Build your own solar battery, fast and cheap!

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  • Опубліковано 14 січ 2025

КОМЕНТАРІ • 358

  • @ThaiLifeAmerican
    @ThaiLifeAmerican Рік тому +4

    This is the ONLY channel that TEACHES me stuff! I sell solar(used to install) and I didnt realize how much i didnt know!

  • @stevedutcher3875
    @stevedutcher3875 Рік тому +27

    David, I purchased 4 of these modules, I only did a capacity test on one battery only and got 294 Ah. These are a incredible buy, I am using a smart Daly 16S 150 amp hour BMS’s on each two modules! All batteries were top balanced individually to 3.45 volt down to 2 amps with my Ztech 40 amp chargers. Yes, I did use your discount code, thanks!!

  • @antronx7
    @antronx7 Рік тому +5

    Nice. Proper capacity test makes me hit the like button.

  • @thespencerowen
    @thespencerowen Рік тому +2

    Wow what a great system. This is the cheapest system that I feel confident won't blow up my house. Thanks for sharing.

    • @powerwall
      @powerwall Рік тому

      This is a much better option for DIY 18650

  • @thefirstmissinglink
    @thefirstmissinglink Рік тому +37

    Bed frames seem to turn up in my life regularly. Chop saw and a cheap welder builds me all kinds of racks and mainframes.

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому +3

      I've used bedframes on some projects. I remember once not being able to drill through it. Have you ran into that?

    • @thefirstmissinglink
      @thefirstmissinglink Рік тому +3

      @@DavidPozEnergy yeah it is hardened. An option is the carbide bits for concrete will work.

    • @jws3925
      @jws3925 Рік тому +1

      @@DavidPozEnergy I used to pickup bed frames from along side the road and thought I'd use it for non critical projects in place of expensive angle. Well, I found out the same as you. You can't hardly drill thru them and try driving a self tapping screw into them. Not happening. I quit picking them up and rarely use the for anything now.
      I wonder what they did in the process of making them that made them so hard?

    • @vernt4583
      @vernt4583 Рік тому

      @@jws3925 high grade steel and properly annealed- heat treatment

    • @jerbear7952
      @jerbear7952 Рік тому +2

      I end up with bedframes too. And aluminum ladders. Its a universal constant for me.

  • @AveRage_Joe
    @AveRage_Joe Рік тому +21

    Not bad of a price for 14kWh!! I like the way that plastic tray holds the wires nice and neat!👍

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому +1

      Yeah, that was a nice little bonus.

    • @terrya6486
      @terrya6486 Рік тому

      Clean simple and at a reasonable price 👌

    • @powerwall
      @powerwall Рік тому +1

      Looks like the setup is pretty easy.

  • @vandela177
    @vandela177 Рік тому +2

    Fantastic!!

  • @urbanbeeman5402
    @urbanbeeman5402 Рік тому +2

    Sweet good vid David

  • @loucinci3922
    @loucinci3922 Рік тому +2

    Very good capacity for used cells. Nice build

  • @offgridwanabe
    @offgridwanabe Рік тому +1

    Nice looking DIY

  • @clarencewiles963
    @clarencewiles963 Рік тому +4

    I’ve been passing to everyone. With the weight of batteries 🔋 and wall mounted hardware. Getting a engine lift to help pickup and install to he wall will save your back. The Engine Lifts are mounted on wheels and has good reach with weight abilities. And you do some heavy lifting. Thanks again for your posts.

  • @fredflintstone1428
    @fredflintstone1428 Рік тому +9

    Brilliant video. What a shame there isn't something comparable in the UK.

    • @powerwall
      @powerwall Рік тому

      Orient Power Powerwall battery is available in stock in UK.

  • @chasmarischen4459
    @chasmarischen4459 Рік тому +1

    Good video!

  • @trickyynicky
    @trickyynicky Рік тому +5

    Link to batteries is broken

  • @yachtsteve
    @yachtsteve Рік тому +2

    I think that's a pretty good price, plus I like the fact that the batteries have fairly robust protection

  • @KevinGebo
    @KevinGebo Рік тому +4

    Nice work David! Good idea to ask Orient Power to sell the "DIY BMS"!

    • @AGhostInTheMachine
      @AGhostInTheMachine Рік тому +1

      yeah, that is pretty cool

    • @powerwall
      @powerwall Рік тому

      It is our pleasure to bring new products as per market & clients requirement.

