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[Pre Order] 250A JBD Smart BMS with Bluetooth Dongle and Touchscreen $250 Delivered @ Muller Energy

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[Pre Order] 250A JBD Smart BMS with Bluetooth Dongle and Touchscreen $250 Delivered @ Muller Energy
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AssociatedRubenM on 23/06/2022 - 11:59 mullerenergy.com.au (2747 clicks)
Last edited 24/06/2022 - 00:12 by 2 other users

Okay, this will be a very niche product.

The preorder price for the BMS, the bluetooth dongle and the screen is $250, but we're looking at raising that price to $299 once they're here. Which is still very good compared to other Australian stock.

This is a custom BMS (battery management system) that we're getting JBD or Jiabaida to develop specifically for us. The highest capacity smart BMS they currently make is 200A, however we've got quite a few customers that want to run a 3000VA inverter and the 200A is just a bit small for that. That's why we're getting this 250A BMS made.

But we're also adding an output for an active balancer. One limitation of most BMS is that the balancing current tends to be quite low. And one limitation of active balancers is that they sometimes balance at the wrong time.
What we'll do is take the signal that is normally used on the JBD BMS to control the passive balancer and also make it so we can connect the soft-switch of the active balancer to it.
So then the active balancer will balance only exactly when you want it to.

They're expected to be ready late next month and the price includes shipping, GST and 12 month warranty.

If you want to learn more about this or lithium batteries in general, please see our Facebook group.

Mod: Removed vote solicitation

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closed Comments

  • BiG BoY on 23/06/2022 - 12:19
    +2

    Get stoked

    • AssociatedRubenM @ Muller Energy on 23/06/2022 - 16:08

      Thanks very much! The amount of upvotes are crazy!
      But I got a warning for soliciting upvotes, oops, that was not my intention! But at least the post didn't get pulled and the admin modified it instead, so I definitely appreciate that.

  • Leho on 23/06/2022 - 12:30

    wow really nice deal

    • AssociatedRubenM @ Muller Energy on 23/06/2022 - 16:10

      Thank you! It's reasonably close to cost price, but we had to order quite a large quantity to get this made, so I don't mind selling them at this price, as the primary reason we got them was actually so we can use them in future iterations of our batteries.

  • Elijha on 23/06/2022 - 12:38
    +8

    wish I even knew what this was used for (guessing solar to battery setups?)

    • AssociatedRubenM @ Muller Energy on 23/06/2022 - 16:13
      +2

      Haha, I guess not everyone is a battery nerd on here (or at least not a non-Eneloop battery nerd).
      It's a battery management system, it makes sure your lithium iron phosphate battery (in my opinion the best lithium chemistry as it's a very good balance of price, safety and specific capacity) cells don't overcharge, over-discharge, get too hot or too cold, etc.
      It's for people that want to build their own LiFePO4 batteries.

      • SomeoneAUS on 24/06/2022 - 01:00

        I feel I would love to build my own UPS style setup… I just have no idea where to start. Still have an upvote

  • Jimothy Wongingtons on 23/06/2022 - 12:42
    +6

    if I was to get 10 upvotes, I'd be stoked!

    i have no idea what this is but if u want updoots i'll + 1 ya

  • RockinIt on 23/06/2022 - 12:43

    Stoke it up!

  • pandawelch on 23/06/2022 - 12:50
    +15

    That moment when you want to buy something becasue it sounds like a good deal, but have no idea what it is or what it is used for!

    • AssociatedRubenM @ Muller Energy on 23/06/2022 - 16:15
      +1

      Cmon, you know you need this in your life! :D

  • scottm3 on 23/06/2022 - 12:52
    +1

    upvote time

  • iamreal2 on 23/06/2022 - 12:52
    +10

    For 250A on 12V, the wire needs to be 3AWG (dia. 5.77mm) for 1m… 4/0 AWG (dia. 11.53mm) for 4m… very costly on the wire itself. But probably short distance to inverter so cost should be managable.

