controller too hard. I have a friend doing a similar setup on a boat & he was telling me he was going to get some double sided panels as he want to run a fairly large ice making machine that will use probly 2kw or more. I think he might be shooting a bit high for the area he has to work with, but I’m sure he’ll work it out, he’s a bit of a Gyro Gearloose himself. Cheers
When this video came out with your links for the US stock they sold out with those prices immediately. Apparently whoever bought them all at those prices doubled the price and relisted them. They are well over $200 each now US. Probably best to just get them straight from Alibaba.
Hey, great cells from QSO! Don't check them all. I test 2-3 randomly and then start assembling the pack. If there is a problem with ane cell, you can test it later again. I never had a problem with the cables and the tester. It does not matter how good the large crocs connect as long as the voltage sense cable measure the voltage separately. They pull 40A regardless how good they are connected, resistance does not matter.
Finished testing them all and I'm really impressed. Just bought 20 more 304Ah EVE cells from QSO. I'll take out the four lowest performing batteries and match others for total Ah across two cells (using cell-level parallelism). I'll be able to use most of my 8m of sticky-backed rubber now too 😁
Thanks for the great videos, Andy. I'm talking with the Eve factory and my rep says she doesn't know about any automotive certification. Do you happen to know what the certification is called?
Question for you. In your opinion, and experience. I see many people trying to address/ prevent buldging/ swelling through compression. Even the mfg. Reccomends compressing for extended charge cycles, even though there is a lack of instructions on the process. Do you find different amounts of swelling in different Ah cell capacity? For example 200Ah vs. 280Ah
Tbh, I've never seen any cells 'breathing' during cycles. That's maybe mainly because I don't fully cycle my cells and use only a small amount of capacity with every cycle. Compression only gives you and advantage in terms of cycles if you have very high C rates. The test conditions specify the exact conditions for the test they did to get these additional cycles. Charging with 0.5C and discharging with 1C. Who does that at home? If you go away from that test environment, the benefit will be less or even vanish. I doubt you will see any difference in cycles over the life if you mostly stay in the 0.1C -0.5C range for charging and discharging between a compressed to none-compressed cell. It's good to see Will Prose and Lithium Solar coming to similar results and go away from this compression madness.
Hey Andy, Great vid as always :-) Wondering if the two cells that stored the most amp hours correlate to the cells that had the lowest internal resistance ??
@@OffGridGarageAustralia What was the result Andy, did the 2 cells with lower resistance have the higher ah capacity? it would make sense that they were the 2 better cells I would guess. Don’t know how you keep up to all this and keep the great vids coming. Thanks & Cheers
I want to start building my off grid system. Your video gives me hope that these batteries will deliver. I'm a little concerned about non US selling sites. Have you been burned 🔥 in the past on overseas purchases. If so, who would you recommend for future purchases. Thank you for your time and sharing.
Hi Andy, I ordered eight Eve 304 amp hour batteries from Amy. And they added on an additional charge with no explanation for $34. I asked Amy what that charge was and she said she knew nothing about it. Therefore I requested to speak on the phone and so far I have had no reply. Anyway just wanted to know have you heard anything like this happening before. Thank you I've been subscribed to your channel for months and I really appreciate all the info you bring.
Looks like you're going to need some more bus bars soon ;) What was the delivery time from order to arrival this time? And did you end up having to pay any extra customs charges?
I got these ones with air freight, so it took less than 3 weeks. Just a 12V battery so far, once I buy another 12 of these, I will need more busbars, for sure.
@@jamesharlow6603 I'll update the spreadsheet soon. Door to door freight was like US$160 for 4 cells. They should have them ins stock in the US, she said.
I received 32 such batteries (CATL 302 Ah) a month ago from Shenzen Basen.Almost all the cells were a little swollen. I wrote to the seller about this and he replied that these types of cells are always, from the factory, a little swollen.Please write to me when you receive them and tell me how they are yours.
The Catl cells seem like Eve rejects, so Grade B or C cells. Maybe half of them bloated, and varying internal resistance. I have the 310Ah (which seem to have been downgraded). Worst thing is the welded fixed 6mm terminal screws, with 10mm dia. Bases, obscuring most of the terminal. The supplied bus bars are too short for any bloated cells. I have 8, only 2 connections still use the supplied bus bars (tripled). I bought longer heavy duty bus bars, and filed out the holes to fit 10mm, individually measured and fitted. Other supplied hardware was 8mm bolts and nuts!!
@@mihaitaiosub unfortunately they arrived swollen and with some minor damage to them. not sure if i should send them back or at least get some money back. What did you do?
@@dauerwerbesendung7045 The cells I received were really a bit swollen, but the physical appearance was perfect. I did a capacity test and I got an average of 310-315 Ah, I measured the internal resistance of each cell and I obtained values between 0.2 and 0.24 mohms, so I kept them, I built the battery bank and so far everything is fine. What is the name of the company where you bought from?
Hi Andy, Thank you for all the valuable information you provide this community. I have just commissioned my 2, EVE 12 V 280 ah batteries on my boat. I am very please wth the performance so far. I will be purchasing 4 more cells to in order to have sufficient power reserves for the cloudy days. I have a question regarding the advisability of adding a 304 ah battery or should I stick with the 280 version? Is it possible to have three 12 V batteries in parallel if they are not the same ah capacity? Cheers Kevin
I don't think that is correct. You can combine different capacities in parallel as much as you like. It is true that they will charge and discharge in different rates but this is by design. The cell with the larger capacity will always charge and discharger at a higher rate.
Thanks Andy, this is one of the reasons I watch your videos. They stimulate discussion and sharing of experiences and knowledge. I’ll explore both options with Amy. Cheers Kevin
I believe Andy is right (as usual), it can be problematic when you mix chemistries this way, but then Ive heard others tell how they have a mixed setup of lithium & AGM and they have worked fine for them for several years, & they believe they compliment each other in different ways because of the higher voltage lithium helps keep the AGM set at a higher SOC. I have done similar things with lipo4 & AGM in a bus, but I dont leave it this way for too long generally, or whenI am away for extended periods, but Im sure you have this all sorted now & it works fine. Cheers
I got 8 of these cells from Shenzhen Basen, a little pricey but they were out of the 280ah ones. Mine have tested at about 320ah so pretty happy with them. I don’t have the test gear Andy has though.
Kieran, same as me, same supplier, same order, same changes. I received them one month ago and not yet tested, I'm very curious about, but I hope to have the same experience as you.