    • @powerwall
      @powerwall Рік тому

      @@AGhostInTheMachine thanks

  • @robjohnston8632
    @robjohnston8632 Рік тому +3

    These modules look amazing and the only negative I can see is we didn’t get to see you build “stuff”, they were almost plug and play. No welding, cutting, soldering or measuring - just adding 6” of wire. That’s what I love about your channel - David Poz builds “$hit”!!! Thanks for showing these cells and I may expand my off grid system.

  • @jaspermachnik
    @jaspermachnik Рік тому +2

    Thanks man, 514!!

  • @007slyman
    @007slyman Рік тому

    Hi David from Australia, we enjoy you sharing your knowledge and equipment. Bummer we cant get this in Aust. I'd purchase straight away. Thx anyway will continue watching you vids

  • @seanathanq
    @seanathanq Рік тому +3

    love the videos, i wanted to get one of those packs just cant justify the shipping for only one battery, and cant afford more than one hahah, but i can live vicariously through you

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому +1

      Individual cells can be shipped in smaller boxes, saving money on shipping. That would probably be a better choice if you are making a single 24V battery.

    • @craighansen7594
      @craighansen7594 Рік тому +2

      I am trying to catch up on how to utilize the lithium batteries. I am still assembling some solar panels from individual cells I purchased year ago. They are intended to go with a small camper trailer. The way I'm approaching the shipping cost problem is getting friends interested in doing this as a joint venture.

  • @brianimpellizzeri325
    @brianimpellizzeri325 Рік тому +2

    I would buy a 24v diy BMS if they had it available. I bought three modules thanks for the info.

  • @jimthvac100
    @jimthvac100 9 місяців тому +2

    You inspired me to purchase two of Battery Hook up's Gotion 16s 51.2v 240ah 12.3kWh Lifepo4 Battery's. comes out to about 130 a kw hour when you factor in purchase of the BMS, tax, and shipping. (not counting a breaker or a disconnect.) Still waiting on them to arrive.

  • @petersamios5409
    @petersamios5409 Місяць тому

    Nice presentation. I'd recommend beefier connections to your batteries. With the amperages you are pushing they seem a little light.

  • @WattsMiner
    @WattsMiner Рік тому +1

    I just purchased 8 of these modules and 4 jbd 300amp smart bms from them and since im 30 min outside philly I drove my 3500 and just picked them up. Amazing savings for 1120ah 😮

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому

      Good deal. An hour trip is worth the savings in shipping for sure.

    • @Scat.original
      @Scat.original Рік тому

      I have emailed them about that BMS to see what Inverters it support but didn't get a reply.
      What inverter are you goint to use with that bms?
      Thanks

  • @Ken-wu2bf
    @Ken-wu2bf Рік тому +1

    Thanks for the great videos David! I picked one of these up a couple of weeks ago

    • @powerwall
      @powerwall Рік тому +1

      great, share us the experience once installation finished.

  • @newagetemplar6100
    @newagetemplar6100 Рік тому

    Nice wiring on the cells , what a nice setup .🇬🇧👍

  • @GiC7
    @GiC7 Рік тому

    Thanks

  • @purelyinvinciblellc
    @purelyinvinciblellc 11 місяців тому

    First off, you are strong as can an ox! I thought I was going to just pick these batteries up like you were holding it at the beginning of the video.... My back is very upset right now lol. They didn't have any of these packs as you bought them, the only option was the auction pallets. I bought some and one module had a bad cell. I figured it was no big deal, I'll find a way to take off the welded terminal and put a new one in. That was short-lived. I was able to cut and pop off the terminal so I started to unscrew the bolts but found there were rivets on the bottom so I drilled them out. I then found that the top and bottoms are also welded. It's impossible to get these out lol. I am thinking of just setting a cell on the side and connecting it 😂 I have 8 of these modules so I have some work to do! Some of them just have the welded terminals broken so I will have to drill in the cell and put a helicoil but we will see how that goes.

    • @DavidPozEnergy
      @DavidPozEnergy  11 місяців тому

      If these are going in a stationary application (like I'm using), then I suspect one cell on the side isn't going to make or break your build. Keep to what's easy for you. Thanks for sharing your experience.

    • @purelyinvinciblellc
      @purelyinvinciblellc 11 місяців тому +1

      Here’s an update. I opened the module finally and I went to helicoil one of the cells. I researched that they are 6-7mm depth. I went to 5mm and went thru. I went to do another and couldn’t get enough threads even after cutting off the taper. Tried another one a little deeper and went through. I think I’m just going to replace with studded cells.

