All right, hey, a little video today I Just got back from vacation and uh, by the way, I uploaded a video. If you want to go see it, it's okay. uh, if you don't, it's also okay. I Realize that most of you guys just want to watch videos about batteries these days in my channel, right? but I it was a time where I used to upload other stuff than batteries stuff.

But today I want to do one quick video about a battery because I'm starting to see a little problem I think and I don't get where what the problem is so maybe you guys can help me? Let me show you. so the battery in question is this 12 volt 100 amp hour lithium iron phosphate batteries that we sell on our website. Several I mean less than five, but more than three or some something like that. Um, clients customers have reported that they can install the BMS board.

The BMS board goes right on top of here. Boom! It goes installed there and then you installed the actual BMS part in here. So it's just kind of like an adapter and it's a quick, easy way to install a BMS a 200 amp BMS into this battery. Right now, you don't have to do that.

You could also do other ways. There's this little connector here that allows you and it's labeled and allows you to take out those wires, the balance wires, and then just install your own VMS outside of this box if you're doing a big battery system like many of you are doing. by the way, but in this case the clock, the customers that are uh reporting that these are they don't align that these uh standoffs. You see how the standoffs are there.

This is just the the board that goes on top here is the same version. This hasn't changed. Uh, there was five iterations right? because it's 1.5 So I start with the one o and then so there was changes. you know we were trying to do.

but as far I did mess with the dimensions in the early days. Uh, but see how some of these are elongated and some of these are like, you know, round? uh but I Kind of explained that the elongated ones are just for so that it's easier for us to install it. and then whenever we were installing uh, a standoff here to to transfer the current then those would be more round like that so that we can maximize the amount of surface area because these have to carry. you know, the 200 amps up on the thing right now.

these are solid brass uh stand ups and they carry quite a bit of current. Each one would carry about 100 amps. Um, they get warm but they don't get too hot and so that's why we're trying to maximize the amount of surface area because it's it's quite a bit small, but you know it could carry. So anyways, people are saying and this is our current uh BMS adapter board and they're saying that it doesn't line up and they're saying only one customers that just sent a picture and it sure does seem like it's not lining up here and it's way off I think on the picture shows it something like that.

but uh, and the fact that there's others, not just the one. It's kind of starting to worry me. but I don't get why that would be. Um, these boards were drawn from basically the same dimensions.
once I figure out these Dimensions I just transfer those Dimensions up here and then I made the boards and then I did the the layout the way it needed to be. So these Dimensions have to match. Now it's possible that the uh, the the PCB you know shop the ones that prints these. You know sometimes they make mistakes and then maybe they make the whole one of these holes in the wrong place.

Um, it is possible, but we haven't. We don't have any version like that. I'm looking at the ones that we have here and they all match. You know they don't match perfectly, but there's a little bit of play on where these um stand-ups go because of the land.

I Don't get it holds right so I mean, but they all match. This is good enough to put in there now. Customers are saying that they they're so off they can't even install them and so I don't know how to help you because I don't know where the problem is uh I think we asked One customer to send it in their battery and their board because we want to see because I think what's happening well I don't know what's I thought maybe what they did is they would put it on here and then they would like. you know, uh tighten the screw and maybe it was like all the way to the one side and then you know there was a little bit of give.

but I mean even that. like even if it's on the one side it's a little bit off but not that much. All you have to do is just so I was gonna suggest like okay, put all the screws loose and then once all the screws are there then you time. but I don't know that seems like that's not gonna do it in this particular reason.

So uh, case right? So I think as as I think the only thing that we can do is kind of wait until we get that battery and that board and then see what the problem is. but if you're building one of these, there's so many of you because it's resolved quite a bit of these. um and you're having problems, do let us know, send us an email and see what. uh so we can see what's We'll find out what's going on because uh yeah.

I'm kind of puzzled with this. Um also there is a way that this goes, but not really. You could install this the other way. So these are two batteries put together.

These are these cells are 50 amp hours. So what we ended up doing is we just flip a 50 amp hour 4S and then we just flipped it around the other way. So this is mirror here. That's why these two here are positives.

and then these two here are negatives, right? So these Dimensions should be. They're mirrored. They should be the same. So in essence, um, the only reason why this is the right way to do it is because there is this connector that goes right there and it's just basically you put this little ribbon connector that goes in here and it goes right on top and it latches onto that right now.
You could potentially have this this way here, but even if that was the case, the the dimensions will match because like I said, these are mirror and you can tell here that they would match. Now of course the the you'd have to move these because now we're using this one to carry the current up. not this one. Uh, this one will be the same.

This one is the same thing you. You move it from here to there. Uh and this one. Yeah, you remove this one from here and put it on here.

Now this one doesn't carry the current. This was just to add support because these are where the main two um terminals we're at and stuff. so. But the point is here is that even if you had installed these backwards, um, you could put the the ribbon board and then run it around here and then install it here.