Same. 16qty 304Ah from Basen. Took just over a month to ship ti Sydney and then they sat in Sydney for a month as Basen forgot to pay some logistics fee. Arrived 1st Sept. First 8 have been capacity tested. 321Ah highest so far, 309Ah lowest. Happy
@@philipmay9874 this is super good to know. Thanks. I'm on a boat in New Zealnd, so I have not all the same instruments that Andy have, but I'll do my best to test the capacity soon. Thanks for your report.
This would require a BMS to disconnect and protect the pack when the weakest cell reaches 2.5V. And then there is really no way to tell how much there is energy left in the other cells. Such a test would be closer to real-world conditions, though.
As with all LiFePO4 cells, it's 2.5V. That the absolutely lowest voltage the cells can have without damaging them. There are variations with different chemistry, so please always follow the manufacturers recommendation for handling these cells. I've got all the specs and data sheets on my website for these cells.
@@OffGridGarageAustralia Thx for reply Andy. That’s what I suspected. Keep up the good work. Educating us in a fun way. I’ve learned so much. Not confident though if honest to do all the testing and tinkering. I’m discovering electronics from you, David pix and will prowse in my old age, simply because I want a solar system in the future, and wanting to be as green as I can and nit give power company my hard earned pension when it comes. I never had any real passion for Electrics or batteries until I decided I want to get solar, so this is a steep learning curve for me. I’m in my 50’s. Keep doing what you’re doing dear friend as I definitely enjoy your Channel the most. 🇬🇧🇯🇲
thanks mate nice witch battery to use depending complete on the load example i go to 500 volt x 300 amp = 150.000 watt i do not think this is a home use.
Hi Andy, thx for the video, I had been waiting to hear of a larger capacity cell. I have used your link to Alibaba & created a business account. Question. What cell & cert details need to be used ? Thx
Andy, I was unable to find the eve 304 amp hour 3.2 volt batteries price. Oh, with the manufacture you have described. I went to your link and it only let me to the eve 280 amp hour 3.2 volt pricing. Please help.
Great videos! Thanks so much for your expertise and knowledge. My question: I can’t find the US distributor for the 304ah EVE battery in US from your link in video. How do I do this? I don’t want to Alibaba to purchase through. Thanks
I received 32 such cells (CATL 302 Ah) a month ago from Shenzen Basen.Almost all the cells were a little swollen. I wrote to the seller about this and he replied that these types of cells are always, from the factory, a little swollen.How are the cells you received?
That is jaw dropping value, how much did shipping the 4 cost? I paid nearly double for about half the capacity about 2 years ago.. As someone who relies on my batteries full time this is exciting, they are even very close to the same size so they will fit in the same space I have now and double my capacity to make my winter easier and maybe even able to run an aircon in summer :)
Hi from germany ;) One short question: You have define a cutoff current of only 2Ampere. As i show in the datasheet it should be 15,2A (0,05C). Why did you had set these value exactly? I'm testing my all new LF280K at the moment and i did not get the full 280Ah out there. Greetings!
The longer you stay on constant voltage, once constant current stops, the more energy your cell will absorb. But as current decreases close to zero, the additional Ah gained become unsignificant. I actually went down to 0.2A but realised that it's not worth my time considering the difference in Ah added.
How can you tell if the batteries are in stock for US warehouses? I'm going to email Amy soon, but just wondering if there is a way to check, or where you are getting that info?
I made a series of video about how to order, what to expect and what the costs are. th-cam.com/video/21YY4HHdQYI/w-d-xo.html th-cam.com/video/nlqmZbT1nM8/w-d-xo.html
1% is very significant for me as it's the amount of energy I need to make one cup of tea:) And the QR code is just both the numbers you can see on the label.
Hallo Andy, schöne Grüße aus Deutschland. Du machst immer lustige und sehr informative Videos - wie auch dieses. Bin ein totaler Fan von Dir geworden. Durch Dich lerne ich noch nebenbei besser English, da Du Alles sehr deutlich und verständlich ausdrückst (ausdrückst, was für ein Wort). Ich habe seit dem Frühjahr eine kleine 48V Anlage mit 4 kW. Leider habe ich Deinen Kanal zu spät gefunden - mir wäre vieles erspart geblieben und es wäre weniger Elektronik in Rauch aufgegangen. Mach weiter so, ich freue mich schon auf die nächsten Videos. Liebe Grüße von der anderen Seite der Weltkugel von Mane (bayrisch)
@@OffGridGarageAustralia Hallo Andy, sorry. Ich schaue schon jahrelang TH-cam aber habe noch nie einen Kommentar hinterlassen und erst jetzt gesehen, dass du geantwortet hast. Freut mich echt. Angefangen habe ich mit einen 20W Panel vor ein paar Jahren, nur mein Handy über eine damals noch teure Power Bank betrieben. Habe im letztes Jahr mit Li-Ionen 18650 Zellen einen kleinen Akku in einen kleinen Koffer eingebaut und Handy und Tablet damit geladen 640Wh. Mit dem 20W Panel dauerte das Laden ewig. Dann habe ich eine Solarplatte von meinem Neffen bekommen. 300W Garantietausch. Brachte nach 5 Monaten nur noch 2/3 Leistung. Der Solarteur sagte defekt - Garantie. Ich habe mir das Paneel geschnappt (2/3 - komisch) und 5 Minuten später den Fehler gefunden. In der Dose war ein Wackler und hatte über die Diode geleitet. Nächstes Problem - Paneel 300W Akku 640W. Nächste Ausbaustufe geplant. Da ich an dem billigen Wechselrichter bis 500W keine 4S anschließen konnte, zu viel Spannung, habe ich mit 32800 Zellen einen Akku zusammengelötet - reines Hobby, alles Try und Error. Die Anlage war ursprünglich für 12V geplant. 12P4S LiFePO4 mit 800 Wh und habe damit meinen Bürocomputer betrieben. Dann ging es richtig los. 800Wh war mir zu wenig und habe Alles größer geplant. Auf 1000Wh erhöht und Rundzellen (damals noch ohne Zoll und MwSt.) in China bestellt und nach einem halben Jahr basteln bin ich seit einem Monat mit 15P16S 4000Wh und weitere zwei Solarplatten am Balkon 60 Grad Aufständerung online (900Wp). Wechselrichter Victron 3000 48V Inselbetrieb mit Umschaltung auf das Netz bei leerem Akku inkl. Victron BMV-700 und Cerbo. Betreibe momentan 2 Computer samt Tablets und Handy aufladen, eine Klimaanlage die die Hälfte des Akkus braucht und bin mehr als zufrieden damit (noch 😀) und habe in letzten Monat über 110 kWh eingespart, trotz eines schlechten Sommers. Wow, jetzt hoffe ich, das das nicht zu viel Information war - aber Du hast ja gefragt. Ich würde mich freuen von Dir zu hören, wenn nicht Du bist ja immer online. LG aus Oberbayern Mane
my 24 volt eve cell battery has been running without a BMS for three weeks now ,just an active balancer. every day the cells are perfectly matched . this never happened with a Daly smart BMS? What do you think Andy ?
