The JK BMS with integrated active balancer. This is the one!

Рет қаралды 108,387

2 жыл бұрын

This is one of the most exciting delivers I got for a long time. It has finally arrived: the JK BMS with integrated active balancer. The all-in-one solution, the Jack of all Trades under the BMS'.
After some initial problems to get it started (the manual was in Chinese), I am very impressed with the first few tests I'm running: over voltage, over temperature, over current... all disconnects the charger and automatically reconnects after the fault has cleared. Even the app for Android looks very mature and is working without any glitches.
Is this the BMS we have waited for? It really looks like it!
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Пікірлер: 717

@duncans4489 2 жыл бұрын

I bought the150A version based on your movie. It arrived quickly and your work made it really easy to set up. Thank you so much.

@oneman29 2 жыл бұрын

You have made sourcing and comprehending this topic so much easier. Hats off to you Good Sir! 🎩

@alwoolhouse6255 Жыл бұрын

Thank you Andy. I have finally received not one but two from China (the first one was lost then miraculously found). Just about to connect it all up and your videos have been a tremendous help. Cheers from Spain.

@wideawaketotruth5301 6 ай бұрын

Would be unable to setup without Andy's help!

@wideawaketotruth5301 Жыл бұрын

Supper Nice BMS! Couldn't setup without your help!

@rocketfuel- 2 жыл бұрын

After watching many videos of your chanel, i eventually decided to buy this BMS for my 80ah 7s li-ion battery that i've got from an electric stacker (the BMS was dead so they gave me the battery). Thank you for sharing your experience.

@OffGridGarageAustralia 2 жыл бұрын

Thanks. I've just installed this one permanently in my battery shelf. It works great.

@markmorris6357 2 жыл бұрын

Andy, I've learned more from your videos than from any other source. Carry on!

@OffGridGarageAustralia 2 жыл бұрын

Thanks a lot Mark!

@joselito7776 6 ай бұрын

It is through this invaluable video that I found out how to turn on the BMS without that dratted switch which has to be bought separately here in the Philippines. Thanks for this.

@brettwilliams6728 2 жыл бұрын

I immediately bought one the other night after you posted this video. Just have shipping confirmation today. Thanks for the recommendation. I look forward to another video about what you learn about this.

@OffGridGarageAustralia 2 жыл бұрын

Coming soon. Don't be scared by the next video though 😌

@jwsolarusa 2 жыл бұрын

Please share the link with us

@OffGridGarageAustralia 2 жыл бұрын

@@jwsolarusa it's in the video description...

@offgrid2010 4 ай бұрын

Wow. You actually show all the features working instead of most posters assuming all the features work. Very much appreciated!

@creamshop Жыл бұрын

Thank you So Much Andy for testing all these BMS's, making all the same mistakes we would have done and doing all the research , FREE for all of us to learn and enjoy, you are are the mother Theresa of the solar world, ok maybe not, Ghandy is better suited for you ! 😇🙏

@OffGridGarageAustralia Жыл бұрын

Thanks a lot Gilles! Appreciate your kind words.

@evil17 2 жыл бұрын

I really like how the active balancer was still working 2A in one cell when you did some bms shutdown limit tests too. Good info n vid. I have Iphone, so I hope the App is as good as this one of urs. Thanks for all this great info Andy.

@OffGridGarageAustralia 2 жыл бұрын

Thanks Evan. I believe the app is the same for iOS and for Android.

@microbiologycory10 Жыл бұрын

So this BMS is completely configurable through BY from iOS or Android…mo PC with Termite required?!? If so, take my money! Could you provide link to ENG user manual?

@wizzie2k 2 жыл бұрын

Of course we want more testing and we love the looong videos!! Keep it up Andy and don't forget to calibrate in between ;-)

@OffGridGarageAustralia 2 жыл бұрын

Thank you. I tried to keep the video shorted but it's just toooooo much to show 🍻

@davidswiggum 2 жыл бұрын

So I bought one. Came 2 days ago. Installed no problems. Started with 6v battery. Worked fine. Balanced my battery on first charge cycle. Excellent product. No more Daly. Thanks for the video.

@OffGridGarageAustralia 2 жыл бұрын

Hey, that's great feedback. The internal balancer is amazing, right? I really like the functionality and ease of setup.

@jcreedy20 2 жыл бұрын

Hey bud, just curious, I'm looking at both the Daly and JK bms to replace my ANT BMS on my ebike due to the inadequate balancing force and the fact it is passive on the ANT. What is better about the JK over the Daly? I am looking to run 250 amp peaks. Nominal will probably be around 100 amps at cruise velocity. Will the 200a JK do 250 amp peaks??