    • @purelyinvinciblellc
      @purelyinvinciblellc 11 місяців тому

      is there any harm in using existing balance wires and tying them to the BMS harness? I ended up drilling through 3 cells and stripped 2 because it was too shallow to grab. I accidently popped 2 welded terminals off while trying to open the case so I will have to replace those too.
      @@DavidPozEnergy

    • @DavidPozEnergy
      @DavidPozEnergy  11 місяців тому

      I re-use existing BMS wires all the time for my new BMS. I'll point out something that is probably obvious, but here goes: BMS wires are thin, and can't carry the full current of the cell. Don't try to use the BMS wires as power wires.

    • @purelyinvinciblellc
      @purelyinvinciblellc 10 місяців тому

      @@DavidPozEnergy Ive got them wired up to a sweet busbar. Last question (i think) is there any way to reweld broken welds or any links you know of to do this? Trying to drill the holes has not worked and ive tko'd a few I believe that welded cells have a shallow avalible depth compared to naturally studded cells.

  • @twigandroot
    @twigandroot Рік тому

    awesome work David! this set up is so impressive

  • @northidahodreaming5657
    @northidahodreaming5657 Рік тому +2

    well done! thanks for sharing this

  • @majidjan3990
    @majidjan3990 Рік тому

    Wo great battery

  • @coryr6359
    @coryr6359 10 місяців тому +1

    really great, informative content. thank you.

  • @mattgirgenti3595
    @mattgirgenti3595 Рік тому +4

    very nice!! and thank you for doing cost #2 'or 'full rack'. My first question while watching was "how many units can ship on a pallet?", which you answered. The 7 unit build is bigger than I need, but cheaper than my original plan. Very intriguing and seems more than worth it. I just need to decide on BMS size/type. Very helpful - thank you!!

  • @korishan
    @korishan Рік тому

    I just ordered some of the SPIM08HP cells and hardware for making a battery for my UPS (not quite set up for house inverter yet) that runs my server rack and livingroom. I used your promo code, of course 😉
    So now just waiting for them to pull the order and ship so I can get that online soon

  • @Roll2Videos
    @Roll2Videos Рік тому

    Wow! That is amazing, Thanks Dave 👍

  • @Lana_Warwick
    @Lana_Warwick Рік тому

    Guess it makes sense to rack panel makers to place the display, switch, etc, inline with where cables, solid busbar runs. Perhaps that would be a good suggestion to them. Now to check out cost to Au.

  • @ToddDesiato
    @ToddDesiato Рік тому +6

    The problem is that the NEC 2020 and beyond are requiring that ESS be "Listed" or field inspected for compliance to UL standards. That is expensive, so there is no savings in building a DIY battery if you're required to comply with code.

    • @unionse7en
      @unionse7en Рік тому

      yep, you'd have to get inspected with a minimal UL listed system then add or replace with DIY

    • @JeremySpidle
      @JeremySpidle Рік тому +2

      No one DIY building batteries is doing so commercially, so pretty sure that Code compliance won't become a significant issue.

    • @jstaffordii
      @jstaffordii Рік тому +1

      Only matters if you're installing in your house/living space. Most building DIY large ESS do so in a separate battery shed which negates the code compliance issue. Or they are off grid and not worried about inspection. My electrical inspector only cared about the AC side of the system. Didn't even look at the DC side even when asked if he needed to see anything.

  • @APatchworkCanvas
    @APatchworkCanvas Рік тому

    I’m in PA.. wonder if I could pick these up at the warehouse!

  • @StratRider
    @StratRider Рік тому

    excellent video - building my own with components suits my style

  • @riftvalley1765
    @riftvalley1765 Рік тому

    Thank you for another nice video brother

  • @EndlessBatterySolutions
    @EndlessBatterySolutions Рік тому

    excelent.

  • @dr.projectx5142
    @dr.projectx5142 Рік тому +1

    Nice that's great to know. Love the video ls keep it up.

  • @chuckb9867
    @chuckb9867 Рік тому

    Thank you for your video I look forward to these you're so knowledgeable

  • @Sustainavore
    @Sustainavore Рік тому +1

    Subbed. Love your approachable builds and looking forward to building one when we have our own place. Question: do you think something like this would be doable in a van? 14kwh would be plenty!

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому +3

      Sure, this is something that can be built into a Van. I would spend a lot more time bolting things together and securing them into the frame.

  • @zincfive
    @zincfive Рік тому

    It seems that Battery Hook up doesn't have these packs in stock...