Thank you so much Andy watch you all the time. I had just gotten a quote from Amy on eve 280 x 16 for like $2400 I tried to get her down to $2200 , she wouldn't budge. But hey at the price she quoted you for us guess what That right at $2200 hehe I'm going for the 304's I think. That should be the same price she quoted me for the 280's ( Go figure) tyty keep it up I've learned so much from your channel.
I wish you would have taken closeup video of the cells all put side by side. There have been several videos of people complaining that all cells above 300 Ah bulge. That is, that they normally bulge.
I tested my Zke-tester and it shows 1,8 to 1,9% more Ah than in reality. Tested with other chargers/wattmeters which i trust. So i assume maybe same with yours 309Ah minus 2% is 303Ah which nearly fits the labels..,
@@JeremyAkersInAustin Alibaba Company Shenzhen EEL. I only have a Dali BMS that i could wire up, but i am not sure if i could get a precise capacity test like with a smart shunt and a single cell charger.
Hi Andy, thank you for your funny and informativ video about these new 304Ah cells. I want to assemble a 608Ah 12 V from 8 x 304 Ah. Which BMS from Daly should I use (200A)?
@@OffGridGarageAustralia Hi Andy, thank you for your reply. After I saw your videos I changed my mind. I am going to build a 24V battery and a 24/12V converter between battery an load. So, if my load is 2400 Watt @12V, how should my BMS be rated: 200A (2400/12) or 100A (2400/24)? Viele Grüsse aus der Schweiz 😉
Great video, thanks a lot. My battery graphs of LF280k batteries show different curves on different temperatures. Without trying to be a smart-ass: Maybe you should record temperature graphs as well?
Om about to buy 8 of these 304 ah eve now but of you have a 8s 24v whats the max current you can draw out from them? And whats the max current you can charge them with?
How long did they take to arrive? I’m in Victoria and ordered mine about 4 weeks ago, I’m eagerly awaiting there arrival…awesome vids keep up the great work
Hi friend, I want to ask you something, I am new to this and I have a 12v 280ah battery bank in series for my 48v inverter but I want to increase my backup, I want to buy 12 304ah lifepo4 eve cells to make a 48v 304ah bank, the question is if I can connect the two battery banks to the same bus bar? Thanks!!
Just tried my 1st battery with this tester and I did something very wrong??? I charged to 3.625 not much soak as this was the highest battery while balancing the pack with the JK bms let it sit about 12 hours and the tester currently shows 3.2v 35 amp discharge 129.66 cap and 417.60 energy going to stop at 2.8v Did I get crap batteries or did I do something wrong( hope it just I'm jumping the gun and the curve will just go) ???????
TH-cam keeps replacing my thumbnail for this video as it violates their Sex and Nudity Policy. I appealed several times now and they confirmed it's not violating their policies but their software keeps removing it. And I keep uploading it. 😁
Got an open case with them now. So if the thumbnails looks a bit... different, they just removed it again...
LOL... PC gone awry ! fortunate noone has complained of frog abuse r something equally silly.
Those cells look damn sexy naked. Calm
Yaself haha
@@floatncoffee Ahhh!, that's it, right 😂😂😂😂😂
Its the underpants your wearing in the garage.
@@Daraghfly I don't wear und... 🤫
I just have to say, I absolutely love your channel!!! You have something that is extremely rare these days! A wonderful and hilarious sense of humor! The best part is you are clean, not vulgar or filthy! You're not constantly throwing around four letter words that demean your vocabulary or intelligence!
I hang on every word and every test that you do!
You are thorough and complete!
This is an expensive investment/hobby, your experience and knowledge are much appreciated here!
Thank you for being there and may God bless you and yours!
You are my battery, Professor. Thank you for your precise demonstrations and results! Bonser channel Mate!
Many vendors are selling bloated cells and saying they all are bloated from the factory. They also sell them as 310 or 320 amp hour cells. New cells are not bloated, and will not bloat unless abused, and the manufacturer rates them as 304 amp hours. They may indeed test higher, but many vendors are not telling the truth. I would have to check the spec sheet for the tail current on a standard charge. Looks like you received quality cells. Yes, I personally use 3.1v, but certainly not below 3.0v. The cell temperature will rise below this by about 5 degrees C. FYI, temperature differences can cause the difference in capacity as well. If you are really interested, take them into a temperature controlled environment for testing.
Hello Andy, I've been waiting for someone reliable to review these Chinese battery and found your video. Its fun watching your video keep up the good work. Fan🇵🇬
I have just realized the amount of time you just said "good morning" and "good evening" On behalf of us that can't wait your videos everyday we apologize and greatly appreciate the time you put in just to testing these cells.
Thank you. Thank you Thank you.
Thank you so much! Not many people see what's behind making these videos, editing, uploading, thumbnail, description, links, and reading and replying to comments. It's almost a full time job.
Coming back after ordering from this supplier at your recommendation, and I must say that working with Amy was nothing short of a pleasure. Stock seams to be a bit limited right now, but she was able to get me 16 cells out of their US warehouse. Can't speak for quality till I receive the cells, but I am highly optimistic given the professionalism on display.
How was the quality of the cells?
They look like they have almost doubled the energy density compared the older LFP batteries. Those 304Ah look about the same size as a Winston 160Ah cell. Very impressive.
A little suggestion you might try when you run discharge and charge tests. I don't know how many sequence steps your tester allows but if you insert a 5 minute no load rest gap every 15-20% state of charge points you can see how much terminal voltage drop to expect at your discharge rate when it picks up discharge again. In a five minute rest period the cell should recover to no load rested voltage. Five minute rest may not be enough to fully recover to no load equilibrium below 20% state of charge,
The terminal voltage drop for a given cell current will give you an additional cell matching indication. Truely matched cells will have only couple of mV difference in terminal voltage drop for same discharge current. The terminal voltage drop is not just the cell resistance x current. If you remember the issue with active balancer if the cell terminal voltage drop does not match for same cell discharge or charge current the active balance may transfer in wrong direction.
At 40 amp charge and discharge current (15% CA) I would expect about 35-40 mV terminal voltage shift after equilibrium reached around 20-25 degs C from no load rested for a cell in 280-300 AH range. The measured cell resistance voltage drop of 0.2 milliohms x 40 amps is only 8 mV of that 35-40 mV drop number. This terminal voltage drop is dependent on temperature and gets much greater below 10 degs C.
Yeah what he said...