@excillisbank2611 2 жыл бұрын

Ce BMS est étonnant et incroyable ! je ne savais pas qu'il existait c'est vraiment un BMS HYBRID et très complet.

@sergea1138 2 жыл бұрын

Pas si complet, Il est bien mais il manque la gestion de la résistance de pré-chargement et impossible de gérer plusieurs bms sur la même interface rs485.

@MiguelSilva-mb6mb 2 жыл бұрын

Yes, Finaly a great BMS - Just like mine. You will love this!!!

@OffGridGarageAustralia 2 жыл бұрын

I already do!

@kondalaruthala3624 2 жыл бұрын

Andy, Nice to see your channel. Very good

@OffGridGarageAustralia 2 жыл бұрын

Hey, thanks

@timburk6097 2 жыл бұрын

This seems to be the one! 8s available now also! Awesome! Thank you.

@fionnhovawart9594 2 жыл бұрын

8S, I can't find it on their site. BMS starts with 14S LFO..

@tomtebloss89 10 ай бұрын

Had really hard to find a good BMS, i needed minimum 120a x3 and overkillsolars is only 100a. So I just ordered 3pcs 150A of this BMS to my first off-grid planning (even stocked in Poland :) . Thank you for reviewing different BMS! /Greetings from Sweden

@victorrizalfilosofi 2 жыл бұрын

Just recieve the item today Thanks for the detail video Sir!

@rudisoft Жыл бұрын

Based on your review, I bought two of the JK-B2A20S20PHC (maybe I'm destroying one, yet better to have two than needing one). Thanks for your work!

@PRASTRO 2 жыл бұрын

🎉🎉🎉🎉🎉🎉yesssss now you are in shape, I was waiting for this video since you started, I have 4 years working with this BMS and not a problem at all there are the best for your needs, congratulations 🎈🍾🎉🎊 you finally find the one 💪🏼💪🏼💪🏼💪🏼

@charlesrichards5389 2 жыл бұрын

4 years? Jeez, now I feel like I've been living under a rock.

@OffGridGarageAustralia 2 жыл бұрын

Thank you. They are on the market for quite a while. Good to hear they last a long time.

@chevaliercognac8757 5 ай бұрын

Thank you for your very useful videos!

@reversemyopia 11 ай бұрын

I can't thank you enough for making this useful video! My hesitation to build my own battery have been solved

@OffGridGarageAustralia 11 ай бұрын

Thank you very much. Good luck with your battery build.

@NounXXX Ай бұрын

@@OffGridGarageAustralia📌 *Есть мысли, чтобы при отключении городского 220в, автоматически включалась JK BMS* ❓🤔 В Щитке стоит АВР

@upnorthandpersonal 2 жыл бұрын

I've been running two of those for the past year without issues. Probably the best BMS in this price range one can get.

@mrzed6597 2 жыл бұрын

You helped me start my unit a long time ago :) Still running without problems. Thanks ;) I fear the price of this unit will go up like a Falcon rocket now :)

@upnorthandpersonal 2 жыл бұрын

@@mrzed6597 NP :) I vaguely remember. I've done so several times for other people as well on the forum - at least there appears to be a manual in English floating around now. There should be enough vendors out there to prevent too much of a price hike. That said, with component shortages worldwide as they are, that might impact pricing as well.

@mrzed6597 2 жыл бұрын

@@upnorthandpersonal I fear it will be like the cells. A year ago EVE 280Ah was $1800. Now it is $2300 (for EU). More demand, higher prices.

@Sanwizard1 2 жыл бұрын

I agree with up North and Personal. I have two of these running now perfectly for quite some time.

@Sanwizard1 2 жыл бұрын

@@upnorthandpersonal is there a direct link to EVE?

@The2000redrocket 2 жыл бұрын

Hi there I just got the new jk 200a with the display. It only has a red and black wire on the cable not hooked to anything. You connect these momentarily to start it. That was nice. The cable going to the display does not have the 12vdc power to power the display. I'm using alligator clamps across 4 cells to power it. And it is mostly in Chinese so I asked if you can change language somehow on it. It was 29 bucks. With the app I think it is not really a got to have item. The app wouldn't see the bms. So I had to go in my phone app settings and give it permissions. Then it worked. This is the 2a 24cell 200a I'm using on 8cell batteries so I had to get a 24 to 48v boost to power it. All in all I think this is a great device. I'm glad I got it. Nowi have to fully charge and draw it down to get the meter calibrated.