    • AssociatedRubenM @ Muller Energy on 23/06/2022 - 16:19
      +3

      I like that you don't just say a cable size and recognise that it's dependent on the length (though I prefer metric cross sectional area, but whatever works), many people forget that. If I could, I'd upvote you.
      Whether you buy a battery or build a battery, you'd still need nearly the same length of wire though, the only thing you'd save is the short pieces that are inside the battery, which doesn't really add that much cost.
      I'm actually looking at making a kit with ring terminals and a short patch lead as well as an active balancer for these as well.

      • bamzero on 23/06/2022 - 16:55

        You sure can. If you're on mobile just hit those 3 dots to the right of the comment… otherwise the +/- should already be there.

        • AssociatedRubenM @ Muller Energy on 23/06/2022 - 17:09

          I'm pretty sure I can't because I'm associated with this deal. I can do it for deals other people post.

          • bamzero on 23/06/2022 - 17:21

            @RubenM: Ah gotcha.. shoulda known, now noticing "Member Since 11/08/2010" :D

  • eappel on 23/06/2022 - 13:07

    Hi Reuben :)

    • AssociatedRubenM @ Muller Energy on 23/06/2022 - 16:25

      Hi… you! ;)

  • stumo on 23/06/2022 - 13:08

    What is the balance current by default, ie. without the extra expense of an active balancer.

    • AssociatedRubenM @ Muller Energy on 23/06/2022 - 16:22

      150mA, so around 3% of what the active balancer does. Usually good enough if you don't pull high currents and use matched cells, but if you run a 3000VA inverter, an active balancer might not be a bad idea.

  • shabaka on 23/06/2022 - 13:17

    let's upvote the honest fella

    • AssociatedRubenM @ Muller Energy on 23/06/2022 - 16:25

      Thanks heaps!

  • 6828 on 23/06/2022 - 13:26

    Up voted because I'd like to make your day even better!

    • AssociatedRubenM @ Muller Energy on 23/06/2022 - 16:29

      Not quite 6828 upvotes, but way more than I expected, so yes, it's a very good day.

  • Toxic on 23/06/2022 - 13:41

    Not sure about this company and BMS, but if it does what they it does, the whole deal seems really good.

  • Username checks out on 23/06/2022 - 13:50

    Good deal, shame it doesn’t support series connection.

    • AssociatedRubenM @ Muller Energy on 23/06/2022 - 16:38
      +1

      Let me confirm for you.
      Personally, I'm not a big fan of series connections as you can't balance cells in battery #1 with cells in battery #2, but it might be possible to do series connection. As I understand it, it all depends on the voltage rating of the components, so if they're 60V+, it should be fine to connect up to 4 in series.

  • [Deactivated] on 23/06/2022 - 13:54

    Hey OP, please make one to replace the Bluetti EB70 factory BMS/screen

    • AssociatedRubenM @ Muller Energy on 23/06/2022 - 16:41

      That's a LiFePO4 battery, I would guess that it's 4s too (though you'd obviously have to confirm that), so it's likely compatible. But it probably won't fit size wise as the Bluetti will almost certainly have a smaller BMS (both in size and capacity).

  • Dsiee on 23/06/2022 - 14:14

    Any chance of a 16s 200a or 250a solid state Jbd Bms? I don't want the relay ones but need it for a 48v system.

    • AssociatedRubenM @ Muller Energy on 23/06/2022 - 16:46

      Unfortunately no. I don't think there's sufficient demand for us to get hundreds (there's a minimum order quantity) of units custom made for 48V. Sorry!
      I agree, I'm not a fan of relay ones either.

      • Dsiee on 23/06/2022 - 20:33

        Fair call, thanks for being up front!

  • NeverMissABargain on 23/06/2022 - 14:24

    I have no clues of what it is, but just to help you get stoked!

  • magic8ballgag on 23/06/2022 - 14:38

    If you want to learn more about this or lithium batteries in general, plea

    OP, are you okay??