Sounds like a great measure for an active balancer to include?
Hi Andy, new to your channel a week or 2 ago I came across it and have now watch all your vids, I'm retired now and have been setting up a camper trailer to leave sunny(not) Victoria and tour up the east coast and follow the sunshine, returning to Vic during the warmer months.
My setup started with AGM batteries but after thinking about the 50% suggested max drain this was a joke, so searched the forums and youtube for information on LPF, a week ago I placed my first order for 4 EVE 105Ah cells from Luyuan (also Amy) this was one of the suppliers mentioned on the DIY forum but it was your channel that made my mind up after learning so much from your videos, cheers.
Thank you very much for your feedback, Peter. Great to hear you've taken the plunge now and ordered some cells. The 105Ah are next on my list to test. I already have them here...
The border QLD/NSW is still closed so you won't make it far in this direction.
@@OffGridGarageAustralia I wont be starting to head north until about Feb or March as I start my new life around xmas day in Portland chasing Tuna and Kingfish (i'm an avid kayak fisherman) then when it cools a bit I will head north
Andy, interestingly I've seen EVE are selling storage grade280Ah and 304Ah cells themselves with their normal high-contact dual nut terminals. The 280Ah ones are about €83, which is amazing value.
They're branded as EVE|22 whatever that means...
So they're not really rejected B grade, and they're rated at 1C. They probably just failed the 30 seconds 2C test or something.
Of course I've only recently received 20 more QSO 304Ah cells at over €100 each 😭
Thanks!
Thank you very much for your ongoing support, Ray. You're the best!
Thank you for doing this I've been looking pretty hard at buying these!
Ya, me too. I really want to build a 16S2P battery with 310Ah cells. At about $100 each I think its a fair price but the now very high shipping cost and extreme delays at the Port of LA/Long Beach is a concern.
The only issue with setting cutoff voltage to 3.1 for discharge is the voltage drop when pulling large currents, triggering a premature shut down. The terminals are too weak to allow cranking down the busbars to try mitigate this
That is correct. Some inverters have a dynamic low voltage disconnect depending on the load. My Victron has that.
107 kWh of parallel batteries should prevent that.
Thank you for the detailed analysis of these cells, I've been looking for the grade A cells to get, and there are some unknowns in Alibaba, so this video sold me.
Thanks so much for testing these ⚡👍👍
No problem, thank you.
LOL "I was just about to ask" Thanks Andy, good review.
Any time! 😂
Imagine 16 of these! Thumbs up and subscribed! Set skrews or studs! Those are huge cells! Cost vs 280s? 6am passion! Wish Australian or American made! 304ah is what in kWh? 304ah improves my days of autonomy! Appreciate your efforts!
Chinese manufacturers do not have to pay royalties on LiFePO4 cells, but those patents expire in April of 2022, so I expect there will be more manufacturers next year.
Im watching this @ exactly 4:05am,, so its GOOD MORNING ANDY!!
What time zone is that in??? All video appear at 5am AEST.
Good Morning btw 😂
Andy, Your Videos and content are great. Many of us are trying to replace batteries in a boat, yacht or van, so just 4 cells, battery box or housing and appropriate bms is required (1,2 or 3 12v batteries). Out of all your videos I see lots of content but not something covering this basic and and essential need. Also on your web site you havent updated the spreadsheet of costs with this 5 th delivery or 304ah batteries. Thanks so much for your enthusiasm
Thanks Peter, I'm a bit behind with the spreadsheet...
I will do a proper and detailed 12V/4s battery build soon. Its on my list for future videos.
@@OffGridGarageAustralia Your doing a great job - thank you. thanks for considering
Thanks for the metric/english conversion. Thumbs up just for that.
One way manufacturers squeeze in more capacity in cells is they make the connection between the terminal and the electrode shorter thus making more space inside =)
I'm tossing up between a 24 V and a 48V system, but where I need to put it (ie, roof) only gets a limited window of solar due to trees in a Council conservation area nearby. I'm really interested in decent 304 AH cells as compared 272 AH cells as there's a better chance I won't run out of battery. Obviously I will need to have plenty of high wattage solar panels to feed into any battery...
This video is of particular interest to me because of this. Well done Andy.
Thank you very much for your feedback.
It’s nice to see the super imposing in different colours, on the curves. I personally favour 80% DOD as a safety margin for longevity, although I agree with boundaries being pushed as specs change after all it’s all science. Good video.
Thanks Jeremy. I personally don't mind the 90%DoD from time to time if needed. For daily usage I use not more than 30-50% anyway and with the second battery bank coming online, this will even half.
Hey Andy, I ordered a set of these a while ago now. Unfortunately I haven't had a great experience so far. First of all they have sent the ones with studs, not holes to use my own studs, so their photos don't necessarily match the product. It turns out either version can be ordered, but I wasn't given the option. They have also not been able to provide working tracking information for about 6 weeks now. But apparently they are now in Australia and should be moving. Hopefully this is a one off experience, but all the little hassles like this are the reason I try to purchase from an Australian supplier myself. The language barrier makes it worse, but their lack of transparency is a killer. I only hope the cells are decent, because it would be a total nightmare to claim any sort of warranty refund.
Thanks for sharing, Paul. That's indeed not a good experience. I had a similar one where I could not access the tracking information and it took a few weeks until I got a notification from the AU courier that they had a delivery for me.
If you can get these batteries locally, that's definitely better for you, even the price might be higher.
Good info there Andy, I will be looking into these as I am chasing a new battery set up for my off grid set up. 48v just up the road from you in Brisbane. thanks for sharing.
Thanks, Paul!
Andy, great stuff man!
2:14 you have to switch one of the contacts since the ohm measurement parameter shows overload. turn one of the connectors 180°
Hi Andy,
I am planning the solar battery set up for my 4wd and caravan that I will use to do a big lap of Australia in 2022.
Do you agree with the recommendation against using these types of lithium cells as a secondary battery set up in an off road vechicle? I have read that prebuilt batteries, such as the Voltax are better suited to vibrations and movement you might expect when going through hundreds of kilometers of corrugations. Other sources claim 100aH cells are ok, but 200+ah is not good due to the thin alumunium housing. Do you think a DIY battery for an off road caravan is safe? Thanks mate
Curios to see the end of the video and test, but with very similar dimensions and weights I expect slim chances of 10% extra capacity... I think will be pretty much exactly same capacity max 2%...
Lol I was wrong, nice cells!
Hahaha, you commented before finishing the video 😂
Andy, does this battery tester have the capability to test and plot the IR along the charge curve? That would be very interesting.
No, it does not.
It does not have this function. That would be really interesting...