  • @michaelsilberstein
    @michaelsilberstein Рік тому +2

    Geat video. What charge inverter would you put on these to power whole house with the 100kw?

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому +1

      I'm currently using a Schneider XW PRO 6848 inverter. And, I bought a second one to parallel for even more power. I have videos on the inverter. My favorite video is testing the overloading capacity, because It's the best I've ever tested: ua-cam.com/video/nCV1OUrcAaw/v-deo.htmlsi=rsaoG1UQ0sYt0pA0

    • @michaelsilberstein
      @michaelsilberstein Рік тому

      @DavidPozEnergy I have an existing 14.5kw micro inverter PV system and trying to add whole house backup/off-grid battery system. I need 70-75 kw batteries to do this for the worst case days

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому +1

      You may want to research a term called "AC coupling". Some inverters will allow AC coupling, and some don't. If you have this feature, then you can still use your existing solar system (with micro inverters) while the grid is down. I've tested the AC coupling feature on my Schneider and it works well. If you don't want to go Schneider, look at SMA Sunny Islands, they also do it.

    • @michaelsilberstein
      @michaelsilberstein Рік тому

      @DavidPozEnergy Sol-Ark 15kW All-In-One Hybrid Inverter, can it just $7k. And well it is a lot to spend on just the inverter with no one I trust is speaking about it.

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому +1

      Personally, I'm not a fan of the Sol-Ark line of inverters. If you want those types of features, then check out this one: signaturesolar.com/eg4-18kpv-hybrid-inverter-all-in-one-solar-inverter-eg4-18kpv-12lv/?ref=4_rHcgZ9x-TiF-
      note, this is an affiliate link.

  • @jl9678
    @jl9678 Рік тому +6

    After your last battery video, battery hookup ran out of stock on the 20s packs quick! And I missed out. The success of that video hurt me lol so I better jump on this deal stat!

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому +2

      Only jump on the deal, if this battery will work for your needs.

    • @jl9678
      @jl9678 Рік тому

      @@DavidPozEnergy it pretty much seems perfect for my build so I ordered 6. I used your discount- thanks
      edit: boy am I glad I acted quickly: showing sold out on the website already.

  • @cxsey8587
    @cxsey8587 Рік тому

    Could you look into assembling a sodium ion bank? I’ve seen some of the cells out on the market

  • @rustusandroid
    @rustusandroid Рік тому +1

    How did you wire the batteries up for 48v? I don't see anything attaching the two batteries together.

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому +1

      I used an orange copper busbar. It's semi-flexible and left over from a battery I took apart previously. I save spare parts for this reason. I show it in the chapter installing the BMS.

    • @rustusandroid
      @rustusandroid Рік тому +1

      @@DavidPozEnergy Oh, I see it now. Somehow I missed it :)

  • @MRRadio-un7xn
    @MRRadio-un7xn Рік тому

    Hi. Thanks for your service and all information sharing with us. This BMS can configure in close loop with Schnaider? Thanks

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому

      I think so, but I haven't tested it. I have a video setting up closed loop with a similar BMS to the Schneider Insight home. The process might be the same, but you would have to confirm with Orient Power. Like I said, I haven't tested this "DIY BMS" with Schneider. ua-cam.com/video/qs2gE2wR3ZA/v-deo.htmlsi=9TyCDVHETOtc_8Ac

  • @JustmeRichard
    @JustmeRichard 2 місяці тому

    Cool video

  • @GobelPowerBattery
    @GobelPowerBattery Рік тому +2

    If the battery cell capacity is around 280AH, it means it can provide higher current output capacity. Using a 100A BMS may result in a lower current, 200A BMS would be faster.

  • @niffrig
    @niffrig Рік тому

    Maybe use a NEEY active balancer

  • @WiSeNhEiMeR-1369
    @WiSeNhEiMeR-1369 Рік тому

    HOWdy D-P, ...
    Thanks = neat DIY-BMS ! ...
    COOP ...
    the WiSeNhEiMeR from Richmond, INDIANA
    ...

  • @igorkvachun3572
    @igorkvachun3572 Рік тому

    Yes video.👍⚡🔋💡

  • @johnathon007
    @johnathon007 Рік тому

    Is there anything like Battery Hookup on the west coast? The freight from PA is insane to out here in Oregon.

    • @powerwall
      @powerwall Рік тому

      how many kwh you need?

