Testing the VW id3 battery module balance port, important to know before you buy any BMS to it.
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- Опубликовано: 6 окт 2024
- The balance current that i would like to have is 200mA to each cell.
But from what i have heard there will be a fuse inside of this module, one to every cell, and those fuses will by rated under 200mA current.
That will make it impossible to use this battery module together with a BMS that use 200 mA to balance the cells. I have tryed to find some real facts aboute this fuse with no luck, so i hade to make a real test of it and se what will happen. 
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Good test, thanks. I have just picked up a 62kw pack today. I am hoping to use it to power our house.
Thank you!
Good luck and be careful ⚠️⚡️⚠️
Good video, thanks! If a fuse is a blowed in this module it is doesn't mean it is a and of the battery. You can open up the front, and back, then a soldering any wires of BMS or balancer on the contacts of each battery element. I says by the experience. On the Internet you can find photos, and understand exactly where to cut the aluminum case. The depth of the cut is approximately 2mm. I also have an already opened body case, I can show photos
Thank you. I finally got my hands on a defective module and I plan to open it up to learn more about them. Thanks for the information 👍🏻
@@flyingtools When you start to cut the case, focus on the seam that was made at the factory
@@SalarColor yes, that’s the plan.😊👍🏻
Thank you very much for this video!! I bought some similar LG chem 4S modules (volvo XC40) from EV breakers and one of then has no voltage on cell 3. I can see all other cell voltages so I think this fuse you talk about must have gone on this particular cell. Very frustrating! The construction of mine is exactly the same so I would be very interested to see how you get inside these modules, but even if it is possible I doubt it will be repairable to use in an EV conversion stacked with other good modules.
@@olivertrotter Hi and thank you. 😃
I opened up one end (the connector side) yesterday, and to my surprise there was no fuse, but the ribbon cable is very very tiny so I guess that it can act as a fuse. I had tried to open the ends of the module an repair it. But first, discharge the module to the lowest discharge voltage if something should go wrong.
Thank you for that great video. Does anybody know which temperature sensors are used inside the pack? I mean which alpha or beta value the 10k sensors have. Many Thanks!
Thank you for this test.
But where did you read about that fuse? I'm curious...
I cant tell exactly where because I looked at so many forums in my search of a suitable BMS for a high voltage battery. Then I decided to make this test so I really know. But the important thing is that it can handle 200mA😉 And right now I have a long test going on at 200mA.
Thanks for your comment ☺️
very exciting video, almost like a thriller 😅👍
but 175mA is already a very small fuse, surprisingly small for these purposes 🤔
Hahaha, tanks😂
Yes i totaly agree with you. But there is so many guessing people out there… In the future I will open one module up
(if I find a defective one) and take a closer look at those tiny fuses.
But now I at least can start to wire 108 cells to my balance leads and be sure that it can handel my BMS 200mA balance current☺️
Thanks for your comment ☺️
Where did you purchase the complete battery from ?
Did it had all capacity, arhhh... Just remembering that you aren't using the full voltage range to protect it from over and under voltage.
Maybe you have an idea if you hav the full capacity.
Great video and happy new year 😊👍💪
Hi!
You can buy it from here:
www.secondlife-evbatteries.com/products/vw-id3-6-85kwh-44v-156ah
Thank you so much and a happy new year ✨😊
I believe ter is a misunderstanding regarding to lithium battery. In general the cells doesn't drift.
Then again yes the do drift, but not that much.
So is it important, NO
Because they always come back fro the point were they started.
That is the reason that les the 200mA is enough.
The only thing that is required is the cels is cycled and is balanced out at the end, so when the battery is amassable all cells is balanced out.
That makes less the 200mA more the sufficient.
I startede working with lifepo4 battery in year 2010 and have worked with this cells until now, and all cels have been at 165 Ah to 180 Ah
Winston, Thunder Sky, Calbe and for destructive test A 123 small cells was used.
Last battery i made was 114 Kwh @ 700 Vdc.
The best information out there is Jeff Dahn, a video 1:13.29
If you don't agree with me, please finde the video on RUclips :
Why do Li-ion Batteries die ? and how to improve the situation?
Yes it is olde one, but battery haven't change that much trug time.
Only density and size, done with different anode martial and difrent Chemical used for the electrolyte down to the whole "kitchen sink"
Please enlighten yourself by seeing the video.