Endlich machst du die Pakete auf ich hab mich das schon die letzten Videos gefragt was da drin ist aber ich habe gedacht ich warte einfach
Hahaha, klar hast du dich gefragt was da drin ist, hast aber nie was gesagt 😂
Figures 304's are outa stock, I bought 16 280's for grand total 2179 us . Said to be in the US warehouse in 7-10 days then 7-10 shipping.
Also figured out your Amy is Peng , the dyi forums Amy is Wan :)
Lot's of Amy's out there 😁
She just texted me last week and said they have stock in the US. But didn't say how much...
Thanks for the information and tests.
No problem. Thank you.
I asked the dealer how much 4 cells door to door ( so including shipping and customs ) would cost . Converted 540 euros , delivery time 65-75 days , the cells are transported by train .
Price wise I would agree , but the delivery time is unfortunately too long for me . Too bad , with the 230Ah cells I am very satisfied , the 304Ah I would have liked to install in the camper .
GlückAuf aus Essen
Yeah, deliver times can be long sometimes. It took like 6 weeks for mine to arrive by ship. You never know how long they are stuck at the harbour and custom either...
Sagt man das immer noch in Essen? Dachte der Pot is dicht und ist jetzt nur noch Museum?
My 270ah batteries are making more money than being in the stock market.. lol. I paid 100/cell shipped the beginning of this year. Shipping costs are also rising very fast. Glad I got mine when I did!
I believe prices will remain that high for a long time now.
With the “good night” and “sweet dreams” I was waiting for Andy to blow kisses to the camera! 😂🤣 After all he’s goofy enough to try it!
I'll do it next time, thanks for the suggestion 😘
I recently ordered 24 x 280ah EVE cells. They also offered me 304ah cells but they only have 8% more capacity and they wanted to charge me 14% more for them, so I decided it wasn’t worth it.
Yes, that's sometimes the case. The 280Ah are perfect.
Hi Andy, Love your youtube channel, it's both informative and entertaining. I live on a boat full time, so totally off grid. I have ordered 8 x 310 AH EVE batteries, 4 came in 4 weeks, the other 4 haven't arrived after nearly 3 months. I will be running 2 x 4 in series and then in parallel for 12 volts, also bought the BMS you suggested JK-B2A24S20P, no instructions came with this, same with the Cellmaster 8, no connectors, just the unit. I'm using 5 Victron 175W solar panels which gives me 875W, while my Victron 100/50 solar converter only supports 700 watts it's never gone over 668 even on a perfect QLD summer day, hence the 5th panel, I have room for a 6th panel if I need it, also using Victron 3000a inverter charger. Currently I have 720AH AGM batteries so the 2480 AH should allow me to use more appliances, like the washing machine and water maker and hopefully my new 2 plate induction electric stove. I have a Honda 2200 generator for those rainy periods to top up the batteries. It can all be a bit overwhelming for a layman like myself, but I'll keep going through your vids and hopefully get it all working, but every time I tune in your using a different BMS, makes it difficult.
The 8 x eve 310AH batteries totaling 2480AH cost $1430 AU including GST and shipping. About the same as 4 x 110 AH AGM batteries.
@@bradleyhills6203 Thanks for this info
Thanks for this info Bradley, it’s handy to know other peoples experiences with these items & dealing with Chinese and Alibaba or Ali express has always put me off, but I think I am going to give the 310ah batts a go for a 48v setup, so I will try following Andy’s advice & get one order of 16 cells split into 2 lots for shipping, which is always another concern, that I may have similar issues as you have had. I hope it has all worked out ok for ya, sounds like s great setup you have on your vessel/boat & sounds like you could have another PV panel without stressing ur Victron controller too hard.
I have a friend doing a similar setup on a boat & he was telling me he was going to get some double sided panels as he want to run a fairly large ice making machine that will use probly 2kw or more. I think he might be shooting a bit high for the area he has to work with, but I’m sure he’ll work it out, he’s a bit of a Gyro Gearloose himself. Cheers
are you referring to the grade A battery from EVE manufacture in the price list you mentioned. because I quoted EVE with 150 USD for 280 AH
No, all cells I ever bought were from re-sellers. I never bought any certified cells from EVE directly.
When this video came out with your links for the US stock they sold out with those prices immediately. Apparently whoever bought them all at those prices doubled the price and relisted them. They are well over $200 each now US. Probably best to just get them straight from Alibaba.
I heard this before. Very strange...
Andy, I thought that you're supposed to hook up any leftover BMS leads to all be ganged together on the last cell ?
Finally got my EBC-A40L. Am testing QSO 304Ah batteries from June 2021!
I'm not too impressed with the crocodile clips, and the cables seem a bit light for 40A...
Got 312Ah for my first one, which is pretty impressive for "b-grade" batteries that are over two years old.
Hey, great cells from QSO! Don't check them all. I test 2-3 randomly and then start assembling the pack. If there is a problem with ane cell, you can test it later again.
I never had a problem with the cables and the tester. It does not matter how good the large crocs connect as long as the voltage sense cable measure the voltage separately. They pull 40A regardless how good they are connected, resistance does not matter.
Finished testing them all and I'm really impressed. Just bought 20 more 304Ah EVE cells from QSO. I'll take out the four lowest performing batteries and match others for total Ah across two cells (using cell-level parallelism).
I'll be able to use most of my 8m of sticky-backed rubber now too 😁
Thanks for the great videos, Andy. I'm talking with the Eve factory and my rep says she doesn't know about any automotive certification. Do you happen to know what the certification is called?
Thanks Andy
OH, Thanks for the live sneak peak it look good
Question for you. In your opinion, and experience. I see many people trying to address/ prevent buldging/ swelling through compression. Even the mfg. Reccomends compressing for extended charge cycles, even though there is a lack of instructions on the process. Do you find different amounts of swelling in different Ah cell capacity? For example 200Ah vs. 280Ah
Tbh, I've never seen any cells 'breathing' during cycles. That's maybe mainly because I don't fully cycle my cells and use only a small amount of capacity with every cycle.
Compression only gives you and advantage in terms of cycles if you have very high C rates. The test conditions specify the exact conditions for the test they did to get these additional cycles. Charging with 0.5C and discharging with 1C. Who does that at home? If you go away from that test environment, the benefit will be less or even vanish. I doubt you will see any difference in cycles over the life if you mostly stay in the 0.1C -0.5C range for charging and discharging between a compressed to none-compressed cell.
It's good to see Will Prose and Lithium Solar coming to similar results and go away from this compression madness.
you don't mention the size of the batt terminal that contacts the busbar? It looks a bigger area to me much better than the welded grub screws.