@Dutch_off_grid_homesteading 7 ай бұрын

Heya, oke oke that looks like a very good bms can't wait for the next vlog with testing this bms I still need 2 bms's

@jamesattwood6809 2 жыл бұрын

Great Video Andy! Appreciate detail - and if a video runs long it means more detail, more learning and more knowledge shared. Just bought this BMS on your recommendation. I would really like to see a video on simplified starting procedure (using a 9v battery for example). I have visions of a tiny 9v battery just exploding with the wrong hook up lol!

@hugodeandres1497 2 жыл бұрын

Dont forget Daly BMS’s are widely used. It is all i can ask for to use in my 14s e-scooter. Its 12Ah and peak output of 18A. It doesnt need anything too fancy

@jkbms9549 2 жыл бұрын

谢谢你选择JKBMS你讲解的很好

@ahlidap Жыл бұрын

I own a JK Smart BMS and I'm super happy with it so far... Highly configurable, no need for extra messy wires for balancing... I just think that, for big packs, they could allow fir up to 5A balancing and, of course, thicker cell wiring. Just hope they keep updating and supporting!

@DanBurgaud 2 жыл бұрын

27:07 "... the only i have not seen here is a pack overvoltage..." You are correct that to get to that pack overvoltage, it needs to reach cell overvoltage first. What I am interested is an overvoltage from the "source" wherein BMS disconnects itself from the SCC if incoming voltage is too high

@trevornelmes9331 2 жыл бұрын

Just in case, like me, you have a BMS already and simply want the equivalent Active Balancer, JK also sell the same thing but as an active balancer only. If you already have your battery assembled and taped up, they also have an adapter board that you can plug your existing BMS wiring into from the battery, the adapter goes in to the active balancer, and has ports to cable to your old BMS.

@OffGridGarageAustralia 2 жыл бұрын

Ah, great information Trevor. Thank you. That's very good to know. Such an adapter makes a lot of sense.

@GREGGRCO Жыл бұрын

No !! A real metal case ?! Crazy talk !😂 Our great grand children will have no idea what we're talking about ! My first good laugh of the day ! Thanks !!

@OffGridGarageAustralia Жыл бұрын

I know, it sounds, crazy, right?! 😂

@arrongrist868 Жыл бұрын

I like the opening few seconds of the video, very funny. I think a lot of people will not get it unless they or their offspring have played the game. 😊

@billpemberton3982 2 жыл бұрын

That's a nice all in one solution Andy. I will sure be looking for that when I build my system. Cheers! "SPAT"

@OffGridGarageAustralia 2 жыл бұрын

Thank you Bill 🍻

@user-ty9lt4ck6c 2 жыл бұрын

Dear Andy, for LiFePo4 this particular BMS (and as far as I can see all from this line) in fact CAN be used for 8S setup. LiFePo4 - from 8S, Li-Ion - like from 7S and LTO - yes, from 12S onwards). This is taken from specs page on Ali.

@AlexanderBurgers 2 жыл бұрын

It even works with even lesser cell counts but then you need to supply it with an external 12v supply to the B+ pin on the balance connector.

@tukorcan Жыл бұрын

thanks for help .

@mrzed6597 2 жыл бұрын

Also known as JK Heltec BMS. As we said half a year ago it is the best product for these cells. You did a big detour, but at the end everyone comes to the same conclusion :) There is a big thread about this BMS on Will's forum. With the description how to start it with 5V using a lab power supply. Also RS485 communication with RasPi.

@CROSpunkie 2 жыл бұрын

Do you know of any US resellers that stock these?

@mrzed6597 2 жыл бұрын

@@CROSpunkie Sorry, I am from EU. So I do not have a clue :) I ordered directly from China.

@arhitektche 2 жыл бұрын

link please

@Cooldudeblue261 2 жыл бұрын

Where is wills forum

@OffGridGarageAustralia 2 жыл бұрын

I knew about these BMS' for a long time already but I also wanted to explore other options, like the Daly and the QUCC with relay, the active balancers and smart balancers. All this all in one unit makes totally sense.

@upnorthandpersonal 2 жыл бұрын

Power off voltage is the voltage at which the BMS itself turns off to prevent slowly draining the battery.

@mrzed6597 2 жыл бұрын

Funny side note: the very expensive LG RESU 10h does not have it (or set too low). A unit's battery was completely drained when it was 1,5+ years in a storage. Lithium batteries loose max 3% SoC/month.

@OffGridGarageAustralia 2 жыл бұрын

Ah, right.. that's a good tip, thank you. Makes perfectly sense. So turn off voltage will turn of the BMS once one cell hits this voltage?

@upnorthandpersonal 2 жыл бұрын

@@OffGridGarageAustralia Yes, exactly.