To my recollection, Jeff is the only one external consultant that is hired in battery research program with Tesla, they even called the group "Dahn".
Please bear with me for small translation mistakes since I am on sick leave and I find it extremely hard to concentrate. But I had to say something 😊
Wow, you really now stuff about battery’s, thank you for all that information and I agree with you on everything. I have now looked on the video and it was really interesting and learning, I think I have to look at it again. Really interesting that it is the time of charge that damages the cells at higher temperatures, I most say that I thought it was worse to charge it fast then slow under that circumstances.
Again very interesting and giving!! Hope you get well soon.
(I am very concentrated but I know my grammar and spelling are way of sometimes anyway😅)
Really wish that you get well soon and a huge thank for your comment😃👌🏻👍🏻
Spännande!! Satt som på nålar! Men skönt att det funkade, så vad är din gissning att säkringen är på då? 😉 God Jul och Gott nytt år!!
Jag tror det är i närheten av 400mA. Kommer ta reda på det mer exakt nån gång framöver😉
Önskar dig det samma🎅🏻
Hi, are you sure they're inside the fuse? If there was an interruption, the whole module is gone, I don't think so.
Have a nice Christmas to Sweden.
Yes I know, that’s crazy! Even my e-up battery has built in fuses in the module. But there you have access to the cells so it will be an easy fix. If I can find a bad module I will make a new video when I open it up for you guys ☺️
I which you the same 🎄🎅🏻
How did you test the balance current? Did you set the charger to discharge one connected cell?
Hi. I just had a small pack with 18650 batteries, and one cell was higher then the rest of the pack. Then I just had my multimeter in series with that cells balance lead.
Thanks for your question.
Thanks Man!! I set up a JK-BMS to 0,3A balancing current in 12S modules and they are working perfectly for months now!
Now i have put together 2 x 8S modules with the same BMS settings and i have one cell in one block wich has a drift of 0,4V in the lowest SOC, i put a few cycles thrue this setup and could not improve the drift... at top SOC all cells have 4,1V and that one cells stays at 3,9, thesmalest difference is 0,2V than.
Do you think i can try to charge that one cell like you did in this video? Will it stay and follw the rest of the cells than?
Thanks for your clear Videos!!
Hi!
Yes you can. It will take time… But it sounds like you have a cell that is bad. That is not good if so. If your BMS cant keep up with the balancing, you should change that module out.
I am looking for the bms you used in this video. I have an e-golf battery module and I don't want to damage it when charging.
You Will find more about it in this video ruclips.net/video/kbPQ2FrUCR8/видео.html and also a link in the description.
Thanks for watching😊
Awesome video. What is the name of connector that plugs into the battery? Also is this 6.85kwh ?
Thanks😃 you will find the part number here in this video at 4,45
ruclips.net/video/hKKdrE_1TJY/видео.html
I read this fuse is 750mA
My JK is balancing current is 0,6A
Have it working for a month with no issues
It started to get really hot at 800mA and the solder melted around he fuse at 1A I maby will do a video about that in the future.
I'm also planning on using a JK bms, can you confirm that your battery is still fine with the 0.6A balancing current?
I didnt want to test that much so my balancing current is 400 or 500mA
In any case there is almost no much sense of balancing. Good balanced battery with same cell resistances will not unbalance at all
Li ion is not LIFe and no need of large balance currents
As far as I know these fuses are 750mA
Wow, that’s great info if so. As soon as I have the chance I will open a module up and try to confirm it. Have a great day and a HAPPY NEW YEAR😃
@@flyingtools Batteries can be taken apart using an angle grinder. All you need to do is punch. You can always pull off the flaps. And connect the balancer directly under the modules.
@@awerskto That is my plan, as soon as i have a module to spare i will open it up.
@@flyingtools If you want to ditch the battery cells then use Isopropyl alcohol, preferably as a cleaner in a spay
Hey hallo Nice video, where did you find the pinout for the 22pin and do you have it for the 8s3p 29v? Do you have on all your modules a daly Bms? Is it possible To have them all together in 1 app? Is there an other way to contact you.
Hi, thank you.
I figured the pin-out out my self.
I do not have it for the 8s yet.
1 module one 12s bms or 2 modules and one 24s bms. No one in serie.