Hey Andy, Great vid as always :-) Wondering if the two cells that stored the most amp hours correlate to the cells that had the lowest internal resistance ??
That is a good question. I didn't pay attention to that 🤦♂️
I guess, I can just measure again...
@@OffGridGarageAustralia also very interested in knowing this...
@@franks2354 I'll do the test! 😉
@@OffGridGarageAustralia What was the result Andy, did the 2 cells with lower resistance have the higher ah capacity? it would make sense that they were the 2 better cells I would guess. Don’t know how you keep up to all this and keep the great vids coming. Thanks & Cheers
I just ordered 16 of the LF304 grade-a cells from NKON, I am curious about the test results when I receive and test them
Ive used EVE cells, they are good quality cells.
I had no problem either so far. I think they are brilliant for that price.
I want to start building my off grid system. Your video gives me hope that these batteries will deliver. I'm a little concerned about non US selling sites. Have you been burned 🔥 in the past on overseas purchases. If so, who would you recommend for future purchases. Thank you for your time and sharing.
Hi Andy, I ordered eight Eve 304 amp hour batteries from Amy. And they added on an additional charge with no explanation for $34. I asked Amy what that charge was and she said she knew nothing about it. Therefore I requested to speak on the phone and so far I have had no reply. Anyway just wanted to know have you heard anything like this happening before. Thank you I've been subscribed to your channel for months and I really appreciate all the info you bring.
That could be a charge Alibaba raises themselves. Have a look in my spreadsheet here as this fee seem to be similar to what I paid. bit.ly/3mFjE2y
Thanks!
Amy’s inbox is going to get slammed tomorrow haha
I’ve already put an order in
I don't want to encourage anyone to order these cells but you can always get a quote and consider your options 😁
Looks like you're going to need some more bus bars soon ;)
What was the delivery time from order to arrival this time? And did you end up having to pay any extra customs charges?
I got these ones with air freight, so it took less than 3 weeks.
Just a 12V battery so far, once I buy another 12 of these, I will need more busbars, for sure.
@@OffGridGarageAustralia How much for the air freight Amy quoted me like 400 slow boat to US
@@jamesharlow6603 I'll update the spreadsheet soon. Door to door freight was like US$160 for 4 cells.
They should have them ins stock in the US, she said.
There are plenty of boxes I want to ask about 😂 great video as always ❤️
Thanks Michael. Yeah, there is more to come 😂
Next week i am about to receive 8 cells from CATL rated at 302 Ah .. they should be pretty much the same as yours i hope!
I received 32 such batteries (CATL 302 Ah) a month ago from Shenzen Basen.Almost all the cells were a little swollen. I wrote to the seller about this and he replied that these types of cells are always, from the factory, a little swollen.Please write to me when you receive them and tell me how they are yours.
The Catl cells seem like Eve rejects, so Grade B or C cells. Maybe half of them bloated, and varying internal resistance. I have the 310Ah (which seem to have been downgraded). Worst thing is the welded fixed 6mm terminal screws, with 10mm dia. Bases, obscuring most of the terminal. The supplied bus bars are too short for any bloated cells. I have 8, only 2 connections still use the supplied bus bars (tripled). I bought longer heavy duty bus bars, and filed out the holes to fit 10mm, individually measured and fitted. Other supplied hardware was 8mm bolts and nuts!!
@@mihaitaiosub unfortunately they arrived swollen and with some minor damage to them. not sure if i should send them back or at least get some money back. What did you do?
@@dauerwerbesendung7045 The cells I received were really a bit swollen, but the physical appearance was perfect. I did a capacity test and I got an average of 310-315 Ah, I measured the internal resistance of each cell and I obtained values between 0.2 and 0.24 mohms, so I kept them, I built the battery bank and so far everything is fine. What is the name of the company where you bought from?
@@mihaitaiosub Shenzhen EEL
grade a cells a that price is a steal
Can you also do a short 1 minute discharge with 250A? Do they drop below 3.1v? (you dont have the EV grade?)
Hi Andy,
Thank you for all the valuable information you provide this community. I have just commissioned my 2, EVE 12 V 280 ah batteries on my boat. I am very please wth the performance so far. I will be purchasing 4 more cells to in order to have sufficient power reserves for the cloudy days.
I have a question regarding the advisability of adding a 304 ah battery or should I stick with the 280 version? Is it possible to have three 12 V batteries in parallel if they are not the same ah capacity?
Cheers
Kevin
You can parallel them but it's not advisable in that they will discharge at different rates and end up in uneven states of charge
Thanks, I thought that it was most likely not a good option. I appreciate the reply. Will stick with the 280’s.
I don't think that is correct. You can combine different capacities in parallel as much as you like. It is true that they will charge and discharge in different rates but this is by design. The cell with the larger capacity will always charge and discharger at a higher rate.
Thanks Andy, this is one of the reasons I watch your videos. They stimulate discussion and sharing of experiences and knowledge. I’ll explore both options with Amy. Cheers Kevin
I believe Andy is right (as usual), it can be problematic when you mix chemistries this way, but then Ive heard others tell how they have a mixed setup of lithium & AGM and they have worked fine for them for several years, & they believe they compliment each other in different ways because of the higher voltage lithium helps keep the AGM set at a higher SOC.
I have done similar things with lipo4 & AGM in a bus, but I dont leave it this way for too long generally, or whenI am away for extended periods, but Im sure you have this all sorted now & it works fine. Cheers
I got 8 of these cells from Shenzhen Basen, a little pricey but they were out of the 280ah ones. Mine have tested at about 320ah so pretty happy with them. I don’t have the test gear Andy has though.
Kieran, same as me, same supplier, same order, same changes. I received them one month ago and not yet tested, I'm very curious about, but I hope to have the same experience as you.
My test probably wasn’t the most accurate but it seems normal for them to all test over the rated capacity
Same. 16qty 304Ah from Basen. Took just over a month to ship ti Sydney and then they sat in Sydney for a month as Basen forgot to pay some logistics fee. Arrived 1st Sept. First 8 have been capacity tested. 321Ah highest so far, 309Ah lowest. Happy
@@philipmay9874 this is super good to know. Thanks. I'm on a boat in New Zealnd, so I have not all the same instruments that Andy have, but I'll do my best to test the capacity soon.
Thanks for your report.
Shenzhen Basen is not cheap, but always offer Grade A closely matched cells.
Hi Andy. How do you calculate 80% Dod and what will the voltage be on the cell. Regards
Andy can you also show the discharge curve of all batteries as a group in future videos?
This would require a BMS to disconnect and protect the pack when the weakest cell reaches 2.5V. And then there is really no way to tell how much there is energy left in the other cells. Such a test would be closer to real-world conditions, though.