  • @jamesstoffel6835
    @jamesstoffel6835 Рік тому

    Thank you for posting these info / how-to's! I learn alot (and still learning).
    I have a wood shop that I would love to make 'off grid' that could take advantage of the sun and wind in my location.
    Out of curiosity, have you written a 'how to' in building, installing an 'off grid' system that incorporates solar panels and battery systems? Or is there a book you'd recommend, if not a series of books?

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому +6

      I have not written a book. I've read dozens of books on the subject, but I don't recommend any of them. My favorite series to recommend is a 6-part video series from Alt-E: www.altestore.com/diy-solar-resources/off-grid-solar-system-design-video-series/

  • @quartamile
    @quartamile Рік тому

    Thank you! Great video! What's the range of age of the batteries?

  • @TrackGeeks
    @TrackGeeks Рік тому +2

    You may be costing me some money with this video.
    I thought we were friends!! :D

  • @reelrebellion7486
    @reelrebellion7486 Рік тому

    I may have missed this in your previous videos, but have you done an estimate on how much battery you need to be totally off grid? I realize there are many ways to skin that cat, how much power you generate in winter, etc, but a case study does wonders for understanding.

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому

      Thanks for the video idea. I'll add it to my list of future videos.

  • @frankysnephew
    @frankysnephew Місяць тому

    7:42 What's that device (with aluminium fins) on the floor?

    • @DavidPozEnergy
      @DavidPozEnergy  Місяць тому

      That is a battery charger, specifically for LiFePO4. That particular model is not sold, but very similar ones are available. These days, I use the "Chargverter" all the time:
      signaturesolar.com/eg4-chargeverter-gc-48v-100a-battery-charger-5120w-output-240-120v-input/?ref=4_rHcgZ9x-TiF-

  • @outroot
    @outroot Рік тому

    What server rack is this? What's the depth? I have those CATL modules too and I like that they fit in there!

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому +2

      It says "APC Infrastruxure" on it. I'm not a computer guy, so I really don't know how to tell one thing or another. I bought it from my local recycling center for $75. The outside dimensions are 23W, 42D, 82H

  • @mark33545
    @mark33545 Рік тому +1

    Holy shit havent been on your channel in a couple years, i had to click on the thumb nail because it looked nothing like you lol

  • @calcook7057
    @calcook7057 Рік тому

    Thanks for the test and giving me more options for DIY builds! My motorhome is already set up as 24vdc with two 3kw Growatts. Could I use the Jakiper bms and just change its parameters to 24vdv pack settings?

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому +1

      No. The BMS is 48V only. Battery Hookup sells 24V BMSs. Select "8s LiFePO4" from the dropdown list: batteryhookup.com/products/12v-lifepo4-smart-bms-w-low-temp-cutoff?_pos=6&_sid=be404606b&_ss=r&variant=37389087506594
      Although, just now when I snagged the URL for you I see they are sold out. They usually restock quickly, but you could call and ask when they might have more.

  • @valentinguillemot
    @valentinguillemot Рік тому +1

    Thanks for the video ! Do you know if we can you put multiple DIY BMS modules (16S) in serie (for a 600V inverter) ?

  • @mistercohaagen
    @mistercohaagen Рік тому

    I always wanted to see what the mounting hardware looked like to put these types of cells in a car.

  • @jl9678
    @jl9678 Рік тому

    Hi David. Do you have a link for that orange flexible busbar you used for connecting between the two 8s packs? Thanks!

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому +1

      No, sorry. It was something I had from another battery I took apart. If I didn't have that I'd probably use a 1/0 wire with a ring terminal crimped on both ends.

    • @jl9678
      @jl9678 Рік тому

      Many thanks!

  • @williaml2345
    @williaml2345 Рік тому

    I see jakiper also sells a 230 ah server rack battery. Have u asked if they will sell the front panel of that model? Better breaker and I like the terminal set-up a lot more. For safety I assume u will parallel these once hooked up to your system. Whats the Max wire lug u can get on terminals?

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому

      I don't know if they plan to bring more BMS options to the market.
      I was able to fit a 1/0 ring terminal, but it was very snug.

    • @powerwall
      @powerwall Рік тому

      Hi William, you can also choose to purchase our 230Ah battery directly.

  • @phillipleekit9463
    @phillipleekit9463 Рік тому

    Where did you get the batteries

  • @bowbilly9080
    @bowbilly9080 Рік тому +1

    What size battery cable can you connect to the Jakiper BMS? Looked on the web site link but don't see it mentioned.

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому

      I was able to squeeze a 1/0 ring terminal in there, but just barely.