@akimi0222 2 жыл бұрын

You've been saying "Please! please! please!", expecting a lot of packages eh?! Great video! As always :)

@OffGridGarageAustralia 2 жыл бұрын

Thanks Michael. Getting new stuff all the time and I was waiting for this for sooooo long now...

@jmaus2k 2 жыл бұрын

What is really important with solar is that the charge current is as high as continuous discharge current. Great find.

@OffGridGarageAustralia 2 жыл бұрын

Both 200A for this one. Far more than I need.

@TheDigitalMermaid 2 жыл бұрын

Ahahaha! I was reading the specs for that BMS when you reminded me of my little adventure. ^_^

@OffGridGarageAustralia 2 жыл бұрын

Couldn't resist 😂

@TheDigitalMermaid 2 жыл бұрын

@@OffGridGarageAustralia I'm ok being "the idiot that proved the value of T-class fuses" ^_^

@Sanwizard1 2 жыл бұрын

I saw your adventure! Be careful!

@MrSebastjan1973 2 жыл бұрын

Hi, one question. Do you think you can connect this JK BMS to the Victron GX device via CANBUS?

@sreekumarUSA 2 жыл бұрын

092521/1608h PST 🇺🇸 092621/0908h Brisbane 🇦🇺 Good day to you, Andy. Thanks much for exhibiting relentless quest for perfection. But for me, my CNS got hay wired and I’m in total confusion. Don’t worry, it’s my intelligence or the lack of it. I do really appreciate the mirth and the technology mixed together from Brisbane. Take care, Sir; please continue your quest, research and results for the public. Errr.. I saw a glimpse of Oettinger ! Have a nice weekend and 73s…

@mathewemy 2 жыл бұрын

Thanks

@frankseidinger2112 2 жыл бұрын

I liked the part where the Oettinger Pils is the solution of the day :-)

@DavidHalko 2 жыл бұрын

Great review!

@OffGridGarageAustralia 2 жыл бұрын

Thank you.

@danfitzpatrick4112 2 жыл бұрын

JK has to be the best I've found! I have had the JK (balancer only) since the beginning of my setup and absolutely love it. (I use it for monitoring) and only balance at above 3.4v as a maintenance tool every now and then . This combo BMS/Balancer is the one I also will upgrade to at some point. Great Vid! Thanks for sharing

@mihaitaiosub 2 жыл бұрын

I also use two active balancers from JK. The problem with them is that it does not have the automatic start and stop function of the balancing depending on the cell voltage, at 3.5 volts for example. How do you start the manual balancing when you need it? leaving it on permanently could destabilize the cells.

@danfitzpatrick4112 2 жыл бұрын

@@mihaitaiosub Spot on. That is not available on the balancer only version. I leave the balancing off and only turn it on for the occasional maintenance. I wish it had the feature to turn on and off at certain levels in the settings.

@mihaitaiosub 2 жыл бұрын

@@danfitzpatrick4112 That's what I did until a day ago. Yesterday I made a small electronic change to the two devices that allows me to leave the balance on, without the device to do the balance in real time. I really trigger the balance with an external relay energized by the Victron charger depending on the total voltage of the battery bank, in my case I set it to 54.8 volts.Now it works perfectly. If you are interested in the change I can teach you.

@OffGridGarageAustralia 2 жыл бұрын

Thanks for sharing, Dan!

@SolvoltDkwebshop 2 жыл бұрын

You talked well about these jk-bms and I bought 3 pcs. I ordered jk-b2a24210p and got sent version with rs485 plug in. I assembled them correctly with the balance wires which are all measured through. Put bms on negative. And put laboratory power supply with negative on bms-out wires and positive on battery plus, and with more than 5V difference, bms does not start. What am I missing in my understanding of how this works? Is there a difference between the versions of jk-bms?

@holgerj7520 2 жыл бұрын

The settings look similar to the ANT-BMS. Only the that one has no active balancer. Really good video

@OffGridGarageAustralia 2 жыл бұрын

Thank Holger. Never seen the Ant BMS or the app. I thought it uses the same xiaoxiang?

@mikewasowski1411 2 жыл бұрын

So cool. Glad you found and shared. Now… to find one for 12v!!!

@johthe 2 жыл бұрын

You can use it with a dc to dc booster from the same 12V to get the B+ line between 40V to 100V to use it anyway. Remember just that the dc-dc booster could drain the battery if left connected without charge for a long time.

@charlesrichards5389 2 жыл бұрын

Wish I could get one for my 24v system as well.

@OffGridGarageAustralia 2 жыл бұрын

@johthe will this work with the BMS as well though? It works with the active Balancer I showed recently but with the BMS???

