JK-BMS: all settings and menus explained. How to program and set parameters.

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In this very detailed video, I explain all the settings and menu options of the JK-BMS. If you're new to the JK-BMS or just want to understand BMS settings in general, this is the video for you. I also give a lot of context and explanations about why I have chosen these settings and why they make sense.
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7 сен 2024

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Комментарии : 787

@nicksnicknet Год назад

I tend to catch up on your video's at night. My wife says your voice is very soothing, and she drifts off to sleep. She has no knowledge of anything battery related (not has learnt anything since hearing you) but is sleeping very well 😅

@WitcherShade 2 месяца назад

Thanks! It was very useful. Constructing a power bank to survive next winter with the powersupply for several hours a day here in Ukraine.

@buzzymoto9809 2 года назад

An example of how good this BMS really is. I installed 32 EVE 280 cells with no top balancing, hoping the JK BMS with active balancing would do it. The cells varied from 3.1 to 3.4 VDC. Three days later, the difference is 7 MV. Great product Andy, thanks for the recommendation.

@OffGridGarageAustralia 2 года назад

Thanks for sharing. That's what I do as well, I don't bother putting all batteries in parallel any more, I just let the BMS handle it.

@Rfhdvcgf Год назад

@@OffGridGarageAustralia true true I got my batteries around 10pm I just parreled it till 10 am and connected it to the BMS and a day later it's in balance with .2mv diff

@BernhardJHess Год назад

I made the same experience.

@christosxenopanagos2737 Год назад

I'm trying to find for 32 cells and I can't find it, please a link where you bought it I will be grateful thank you.

@jonasstahl9826 Год назад

@@christosxenopanagos2737Most likly 16s 2p configuration

@philipbasson5862 2 года назад

Thanks Andy. I really appreciate all the time you put in making these videos. I learned allot from your videos so far. I want to echo what someone here said, "As always, you are meticulous and thorough with everything you produce in you videos."

@OffGridGarageAustralia 2 года назад

Thanks a lot, Philip. I appreciate your kind words and support. Thank you!

@ZecxyPumpkin 2 года назад

I switched to the jk bms from the daly, best decision ever. It's the product a lot of us waited for: BMS, active balancer and a heating pad control in just 1 product.

@firpofutbol 2 года назад

I have the same product (with heating pad control) coming in the mail. Do you have any heating pad/element recommendations?

@OffGridGarageAustralia 2 года назад

I think it's the best integrated BMS on the market. The easy setup and active balancer makes it outstanding. My 4s-8s BMS has the heating option too but I don't have the connector to test it out. It's only 3A, I believe...

@tonytober 5 месяцев назад

The video is pretty long but is very informative so was worth watching every minute of it. Thank you!

@gumpster6 2 года назад

Great walk-through of the JK BMS. Once again, you have done what nobody else has.

@OffGridGarageAustralia 2 года назад

Thank you. I will continue this series with all the other equipment I have.

@buzzymoto9809 2 года назад

Another S.P.A.T from me to Andy. If you have used this good man’s content and haven’t gone to his web site and bought him a beer, you should do so ASAP. I used his recommended suppliers for 32 EVE 280 cells and a couple of these awesome BMS units. This video was “icing on the cake” Thanks again Andy.

@OffGridGarageAustralia 2 года назад

Great advertising, thanks for the S.P.A.T. 🍺

@FutureSystem738 2 года назад

Thanks Andy, awesome stuff. It’s always a good day when there’s another video from OGG!

@janmatusiak1380 Год назад

I used JK-bms for my e-bike battery build after watching this video. thank you . great job

@off-gridmountaineer4515 2 года назад

The way I took it on the Vendor ID Name is. JK is the name of the company. The B2A stand for balance at 2 amps. 24S Stands for 24 in series. And the 20P stands for 20 in parallel that's the way I always took their ID name as. Thank you love your work on RU-vid. I AM A BIG FAN!!!