    • @powerwall
      @powerwall Рік тому

      @@DavidPozEnergy Thanks

  • @alexc9388
    @alexc9388 Рік тому

    Than you David. Good video. Question: Does the Jakiper BMS setup work with Schneider xw pro. Is SoC available? Also, what base are you using to place the batteries?

    • @powerwall
      @powerwall Рік тому

      good question, david has schneider XW PRO

  • @jl9678
    @jl9678 Рік тому

    Hi! How is the plywood mounted to the server rack? Thanks

  • @FirstnameLastName-sx8ls
    @FirstnameLastName-sx8ls Рік тому

    This is all very intriguing, however where do you start if you don't have an electrical engineering degree? I love the DIY aspect, but it feels like this is over my head.

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому

      Begin with what your goal is. My goal is to power my house and garage, year-round, off grid. However, you might have a smaller goal in mind. My very first solar project was to have one LED light bulb on, and charge my cell phone.
      There is a great video series that I recommend. It's 6 parts and worth the time to go through them all: www.altestore.com/diy-solar-resources/off-grid-solar-system-design-video-series/

  • @shawnd567
    @shawnd567 Рік тому

    Thats a really good price from battery hookup but i simply dont need that much capacity. Great video though

  • @kingcross78
    @kingcross78 11 місяців тому

    Hi David, do you happen to know where these modules where used? EV cars?

    • @DavidPozEnergy
      @DavidPozEnergy  11 місяців тому +1

      I'm told an "Industrial back-up"

    • @kingcross78
      @kingcross78 11 місяців тому

      Thank you

    • @kingcross78
      @kingcross78 10 місяців тому

      Hi David, do you happen to know the dimensions of the 8s module?

  • @offgridprep
    @offgridprep Рік тому

    Link is not working says page not found on the batteries

  • @RichardLeslieWhereat
    @RichardLeslieWhereat Рік тому

    What would we need if we live in a country with 240v?

  • @realeyesrealizereallies6828

    You need to put a good active balancer on those packs, (NEEY) especially with the studs on those cells, it would be simple to install, or the JK BMS with 2 amp active balancer..A passive balancer will never get those under control in the long run..Communication really isn't important, a smart shunt and the bluetooth app with the JK BMS is really more than enough..I don't even have a shunt for my different two 16s 48 volt packs..It's fine...I'm still building CATL packs I got from Battery Hookup, and I have 16 280 Ah Eve cells, but I'm getting there..Everyday somethings showing up, only need a few more pieces of the puzzle..

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому

      I tested an active balancer a few years back and it made my pack worse. I removed it. There are more than one way to build a battery pack.

    • @realeyesrealizereallies6828
      @realeyesrealizereallies6828 Рік тому +2

      @@DavidPozEnergy Ya, you can't leave them on all the time..Only when the pack finishes charging and is settling into it's regular resting voltage..And then they work like a charm...I charge to 3.45 a cell which is 55.2 volts, and that is when the balancer kicks in, it stays on for an hour until the voltage is resting at 3.35 a cell or 53.6 and the difference between the cells is 3 to 5 millivolts...My buddy hooked me up with that system, and he said he learned it from someone who tests packs on the internet..Works very good..Even on used cells..But, if you leave the balancer on all the time, it makes the situation worse, and I can confirm that, because I tried it on two different packs..

  • @OntarioMiner
    @OntarioMiner 12 днів тому

    Just wondering what type of thread and size the nylon nuts are for the cell terminals (M10, 7/16") and what size bolt (M12, 3/8") and thread were the main battery terminals? I'm putting together my batteries now with the DIY faceplates. You would save me some time ordering the incorrect type. Look forward to your response. Cheers

    • @DavidPozEnergy
      @DavidPozEnergy  10 днів тому

      I'm sorry, I don't remember what they were. I can tell you that they were all metric. I use this tool for finding threads: amzn.to/4j1MZmm

  • @simon359
    @simon359 Рік тому +1

    I am curious, if having that one BMS wire that was 6 inches longer to reach one cell will affect it in any way?

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому +1

      Yes and no. Technically speaking, if we are using NASA grade lab equipment, then the answer is "yes". But, in the day-to-day cycling of the battery, "no". When I tear down pre-built batteries, they have different length wires. As you could probably tell, I left the wires the same length where I could.

    • @simon359
      @simon359 Рік тому

      @@DavidPozEnergy
      Thanks for the answer, as I figured a BMS would be critical. 🖖

    • @g-whiz286
      @g-whiz286 Рік тому

      A minuscule amount of current passes through those "sense" wires, so extending their length (reasonably) should make an un-measurable difference.