@johthe 2 жыл бұрын

@@OffGridGarageAustralia Now we have to test it, don't we. I reason they can not tell it works with lower number of cells since it does not come with an extra DC-DC booster included in the package and it would be false advertising if they would announce it working with less. That is why it varies with cell chemistry to get over the 40 volt minimum to use and drive it directly with the monitored battery. That said it could also be that someone of us is wrong..

@stevemacdonald3522 2 жыл бұрын

Happy Easter from Canada Andy. With the Easter theme do you worry you will have all your eggs in one basket with the huge BMS. Could you not have two half banks with a switch to transfer either one in the case of a problem with the other.

@johnkillen588 2 жыл бұрын

You are a character!!!! thanks for your efforts.

@briannoakes1789 2 жыл бұрын

Hi Andy, great channel. Slowly making my way through your EVE cell/JK BMS videos. I was wondering if you have made any progress with enabling the CAN/485 interface to control Victron CCs and Multiplus IIs? I know you have the Rasp Pi, but like many others I have a Cerbo GX. Do you think the Cerbo will work with the JK at some point? Keep up the good work!

@Earlonics 2 жыл бұрын

Hi Andy I've been using what looks like the same BMS (JK BMS) for over a year now, works a treat, the only pain is having to have 3 volts above battery voltage to switch the BMS on. Once its on it does stay on, the reason I got this one is for the 2A balancing, my other one was balancing too lower amperage.

@OffGridGarageAustralia 2 жыл бұрын

I'll have to figure something out in regards to the start voltage. It's not ideal having that but manageable. The BMS seems ideal as it combines a great BMS with an active balancer.

@rocketentertainment7403 2 жыл бұрын

Yup, im running into that issue consistently :( today, i just cant get either bms to turn on at all

@bstaab2590 Жыл бұрын

@@OffGridGarageAustralia Was this topic followed up here! Or are there updates on the part of JK that enable switching on through another function?

@OffGridGarageAustralia Жыл бұрын

@@bstaab2590 That has been sorted with an upgrade on the BMS. It now comes with a start button and a display. I tested the 4S version with display here on the channel: kzfaq.info/get/bejne/gqqRn9F0lZexink.html

@microbiologycory10 Жыл бұрын

Is the new version with start button and display only available as 4S version (that’s the only link on website). If not, can you please provide link or part number for 12S+ with start button?

@jkbms9549 2 жыл бұрын

你讲的很好

@traviswansai2784 2 жыл бұрын

The itching question concerning lifepo4 battery banks. What Balance current should really be required for a battery pack using brand new 100, or 200 amp hour batteries. And, What balance current, or cell voltage spread would be considered to be too much during charging/discharging that would indicate a bad cell. I looked at the EVE 105Ah specs yet no recommendations were found. Andy you have a great deal of experience in this area, so any recommendations would be helpful... Thanks.

@arturkarwowski1163 2 жыл бұрын

Andy you make great videos, can you tell me if it is possible to connect this BMS via RS485 connector or some other way to Victron inverter or other inverter it is about JK BMS communication with inverter ?

@Beyondreality76 Жыл бұрын

An important point for the JKBMS setup is the voltage calibration. Measure the voltage exactly at the battery connectors and set this voltage in the BMS-Setup. The BMS works well in total but the SOC finding is a mess. Why the did not make an entry to setup the SOC in the setup menue manually? Daly BMS has this option and it is more favourable to enter or correct SOC from time to time.

@_JustBeingCasual Жыл бұрын

@Off-Grid Garage what size did you use to mount those ring terminal on the JK BMS cables, would that be a SC10 or SC16?

@GerryMitchell-sg3dd Жыл бұрын

I have watched many of your videos concern the BMS and active balancing. I am building a 230ah battery pack for a Polaris EV. I started with a Daly 500a BMS and it fried internally. I ordered another and it works but it doesn't read the cell voltage correctly which causes the charger to turn of prematurely. I have been in contact with Daly and they tell me it needs a firmware update. I cannot get my computer to communicate with the BMS. This is very frustrating and Daly is little to no help. I have wondered if adding an active balancer like NEEY could help with this problem. I'm really tired of wasting money with Daly. What BMS do you recommend to be the best all around?

@stevenbraun3115 2 жыл бұрын

I am using the LTT version of the QUUC. It has the black internal relay. The application is a 48V golf cart. I have LiNMC batteries in a 14s configuration with 135A. I also have 300W of roof top solar feeding a Victron 100 20 MPPT, a Victron BMV 712, and a built-in 15A battery charger. The BMS has been an absolute nightmare. I think it's defective. I cannot figure out how or when the relay works. I have ordered the JK BMS.