You know it works and electrically it would work, but in the dimensions would work. So I don't know where the problem is at? That's where I'm getting at. So if you know if you have one of these and you have a similar problem, let us know. maybe someone out there already figured this out and uh, it's staring right in front of me.

but I don't see it. Uh, and you could help me out here. Other than that, uh, these are a Jack35.com if you need Lithium iron phosphate. We usually get these every month, but this month we haven't So I don't know if we're gonna get more or not.

That's the nature of uh, you know, second life battery sources and you know stuff. It's like sometimes it's ongoing forever or sometimes it's just one batch and so I We'd never know if we're getting more of these, but right now we have a few of these. Probably like a hundred left of these in there, but after that they might, that might be it. I Don't know, hopefully not.

Hopefully we keep getting these because these are great batteries. Uh, so if you want to check them out, there you go. Uh, if you have one already and you have problems, let us know maybe you can help us out. If not, Uh I have some other videos coming up this uh week and so stay tuned for those.

It's going to be about batteries. Finally I think I have a solution for these. It's not the greatest solution, but it is a solution. Uh, it requires us to change the BMS because I haven't found a way to hack this BMS it requires a software hack and I'm too dumb to come up with the hack.

All I could do is you know, usually copy it from somewhere else. So but I think I'm going to show you one way that we can do that. Also another way we can do is combine two of these and make them 72 volts because then that becomes you know kind of more appealing. For for customers that want like a 72 volt battery this would be super cheap and stuff like that.

So those videos are coming up. we're also gonna I'm gonna finalize and then the the Sonata ones. and then there's the E-bike battery here too. So we have a few videos coming up.
Stay tuned for those as always. Thank you for watching and we'll see you guys in the next video. Bye man! I Love this country! Everything is like that around here.

13 thoughts on “12v lifepo4 bms alignment issue”
  1. Avataaar/Circle Created with python_avatars Charles D says:

    @jehugarcia I recently saw a video of yours that had a link to your store where you were selling a Bafang front hub motor for $40.00. I'm sorry I didn't see it at the time you had it available (I only recently have gotten interested in DIY ebike). Having VERY difficult time trying to locate other sellers of secondhand front hub motor, keep getting sent to ebay/amazon despite different wording used such as reseller, recycler, etc. Can you please give me any list of links to sellers of low cost secondhand hubs? Thank you in advance (already tried BatteryHookUp per your video).

  2. Avataaar/Circle Created with python_avatars futuristics inmotion says:

    Just wanted to say the charging finally worked!!! 🎉🎉🎉 thanks

  3. Avataaar/Circle Created with python_avatars Jamar says:

    I had the same problem. I just installed all the standoff loose. Then the BMS, and all the screws fit.

  4. Avataaar/Circle Created with python_avatars TecSanento says:

    Maybe the lower board is bend a little during the attachment process

  5. Avataaar/Circle Created with python_avatars Dan Murphy says:

    I just realized, your like one of the only people from Satan's An(u)s that I realy like 👍.
    Hope your surviving in that pin of despair that the real world calls California.

    Peace Out ✌️

  6. Avataaar/Circle Created with python_avatars acoucou batteries says:

    Hello, we are Acoucou Battery. Really enjoyed your video and have to admire your professionalism. So we would like to invite you to test our LiFePO4 battery and look forward to getting your reply.

  7. Avataaar/Circle Created with python_avatars DryUrEyesMate says:

    Why you don't simply replace the defective boards baffles me. As you mentioned, the problem has only been reported on 5 boards so far. I find it shocking that you keep paying supporters waiting without offering a solution; in my opinion, this is poor customer service, which is probably why I don't buy from you YouTubers.

  8. Avataaar/Circle Created with python_avatars OffGrid Aussie Prepper™ says:

    wheres the link to ur traveling video???

  9. Avataaar/Circle Created with python_avatars Crane bird says:

    It might be help us if you show clients' photos with adapter issue.

  10. Avataaar/Circle Created with python_avatars Ruben Lujano says:

    Lol it was mine.
    It's the bsm black board the positive aux and the slot by 200a bs lable was really off
    Tried it on both batteries and confirmed ot the black board. I drilled the aux positive hole a bit bigger like 3 sizes and the other one two sizes. To fit

  11. Avataaar/Circle Created with python_avatars Daniel McGee says:

    I'm obviously not trying to get ahead of your video or videos of the cheap scooter batteries but of what you have found out so far the signal
    Do you know if it is voltage related or frequency related

  12. Avataaar/Circle Created with python_avatars David Flores says:

    Here from Chicago
    Nice to see you trying to make the 72volt battery’s
    work!!! DIY ebike community will like that!!

  13. Avataaar/Circle Created with python_avatars Dusty Tillery says:

    I bought 4 of them, all 4 had this issue. I was able to attach all but one stand-off. I loosened them all up and was able to make it work. I am local to SoCal, I might be able to drop by with them and let you see.

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