  • @fredlo6935
    @fredlo6935 Рік тому

    Hello Dave, Have you gotten your hands on the Battery hook up 51.8v 252ah 13.05kWh 14s ESS Battery Module with BMS battery for sale. Looks tempting, would love to know if we can actually use the bms and RS485, Can, and RS232 it comes with our inverters. Maybe this can be your next video. If anyone can figure it out it would be you.😂

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому

      Hi fredlo6935, I have not tested that battery. Looks very nice.

  • @HandfulOfTranquility
    @HandfulOfTranquility Рік тому

    Your discount codes aren't working for Orient Power. The 8% isn't too surprising since it was limited time, but the 5% isn't working either
    So glad I found this video, I had no idea this diy bms was available. That will actually let me make a professional looking battery that is nicely enclosed

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому

      I asked them about it. If an item is already on sale (example: early black Friday) then you can't double up the discount. Sorry about that.
      Please still use the affiliate link, as it's how I can continue to make these videos.

  • @GobelPowerBattery
    @GobelPowerBattery Рік тому

    Would you like to do a capacity testing on our brand new HSEV EVE 280K cells? We have tested most of them are over 300ah! We hope you can do a test for them too…

    • @jbuszkie
      @jbuszkie Рік тому

      @GobelPowerBattery, Send them to me! I'll test 16 or 32 of them! lol

  • @phillipleekit9463
    @phillipleekit9463 Рік тому

    Where did you purchase thr xatl battery

  • @u.s.militia7682
    @u.s.militia7682 Рік тому

    I’ll never be able this afford anything like this. I’m investing in candles, books, board games and food. 😂

  • @davetelling
    @davetelling Рік тому +1

    You should emphasize that shipping costs are heart-stopping. $500-700 to western NV.

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому

      Shipping is something to consider for sure. Sounds like shipping would add $200-$400 more for you, compared to what I paid. That adds $14-$28 more per kWh if you are buying 2 modules (14kWh). Or, $2-$4 more per kWh if buying 98kWh.

  • @Shadow0fd3ath24
    @Shadow0fd3ath24 Рік тому

    Signature Solar is selling EG4 server batteries brand new for $195 per KWh currently with no DIY/wiring/BMS currently. I want to go that way but the diy is so attractive tbh, think i may go this way instead

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому

      There are pros and cons to both ways. I bought a rack of EG4 batteries about 2 years ago and it's still working well. Here is my affiliate link to Signature Solar if you decide to go that way, you would be helping the channel: signaturesolar.com/?ref=4_rHcgZ9x-TiF-

  • @MacMcCabe2456
    @MacMcCabe2456 Рік тому

    Have you ever built a 36 volt battery for a golf cart ? I'd like to build a 36 volt lithium battery pack to replace six 6 a volt Trojan lead acid batteries. Great videos, thank !

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому +1

      I replaced the lead acid batteries in my golf cart (36V) with a 36V lithium module I bought from Battery Hookup. batteryhookup.com/products/36v-48ah-1776wh-spim08hp-36v-power-module
      Add a BMS, at least to control charging.
      Discount code: DAVIDPOZ

    • @MacMcCabe2456
      @MacMcCabe2456 Рік тому

      Do you recommend that or building one ? I'm trying to save some $$$ but build something that will hold up a function well. Thanks for responding sir.

    • @MacMcCabe2456
      @MacMcCabe2456 Рік тому

      What BMS would you recommend ?

  • @apathy772
    @apathy772 Рік тому

    But, How many years will they last. My electric bill is around 300/month x 12 thats 3600 a yearish its less in the Winter because I live in FL. spending 12k plus idk how much in panels to charge these guys, everything would have to last 5-7 years just to recoup my costs. Do you think these batteries being used daily to power a home could or would last that long?

  • @bertramklauke3951
    @bertramklauke3951 Рік тому

    He David
    How long will they last ???

    • @antronx7
      @antronx7 Рік тому

      2 - 6K cycles or 10 - 20 years depending on temperature and cycle depth. Midpoint 3 cents per kWh cycled 4x cheaper than grid.

  • @worskaas
    @worskaas Рік тому

    Does the BMS come with active balancer? Would it make a difference?

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому

      The BMS has a balance function built in. This BMS uses resistors for balancing, which is usually referred to as "passive balancing". The BMS will eventually balance the cells on it's own, but I sped up the process with an I-charger.