@samornprapruet5300 2 жыл бұрын

Hi Andy , From Thailand here. I have a question about JK bms on the screen had been show up Protection was “Cell Over Voltage)(OS)”. Also Bms had many time cut off then make Inveter isn’t working. How can I fix this problem? Please,Can you help?

@boringsoftware2093 7 ай бұрын

THANKS GERMAN AUSSIE MAN 😎👍🏻🍺☕☀ IT ACTUALLY HELPED ME A LOT :D AS THE MANUAL IS CRAP! AND THEY KEEP CHANGING EVERYTHING! HINT: APP ONLY WORKS IF U SEND YOUR GPS LOCATION TO CHINA! (it will not find the JK BMS via Bluetooth unless LOCATION SERVICE (GPS) IS ON AND IT U ALLOW THE APP TO USE IT)

@gyulakun7346 Жыл бұрын

Hi Andy, I really like your videos, congratulations. I have a question, do you think the JK BMS with integrated active balancer can be configured for a lead acid forklift battery? 48V 775Ah. Between what values can the cell voltages be set? The main thing would be the monitoring, but if the active balancer also worked, that would be very good. I wish you good health from Hungary. Regards: Gyula

@bentleyjarrard885 2 жыл бұрын

Thanks for the excellent all-in-one BMS review. I really like the Voltage Threshold setting so balancing only occurs during the charge cycle above the Set Point voltage. The only thing that worries me about this product is the 200A current being passed through the PCB, much prefer a separate high current contactor or relay like the QUCC product. Really hope they upgrade the firmware on the stand alone balancer products as well. I'm using the 2A version on a 120Ah battery and discovered the same thing you did, continuous balancing in the flat part of the cell voltage range tends to unbalance the cells. Perhaps a future video you could go into more detail about the CAN and RS485 communications.

@OffGridGarageAustralia 2 жыл бұрын

Thank you. Nothing I have tested so far was 100% perfect. The JK BMS though comes very very close and I would give it an over 90% rating so far. I'm not worried about the 200A for two reasons: I'm not going to push more than 100A through it anyway and the internal resistance of it with 0.3mOhm is so low, that even with 200A it causes only 12W of power loss. Heat stress is not a problem with this BMS.

@typxxilps 2 жыл бұрын

@@OffGridGarageAustralia the 0,3 mO is also a factor to take into account I had not recogniced or would not have realized. But 200A x 50V would mean 10.000W and 12W is not that big deal just 1,2 promille. My 1000 kWh battery usage needs 1200 kWh feed in to get 1000 kWh out, which would mean 0,0012 x 2.200 kWh = 2,64 kWh for the pure BMS and on top of cause a bit for the operation of the balancing part I guess.

@AveRage_Joe 2 жыл бұрын

Looks like a Solid Unit!! NICE!!

@OffGridGarageAustralia 2 жыл бұрын

I really like it so far. Doing the balance test right now and it looks sweeeet!

@ambersmith6517 2 жыл бұрын

why no videos joe

@AveRage_Joe 2 жыл бұрын

@@ambersmith6517 Work has been super busy and I have been worn out to do much of anything. I am editing a video meow tho!😆

@doppelnippel Жыл бұрын

Danke!

@OffGridGarageAustralia Жыл бұрын

Danke dir für deine Spende und Support!

@Refertech101 Жыл бұрын

As some one who does power systems and off road equipment I can tell you, all ways crimp and solder! then double wall heat shrink!

@PowerPaulAu 2 жыл бұрын

Looks really good. Ticks (almost) all the boxes for me, but I really wish they would also make some that are 4S and handle 250A, that's a sweet spot for some of the things I do. But for a home setup, it's ideal. Having so many settings is great, but for some people it may also be overwhelming, and it's sometimes a little too easy to make a mistake which causes problems. But hopefully it's pre-programmed with generic safe settings for the majority of people. Good find Andy, I'm sure one will be on my bench before too long. * Not sure about the main cables though, they look a bit small for 200A continuous!

@OffGridGarageAustralia 2 жыл бұрын

Thanks Paul. That's the big - on the list. It wont' work with packs below 15s configurations. The same with the active smart balancer I showed recently. 30V minimum voltage. I wonder if that is because of the active balancing and they need that voltage for the circuits somehow.

@ytteman Жыл бұрын

@@OffGridGarageAustralia It will work with 2-24 cells, but it needs a 40-100V supply on the B+ terminal, which can be generated by a DC/DC step-up converter. The B+ terminal is supply only, it can be different from the battery +. The current consumption for B+ is max 10 mA at 100V, so a very small step-up converter is needed.

@SakCyb 6 ай бұрын

Yip I am also hoping for a 4s one

@basspig 2 жыл бұрын

Mitechguy at Treeline power system says to hook a 9-volt battery momentarily between the B- and the black lead to turn on the b m s.