I can do this for future videos and test. It just takes so long to do.
Great stuff. So what's the low voltage cut off please on the 280ah Eve cell?
As with all LiFePO4 cells, it's 2.5V. That the absolutely lowest voltage the cells can have without damaging them. There are variations with different chemistry, so please always follow the manufacturers recommendation for handling these cells.
I've got all the specs and data sheets on my website for these cells.
@@OffGridGarageAustralia Thx for reply Andy. That’s what I suspected. Keep up the good work. Educating us in a fun way. I’ve learned so much. Not confident though if honest to do all the testing and tinkering. I’m discovering electronics from you, David pix and will prowse in my old age, simply because I want a solar system in the future, and wanting to be as green as I can and nit give power company my hard earned pension when it comes. I never had any real passion for Electrics or batteries until I decided I want to get solar, so this is a steep learning curve for me. I’m in my 50’s.
Keep doing what you’re doing dear friend as I definitely enjoy your Channel the most. 🇬🇧🇯🇲
@@lennieadi That's is great, Lennie. Thanks for sharing. It's never too late to learn new things. We're in the same age class then 😁
thanks mate nice witch battery to use depending complete on the load
example i go to 500 volt x 300 amp = 150.000 watt i do not think this is a home use.
Hi Andy, thx for the video, I had been waiting to hear of a larger capacity cell. I have used your link to Alibaba & created a business account. Question. What cell & cert details need to be used ? Thx
Apologize for the newbie question, but I'm installing solar in a teardrop camper. Would these do well in that situation? I would probably only need 1.
Andy, I was unable to find the eve 304 amp hour 3.2 volt batteries price. Oh, with the manufacture you have described. I went to your link and it only let me to the eve 280 amp hour 3.2 volt pricing. Please help.
Pleas use the link in the description to get to the battery info with product links and prices: off-grid-garage.com/batteries/
Thank you Andy, my mistake. I was looking at the spreadsheet originally.
@@wideawaketotruth5301 No problem. A lot of locations to find information ;)
Great videos! Thanks so much for your expertise and knowledge.
My question: I can’t find the US distributor for the 304ah EVE battery in US from your link in video. How do I do this? I don’t want to Alibaba to purchase through. Thanks
I received 32 such cells (CATL 302 Ah) a month ago from Shenzen Basen.Almost all the cells were a little swollen. I wrote to the seller about this and he replied that these types of cells are always, from the factory, a little swollen.How are the cells you received?
Hi that's very interesting too see, I have finally received mine and two are quite swollen and two are not.
How did yours work out?
Thanks
@@welshnutterz All the cells works fine.
@@mihaitaiosub that's great because worried, so there capacity is good and they stay in Ballance? I don't have a internal resistance checker
@@welshnutterz Yes,everything are ok.
@@mihaitaiosub thank you
That is jaw dropping value, how much did shipping the 4 cost?
I paid nearly double for about half the capacity about 2 years ago.. As someone who relies on my batteries full time this is exciting, they are even very close to the same size so they will fit in the same space I have now and double my capacity to make my winter easier and maybe even able to run an aircon in summer :)
Have a look at the spreadsheet linked in the description. I keep track of all the costs there...
Message from the DIY forum: posted right after this video was published "Gone! Quoted me $115 US per 304ah battery, but said US stock went fast."
Thanks Gerald. So no US stock any more?
Hi from germany ;) One short question: You have define a cutoff current of only 2Ampere. As i show in the datasheet it should be 15,2A (0,05C). Why did you had set these value exactly? I'm testing my all new LF280K at the moment and i did not get the full 280Ah out there. Greetings!
The longer you stay on constant voltage, once constant current stops, the more energy your cell will absorb. But as current decreases close to zero, the additional Ah gained become unsignificant. I actually went down to 0.2A but realised that it's not worth my time considering the difference in Ah added.
How can you tell if the batteries are in stock for US warehouses? I'm going to email Amy soon, but just wondering if there is a way to check, or where you are getting that info?
Is there a way to get a shipping quote without signing up? Is it safe to deal with Alibaba?
I made a series of video about how to order, what to expect and what the costs are.
th-cam.com/video/21YY4HHdQYI/w-d-xo.html
th-cam.com/video/nlqmZbT1nM8/w-d-xo.html
1% is very significant for me as it's the amount of energy I need to make one cup of tea:) And the QR code is just both the numbers you can see on the label.
Hahaha, you need a bigger battery then for more tea 😂
Hallo Andy, schöne Grüße aus Deutschland. Du machst immer lustige und sehr informative Videos - wie auch dieses. Bin ein totaler Fan von Dir geworden. Durch Dich lerne ich noch nebenbei besser English, da Du Alles sehr deutlich und verständlich ausdrückst (ausdrückst, was für ein Wort). Ich habe seit dem Frühjahr eine kleine 48V Anlage mit 4 kW. Leider habe ich Deinen Kanal zu spät gefunden - mir wäre vieles erspart geblieben und es wäre weniger Elektronik in Rauch aufgegangen. Mach weiter so, ich freue mich schon auf die nächsten Videos. Liebe Grüße von der anderen Seite der Weltkugel von Mane (bayrisch)
Hey Mane, danke Dir vielmals fuer deine Email und Info. Was hast Du denn fuer einen Anlage, LiFePO4 Zellen? Wechselrichter?
@@OffGridGarageAustralia Hallo Andy, sorry. Ich schaue schon jahrelang TH-cam aber habe noch nie einen Kommentar hinterlassen und erst jetzt gesehen, dass du geantwortet hast. Freut mich echt. Angefangen habe ich mit einen 20W Panel vor ein paar Jahren, nur mein Handy über eine damals noch teure Power Bank betrieben. Habe im letztes Jahr mit Li-Ionen 18650 Zellen einen kleinen Akku in einen kleinen Koffer eingebaut und Handy und Tablet damit geladen 640Wh. Mit dem 20W Panel dauerte das Laden ewig.
Dann habe ich eine Solarplatte von meinem Neffen bekommen. 300W Garantietausch. Brachte nach 5 Monaten nur noch 2/3 Leistung. Der Solarteur sagte defekt - Garantie. Ich habe mir das Paneel geschnappt (2/3 - komisch) und 5 Minuten später den Fehler gefunden. In der Dose war ein Wackler und hatte über die Diode geleitet.
Nächstes Problem - Paneel 300W Akku 640W. Nächste Ausbaustufe geplant.
Da ich an dem billigen Wechselrichter bis 500W keine 4S anschließen konnte, zu viel Spannung, habe ich mit 32800 Zellen einen Akku zusammengelötet - reines Hobby, alles Try und Error. Die Anlage war ursprünglich für 12V geplant. 12P4S LiFePO4 mit 800 Wh und habe damit meinen Bürocomputer betrieben.