One at the time in the app.
thanks for the response, i have the choice 12s or 8s module. which one would you choose? I also watched the video with the growatt what is the disadvantage of this inverter? how many module 12s could this handle in parallel? or still advice solax and modules in series
Do you work as a vw mechanic?
Im a hv expert vw mechanic. If you our also can we have contact? 😀
How much does it cost you to buy the VW ID3 Battery?
It depends on from witch junkyard you buy from. I negotiated about the price.
But it was easier a year back than it is now.
HI, i would like to use an VW Battery module and the Daly BMS system to use it as an additional battery for my fronius photovoltaic system - i am not electrician, so i would need to know how to install the thing and were to connect it to the Fronius Gen 24 or Fronius 3.7.3.M can you help me out here?
Hi. I’m sorry, but I don’t think that that type of inverter support either that kind of BMS or that voltage that those battery modules holds. But in this video, you can see how I connect to be a must to this Batteri module. Hope it helps.
Is it correct that if I connect the bms that you have in this video I can check is one of the small fuses in the module is blown? Before I buy a second hand module 🙂
Hi, yes thats correct. You also have to check the balance at the same time. More than 0,020v unbalance between 3,3v to 3,85v is a warning sign that you have a drift in that cell. Good luck with your project😊
i see you use a 12s 48v bms link where did you buy it?
Hi.
I have a little more info about it in this video.
Capacity test VW id3 id4 battery module
ruclips.net/video/XS257c3Jp6c/видео.html
And I bought it from AliExpress.
Balance current: 45mA when I tested that.
SEK 469.88 32％ Off | Daly BMS Smart 16s 48V 18650 Battery Li-ion LiFePo4 4S 3S 7S 8S 10S 12S 13S 16S 20S 24S12V 36V 30A 60A 80A 100A 120A 150A 200A
star.aliexpress.com/share/share.htm?image=A38f1584185f74fb0822417ad9f6a84beL.jpg&businessType=ProductDetail&title=SEK%20469.88%20%2032%EF%BC%85%20Off%20%7C%20Daly%20BMS%20Smart%2016s%2048V%2018650%20Battery%20Li-ion%20LiFePo4%20%204S%203S%207S%208S%2010S%2012S%2013S%2016S%2020S%2024S12V%2036V%2030A%2060A%2080A%20100A%20120A%20150A%20200A&platform=AE&redirectUrl=https%3A%2F%2Fwww.aliexpress.com%2Fitem%2F1005002811248870.html%3F%26srcSns%3Dsns_Copy%26tid%3Dwhite_backgroup_101%26mb%3DQDvJmB7yNDkwB5z%26businessType%3DProductDetail%26spreadType%3DsocialShareu
ich habe ein gebrauchtes Cupra Born Modul und da ein JK BMS angeschlossen. Leider kann man das nur auf 300mA Balance Strom runter regeln. Es zeigt mir aber auch an dass ich einen Widerstand von ca. 0,420mOhm in den Leitungen habe. Das sind wohl die 175mA Sicherungen die im Modul verbaut sind? Frage: Kann ich das mit den 300mA Balance-Strom betreiben?
It’s in the higher end. I think it will work. But due to the voltage drop in the cables it’s also depends on how the bms is working. I balanced my modules with 200mA without any issues.
The jk BMS 0,6 amps has lowest setting at 0,3amps balancing :( any ideas which BMS to bye for a 12s 45v config? model part number would be nice
Se my answer in your latest comment.
😊
I balancing such battery with jk and 0,6A no problem
Yes👍🔋 ⚡🔌💡
Thanks, happy new year 🥳
For such a huge pack I do not know what for example 125 mA balancing current can do, it will balance this pack forever =)))
Yes I know what you mean, that was my first thoughts to, but those battery packs do not drift at all (almost)
My pack that I used daily now for 6 month has a delta at only 8mV over 108 cells. So in a matched pack with healthy cells that small current will be enough.
@@flyingtools I've bought 2 modules for Renault (same factory make modules for VW) and I hope they won't drift either, but I will put a Ji Kong BMSes on them anyway as I need to teardown the modules and add one more cell in series to get my 48v invertor running smoothly
I can t paste picture, but hold 0,435 A. Really.
Hi!
Do you mean that it holds up to 0,435A?
@@flyingtools yes .
It holds 0,6A