@williamriley3125 2 жыл бұрын

i was laughing so hard when you pulled up that diagram with the 5v battery..like what?? lol

@supernovatiger8913 2 жыл бұрын

Thank you man , i wonder if it provides historical consumption data ?!

@stelucostache5827 Жыл бұрын

Hello I watched your videos with BMS settings for 48v 280A batteries. I would like if you could tell me what the working voltages of the battery would be at a percentage of 20% and 80% respectively. Thank you

@houseofancients 2 жыл бұрын

promissing looking indeed andy, following with great interest

@OffGridGarageAustralia 2 жыл бұрын

I'm really excited about it.

@houseofancients 2 жыл бұрын

so far i've been testing my seplos bms's , they have as added benefit that they allow intercommunication up to 6 bms's and inverter. however, its never bad to have an alternative

@amagro9495 2 жыл бұрын

Hello Andy. What's your suggestion about this: I'm top balancing 8 272Ah cells. The typical method is, first put them in series with a bms and charge to 3.5v; second connect them in parallel and charge till 3.65v. Since I have a JK BMS with 2A active balance, should I leave them in series and wait for bms to balance them, or should I connect them in parallel and let them reach 3.65v?? Tks

@longdistancerider691 2 жыл бұрын

hi, could it be that the energy dump intermediates, just happen to charge capacitors and then discharge into the lowest cell ?

@deanrowles3665 8 ай бұрын

Hi again Andy, Have been googling but cant find anything. Do you by any chance know a link to a wiring diagram, having trouble working out the 2 black wires on each battery connection plug. Thanks

@fabienlabricole1774 2 жыл бұрын

hello, should we put a discharge circuit before switching the BMS on the inverters? Thank you

@diysolaradventures7894 Жыл бұрын

Andy JK BMS have 4-8S versions of that same bms for around a $100 bucks on eBay I believe

@jetspeed81 3 ай бұрын

Great Video, one question, in Version 10 of this BMS when you turn on Balance at the top status area it shows Balance On all the time. But in the newer model HW/SW v11.xx even if Balance is toggled on it shows OFF. I believe it only shows Balance on when it is balancing. Can you please confirm. Thanks

@francispomares8786 2 жыл бұрын

hello. More than a year ago I had the bms of the video JK b1a24s-20p but I changed the keys and now I don't remember what it is. Do you have any information on how to recover it or some way to reset the BMS ... thank you very much

@glenb1356 Жыл бұрын

I just got my JK BMS with 1A active balancing. I charged the pack and the status display is great. The charging shut off like it should at 4.2V (NMC 140Ah pack). But, I have one cell at 3.65V. It seems to me that a 1 amp balancing capability is going to take a very long time to fix my half volt imbalance! ???

@GavinWallace18 2 жыл бұрын

These Videos are FANTASTIC and made me start to design my own system. I have a question from Scotland though; Will the JK BMS work with the Multiplus 2 directly without a shunt? If so, how does the MP2 know the state of charge of the battery? Many thanks Gavin

@OffGridGarageAustralia 2 жыл бұрын

Thanks Gavin and welcome to the channel. Yes, you can just operate a battery, a BMS and the Multiplus II without a shunt. The Multiplus II will measure the battery voltage itself and disconnect if the battery is empty. No problem with that.

@GavinWallace18 2 жыл бұрын

@@OffGridGarageAustralia This is good! however we still would like to know whether it will display the battery charge percentage when connected to the raspi Venus OS using a mk3-USB interface? We are keen to know the State of Charge at all times. Thanks for your time 😀

@GavinWallace18 2 жыл бұрын

Any thoughts on the above Andy?

@OffGridGarageAustralia 2 жыл бұрын

@@GavinWallace18 I don't think it will display any SOC or battery state without a Victron battery monitor or shunt.

@diysolaradventures7894 Жыл бұрын

Do they make other models of the JK bms for 8 cells in 24v ? I've seen so many different ones I just want to make sure I get the right one

@BrianCook-dc8pz Жыл бұрын

Hey Andy, will this JK bms work with my 12kw inverter that does not have communication protocol? Is it necessary to communicate with the inverter with this bms. Thanks for your videos. I am learning a lot and I'm in the process of building two 48v batteries very soon.

@YouTubeviolatesmy1stamendment 2 жыл бұрын

Yeah I had a totally different brand and type too where you needed to use a multimeter on diode tester and connected across the b- and p- to get the BMS to turn on after you first connected the balance leads

@charlesrichards5389 2 жыл бұрын

I've seen some where you just short b- and p-, and others that have a separate trigger wire to touch 5v to turn them on. I suspect this one can be triggered on by doing what they said at 12:55 (touching 5v across b- and p- then connecting the battery) which would usually fry a BMS but this one seems to be made for it.