Dann ging es richtig los. 800Wh war mir zu wenig und habe Alles größer geplant. Auf 1000Wh erhöht und Rundzellen (damals noch ohne Zoll und MwSt.) in China bestellt und nach einem halben Jahr basteln bin ich seit einem Monat mit 15P16S 4000Wh und weitere zwei Solarplatten am Balkon 60 Grad Aufständerung online (900Wp). Wechselrichter Victron 3000 48V Inselbetrieb mit Umschaltung auf das Netz bei leerem Akku inkl. Victron BMV-700 und Cerbo. Betreibe momentan 2 Computer samt Tablets und Handy aufladen, eine Klimaanlage die die Hälfte des Akkus braucht und bin mehr als zufrieden damit (noch 😀) und habe in letzten Monat über 110 kWh eingespart, trotz eines schlechten Sommers.
Wow, jetzt hoffe ich, das das nicht zu viel Information war - aber Du hast ja gefragt.
Ich würde mich freuen von Dir zu hören, wenn nicht Du bist ja immer online.
LG aus Oberbayern Mane
I need to speak with Amy, but none of your links takes me to her. Help!
my 24 volt eve cell battery has been running without a BMS for three weeks now ,just an active balancer. every day the cells are perfectly matched . this never happened with a Daly smart BMS? What do you think Andy ?
yes i have the same problem! Any answers anyone?
That is the same size as my swollen 314/320 aH cells from Sanben.
Thank you so much Andy watch you all the time. I had just gotten a quote from Amy on eve 280 x 16 for like $2400 I tried to get her down to $2200 , she wouldn't budge. But hey at the price she quoted you for us guess what That right at $2200 hehe I'm going for the 304's I think. That should be the same price she quoted me for the 280's ( Go figure) tyty keep it up I've learned so much from your channel.
Is that USD or AUD out of curiosity?
All US$ as mentioned in the video.
@@OffGridGarageAustralia yes, i just was wondering if James was also quoting in USD. But i would guess yes.
@@MrDingaling007 Yes Sorry for that, These are my first post to youtube hahaha been here forever but posting noob :)
I watch on my Nvida shield and can't see or reply to comments on it
I wish you would have taken closeup video of the cells all put side by side. There have been several videos of people complaining that all cells above 300 Ah bulge. That is, that they normally bulge.
He included a shot with three side by side, these cells are not bloated. Any vendor that says that bloating is normal should not get your business.
I tested my Zke-tester and it shows 1,8 to 1,9% more Ah than in reality. Tested with other chargers/wattmeters which i trust. So i assume maybe same with yours 309Ah minus 2% is 303Ah which nearly fits the labels..,
And furthermore, if your repeat the tests you will have different results every time 🤷♂️
@@OffGridGarageAustralia Hmm - i need to test that! 🙃I love the coming winter time, enough time to play with the batteries!!
Where can I order these batteries from
Links are in the description!
Any chance you might test the new 310 AH CATL cells soon?
We just ordered a big batch. Hoping they are at least as good as the EVE cells.
I received 302 Ah CATL cells (they like to list them as 310Ah). They are all a bit bloated. :(
@@dauerwerbesendung7045 Who did you buy them from? Have you had a chance to do capacity tests?
@@JeremyAkersInAustin Alibaba Company Shenzhen EEL. I only have a Dali BMS that i could wire up, but i am not sure if i could get a precise capacity test like with a smart shunt and a single cell charger.
Hi Andy, thank you for your funny and informativ video about these new 304Ah cells. I want to assemble a 608Ah 12 V from 8 x 304 Ah. Which BMS from Daly should I use (200A)?
Thank you Haissam, that totally depends on your load. A 200A BMS will be able to push 2.4kW with a 12V system.
@@OffGridGarageAustralia Hi Andy, thank you for your reply. After I saw your videos I changed my mind. I am going to build a 24V battery and a 24/12V converter between battery an load. So, if my load is 2400 Watt @12V, how should my BMS be rated: 200A (2400/12) or 100A (2400/24)? Viele Grüsse aus der Schweiz 😉
I live in Thailand and I am wanting to build 48v battery pack please let me know more
Great video, thanks a lot. My battery graphs of LF280k batteries show different curves on different temperatures. Without trying to be a smart-ass: Maybe you should record temperature graphs as well?
Hi, Just curious, do you recieve a commision? If so what %? Full disclosure and all that! cheers
No commission, no. Just the affiliate links on the website.
Om about to buy 8 of these 304 ah eve now but of you have a 8s 24v whats the max current you can draw out from them? And whats the max current you can charge them with?
How long did they take to arrive? I’m in Victoria and ordered mine about 4 weeks ago, I’m eagerly awaiting there arrival…awesome vids keep up the great work
They arrived in less than 3 weeks. Took a week from Syd to Bris due to lockdowns though.
What kind of coasts are we looking at for shipping to AUS? I am looking to get 8 cells
@@LadAussie I guess, that's around $300 door to door for 8 cells. They will tell you exactly how much, when you get your quote.
@@OffGridGarageAustraliaThanks! So a few hundred less than aliexpress. Interested to here about the quality when you get them EverythingRC
Where can I get some of this cells pls?
Links are in the description!
Hi Andy, what company did you buy it from in Alibaba? Thanks very much.
He says their name several times in the video and has links to them on his website.
Hi friend, I want to ask you something, I am new to this and I have a 12v 280ah battery bank in series for my 48v inverter but I want to increase my backup, I want to buy 12 304ah lifepo4 eve cells to make a 48v 304ah bank, the question is if I can connect the two battery banks to the same bus bar?
Thanks!!
How can I buy same like that battery sir?
Hey Andy, where do you buy these lifepo4 batteries?
Did you not watch the video?
All links are in the description of the video: off-grid-garage.com/batteries/
what about the 280K batteries the LF280K?
with the balancer dont the last t wires have to be join to cancel out that bank ?
Not as per their wiring diagram. The last one just stays not connected for a 3s configuration.
@@OffGridGarageAustralia oh that's good to know
How much are these batteries ? can I just call QSO and order some.? do i have to pay shipping and import tax ? Thanks
Just tried my 1st battery with this tester and I did something very wrong??? I charged to 3.625 not much soak as this was the highest battery while balancing the pack with the JK bms let it sit about 12 hours and the tester currently shows 3.2v 35 amp discharge 129.66 cap and 417.60 energy going to stop at 2.8v Did I get crap batteries or did I do something wrong( hope it just I'm jumping the gun and the curve will just go) ???????
amazing battery and great review
I think the 304 is more worth it