    • AssociatedRubenM @ Muller Energy on 23/06/2022 - 16:47

      Mod edit, it seems. But thank you for asking, feeling better now!

  • lakers1222 on 23/06/2022 - 15:18

    I’m stoked and bought one. My wife saw the credit card notification and ask what I bought it for? Can anyone fill me in?

    • HunterBargainHunter on 23/06/2022 - 15:33
      +1

      Can’t go wrong with 90+ Ozbargain votes
      Darned if I knew what it’s for either.

    • AssociatedRubenM @ Muller Energy on 23/06/2022 - 16:48
      +1

      "Battery management stuff" is clearly the correct answer!

  • Synticulous on 23/06/2022 - 15:27

    Sometimes you just gotta swipe that card and not question the content.

    Y'know, because updoots.

    That day isn't today for me, but maybe it'll be the day for someone else, so here's my updoot.

  • Korban Dallas on 23/06/2022 - 15:43
    -1

    What has become of Ozbargain

  • canberrascooter on 23/06/2022 - 16:00
    -1

    what does it even do?

  • Eatslikeacat on 23/06/2022 - 16:48
    +1

    I feel like a caveman reading all that technobabble. It's all magic.

  • InternetExplorer on 23/06/2022 - 17:44

    Why not jk BMS with 2A active balancer built-in?

    • AssociatedRubenM @ Muller Energy on 23/06/2022 - 18:32

      Fair question.
      A couple of reasons: They don't make a 250A BMS either (but I could have approached them).
      While JK is probably similar in quality, JBD is far more well known, so it will be easier to sell them.
      Finally, 5A is usually what's recommended for fairly high capacity, high draw batteries.

  • [Deactivated] on 23/06/2022 - 17:52
    +1

    I'm giving this a +ve vote for the sheer excitement of it. I have as much use for it as an underwater clothes line.

    If that p*sses off "Top Deal" purists then that's a bonus. 😆

  • f0d on 23/06/2022 - 18:37

    upvoted
    great dude to deal with, the battery i got from you has been awesome
    i plan on getting a few more things but time money work etc etc

    • AssociatedRubenM @ Muller Energy on 23/06/2022 - 20:28
      +1

      Thanks mate!
      Life always seems to get in the way of everything, doesn't it? 🙂

  • [Deactivated] on 23/06/2022 - 20:14

    Is this a buy first ask question later product? lol

    BTW OP, when you say the LiFe batteries are rated for 3000+ charge cycles, are they full deep discharge cycles? Thanks.

    https://mullerenergy.com.au/product/eve-3-2v-280ah-lifepo4-p…

    • AssociatedRubenM @ Muller Energy on 23/06/2022 - 20:31

      Yes, full cycles down to 2.5V (0% SOC).

  • Phasor on 23/06/2022 - 23:12

    What's the benifits of this over the Daly? I have a Daly for a build but do like the idea of having potential to have the active balancer switched through it.

    • AssociatedRubenM @ Muller Energy on 24/06/2022 - 00:11
      +2

      Daly is a great BMS, especially if it's your first battery. Everything is nice and simply in the BMS app.

      The advantages I see in the JBD are the following:

      *Price! There's no way you'd get a 250A Daly BMS with a touchscreen from an Australian retailer (or even from a Chinese one) for that among of money.

      *There are a lot more settings in the app than in the Daly. Which for your first battery can be a disadvantage, but if you want more customisation, it's better.

      *Daly's SOC can be a bit finicky and I find the JBD one is a little better.

      "Smaller and lighter.

      *The discharge disable soft switch responds quicker and can be overridden in the app.

      *150mA balancing instead of 40mA (from memory, though this is a bit of a moot point with the active balancer).

      That's of the top of my head.

      Daly has some advantages over the JBD as well, such as being waterproof, but as a whole I'm starting to favour JBD more. That's not to say that Daly is a very good BMS though!

  • payless69 on 24/06/2022 - 08:48

    tnx OP, now the hunt is on to get the right cells!
    Then bye power company!

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