  • @TheAADuke187
    @TheAADuke187 Рік тому

    Where did you get the server rack to fit the CATL packs? I got 12 of these and need to find a sturdy rack.

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому

      My local recycling center. I bought it for $75. You can also search on craigslist and Facebook Marketplace. Use search "Server Rack" and "server cabinet". The CATL module was about 1/8" too wide, so I notched the back rail to slide it in.

  • @MakeItAdmirable
    @MakeItAdmirable Рік тому

    Is there a way to do top balancing and capacity test if I don't have all those tools?

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому +2

      The BMS will eventually top-balance the cells on it's own. I used the I-charger to speed up the process.
      Another alternative I've done sometimes. Get a water heating element, connect two wires, and drop it in a bucket of water. When you are charging the whole battery, and notice one cell is higher than the rest, put the two leads on just that cell and it will burn off some of the power.
      Another alternative is to get a cheap hobby charger, like this $40 option: amzn.to/3Zhlbkx which comes with a accessories. Charge each cell one at a time up to 3.65V.

  • @edseldumanig1358
    @edseldumanig1358 Рік тому

    David, what's the size of the bolts in positive and negative ends? I do have these but there's no bolts included and one positive bus bar end been cut.

  • @OntarioMiner
    @OntarioMiner Рік тому

    Do you have a link or contact for the jakiper DIY bms and faceplate?

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому +1

      Yes. I linked to it in the description along with the coupon code. The company is Orient Power.

  • @rdcabal
    @rdcabal Рік тому

    how many kWh do you now store, David?

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому

      Not all the batteries are in play yet, but once they are, it should be 100kWh. At least, that's been my goal for awhile.

    • @rdcabal
      @rdcabal Рік тому +1

      @@DavidPozEnergy i have about 22.5 (rated), capacity not tester. Still on grid

  • @imnguyen6658
    @imnguyen6658 Місяць тому

    Would be nice that Orient power sells an entire kit instead of just the bms and front cover

  • @AdamDavisEE
    @AdamDavisEE Рік тому +1

    There is already a popular open source project called DIYBMS that's been around for years, and is used with cells like these. This will lead to confusion.

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому +1

      Really? That's awesome there is another BMS option. I hope there is not confusion, that would stink. Can you send me a link for the "DIYBMS" so I can check it out?

    • @hue9514
      @hue9514 Рік тому +2

      Stuart Pittaway's diyBMS

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому

      Thank you.

  • @ahaveland
    @ahaveland Рік тому +4

    I'd get a couple of these if they were available in Europe.
    Also, with a bit of creativity, could parallel up the batteries and cells and use 1 BMS for 2 or more sets, but balancing current would proportionately decrease per cell.

    • @FRESNEL_COOKING_SOLAR_OVENS24
      @FRESNEL_COOKING_SOLAR_OVENS24 Рік тому +1

      Sure you can! You can parallel each identical battery with the same age and capacity.
      If you are looking for best price in Europe, use grade A Fogstar from UK or choose German cells.
      Another good company with good price in UK, is Roamer. You can get 48v 5.4kwh battery for 1.8k with incredible good warranty 10 years which is not easy to find anywhere.

    • @powerwall
      @powerwall Рік тому +1

      Orient Power have battery in Germany, Romania, Netherlands.

    • @glossyfpv1155
      @glossyfpv1155 Рік тому

      We can't even get them here in America so don't even worry about it 😂😂

  • @yeslawrence
    @yeslawrence Рік тому

    When u say “top balanced for 3 days” - does that mean u floated the cells at 3.65 for 3 days?

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому +2

      I charged the pack at a low Amp rating (I got my charger down to 2A) until one cell hit 3.65V and the BMS shut off. This allowed the balance to be on for a couple hours while charging. I then turned off the charger and let it sit overnight. During the night it continued balancing until the cells fell below the programmed threshold. The next day I would discharge a couple Ah out of the pack. Then I'd turn on the charger again at a low current until the BMS once again shut off. I could do about 2 or 3 of these cycles per day. And I did this process for 3 days.

    • @yeslawrence
      @yeslawrence Рік тому

      Dude ur the best thank u for the thorough explanation!!

    • @DavidPozEnergy
      @DavidPozEnergy  Рік тому

      Your welcome. There are many ways to top balance. Sometimes I just use my i-charger. Sometimes I charge each cell individually. If the cells are not series connected, then I can parallel all of them together. Just depends on the situation I'm in at the time.