@willgeorge5644 Жыл бұрын

I want to do a test like this on the BMS from a Nissan leaf, many available from scrapped battery backs. they are set up for li ion of course, but maybe that can be changed? I am interested in the operation principle. I think it may not be just a shunt one. I do have the circuit and there are some unexplained inductors and other components on each cell.

@uddemannen 2 жыл бұрын

Is it possible to adjust max amp out? Bought a Daly but ordered wrong and now I'm going to buy something else and ran over this. I'm building a off-grid solar wind power in my cabin and I'm away at work every other week and that would be perfekt for active balancing

@stoptheirlies 2 жыл бұрын

Andy, good video, mine arrived and has two extra sockets but I can't find information as to what they are? Also there is a RS485 module it has the plug to connect to the BMS but the other lead has no plug on it, what plug should be connected, there is zero information, if this module a RS485 to USB? if so why did they not put a USB plug on it? can you help please. Bob

@eduardoperez891 Жыл бұрын

Dear Andy. I'm ready to star my JK BMS, how could I find your instruction video for parameters settings and values. I will like to follow your instructions.

@ianpope7061 Жыл бұрын

Just a qery, is the Cell/Wire Ressiatnce could be measuring the internal resistance of the various cells??

@scotthenderson4376 Жыл бұрын

I will be building my 1st pack using this BMS and have a 24v 16 amp power supply with a ISDT Q8 Battery Charger/Discharger, Balance Charger Discharger 20A 500W DC 2-8S , I also ordered a 0-12v 60 amp power supply (that's supposed to go up to 60v but not hopeful) question is do you think I will be able to wake up the BMS or should I get a 60v 5 amp power supply like yours? The pack will be hooked to 4k of solar when all said and done.

@juancazorla3746 2 жыл бұрын

Hi Andy, are you sure a 2* 7AWG or 10-16mm wires can stand 200A charging or discharging continuously?, Would it be possible to replace those 2 wiring for 1*50mm or 2*35mm?, Victron is recommending thicker wires for that current than Chinese Manufacturers :S. Good video review btw :)

@mandimandi2523 2 жыл бұрын

Hi Juan! I did not use the short pieces. i replaced them by 2 times 16mm² equal to about 35mm² and continued after 15cm with the 35mm². i agree that the 200 A is very optimistic. 35mm² single cable can be charged with 160A according to german standards. I am also not sure whether the bms can withstand 200A/350A... and honestly i would not do .... i would limit the input/output to 150A... Compared to the DALY 200A BMS the JK is tiny ....

@raymondcasso7966 2 жыл бұрын

Finally one bms to rule them all!

@OffGridGarageAustralia 2 жыл бұрын

With some restriction in terms of 12V and 24V packs...

@raymondcasso7966 2 жыл бұрын

@@OffGridGarageAustralia give it time.... just give it some more time =)

@dARocaLPH 2 жыл бұрын

Danke für die tollen Videos. Sie halfen mir eine Kaufentscheidung zu treffen. Grüße aus Deutschland

@OffGridGarageAustralia 2 жыл бұрын

Danke Dir!

@philippesteindl3356 2 жыл бұрын

Silly question: If oyu use the display of the JK BMS (which needs 12V I think) .. how do you get those 12Vs off the whole solar setup ideally? From the Battery Busbar with some 48V->12V converter?

@OffGridGarageAustralia 2 жыл бұрын

Isn't the power for the display not coming from the BMS directly?

@ianpope7061 Жыл бұрын

I notice JK now supply 5A and also 10A balancers. When would you consider such substantially more capable balancers?

@kyba74 2 жыл бұрын

The only possible issue is that all mosfet based BMS, if they fail (IE due to high voltage spike from broken solar charge converter), will fail with a short. Thereby allowing full access into the battery. For that reason I'd be more inclined to use a BMS with a separate contactor

@OffGridGarageAustralia 2 жыл бұрын

Yeah, OK, fair enough. The BMS should be the safety device for the SCC. If the SCC fails, the BMS should turn off. So you mean we would need a third instance of safety. Something like SCC->BMS->contactor?

@mrzed6597 2 жыл бұрын

@@OffGridGarageAustralia There was a case on the forum where a 24V SCC got into short allowing the PV 100V 10A directly to Daly 24V BMS (FET's shorted too) and to the LFP cells. Cells bloating, magic smoke released. Since then we are searching for a cheap preventive solution to this possible battery killer error.