@krg038 2 года назад

15p is 150a, 20p is 200a. Not sure what the P is for.

@OffGridGarageAustralia 2 года назад

Thanks, man. 20P for parallel... you can have as many in parallel as you want, I guess. One does not interfere with the other BMS's, does not know how many are in parallel.

@evil17 2 года назад

My guess is the ‘P’ is for Parallel and they are using 10ah cells as a reference point, just guessing.

@panospapadimitriou3498 5 месяцев назад

@@krg038 POWER maybe .. those chinese developers are unpredictable

@alinarghira5471 3 месяца назад

Not parallel guys. It is from amps. 20P means 200Amp

@NoOne12 Год назад

As most people have already said I thank you greatly for all the time and energy you've devoted to these video's. I just picked up the jkbms to replace two daly's that I've started to run into balancing issues with. These video's saved me so much time determining which bms to use as a replacement and with installation/setup. I truly wish I could afford to send you a super thanks at this time but some day when I can spare a few bucks I'll send them over for you to buy another cold one!!!

@outdoor-buddy Год назад

Thanks for this great explanation. Just finished my ESS this evening.

@HarshanaSamararatne Год назад

Thank you for all the details explained. I am planning set my own DIY lifepo4 battery pack and was looking for a BMS brand that can trust. JK is a reputed brand in Sri Lanka as well. And you explaining all the features one by one was amazingly helpful. It might take few months for the batteries to ship but now I know where to start. As I read in comments Top balancing is no longer an essential task as the BMS does take care of it. So thanks for the great information. Take Care ❤

@denim_7861 2 года назад

vielen Dank für die Videos, die für den deutschsprachigen Bürger sehr gut verständlich sind!

@redmerbootsma9375 2 года назад

Installed mine today with a Victron mppt 75/15, 100ah lifepo4 and a 100w solar panel for camping. Perfect and thanks for the detailed reviews and setup guide.

@ilinik255 Год назад

Thank you. As an inexperienced user, I could not immediately figure out all the parameters. Now everything is clear. However, I had to learn English for this.

@plgsekip Год назад

Thanks Andy. I bought the JK BMS after watching your videos, actually. 😅.

@A2an 2 года назад

I just receive 2 JK BMS, yesterday. There was a Power switch on this model, so I believe that the time where we had to jumpstart the BMS with a battery voltage. Thanks for the video, now I don't have to use a lot of time to examine all the settings 👍

@monsieurd.6890 2 года назад

Mine had a switch power button too. Good idea.

@OffGridGarageAustralia 2 года назад

Yes, all new JKs are having a display with power button. Honestly I have jump started mine exactly once since I installed in the battery shelf. It will never disconnect unless I take the battery apart.

@manuelmuller6117 2 года назад

Hey Andy! Ich wollte nochmal DANKE für deinen Rat sagen. Mein System läuft jetzt seit knapp einem Monat und es schaut alles super aus. Viele Grüße aus dem Sauerland!

@OffGridGarageAustralia 2 года назад

Danke Dir! Sorry, konnte nicht mehr per email antworten, es sind einfach zu viele.

@arturkarwowski1163 2 года назад

Thank you Andy for a great movie and another great lesson.

@keezergeezer 8 месяцев назад

Thank you Andy. I’ve successfully fitted a 4-8s JK BMS following the video that ended in magic smoke, I had to check ahead so I knew it wasn’t a fitting instruction issue 😂. Now I’m getting the settings tuned 👍

@calendarking55 2 года назад

THANK YOU! Just what I needed. A detailed, methodical, non-rushed explanation of the settings. Legend. 👍

@OffGridGarageAustralia 2 года назад

Thanks a lot, hence a 40min video. It takes that time 😁

@marcoarpago 2 года назад

Great video Andy, I have been waiting for it from long time. In just a month (August) finally I will install the first 304Ah batteries and JK, so I will copy your settings in mine. Thank you !

@uwefrommelt7329 Год назад

Hi, for me as a German your English is very clear and good to understand! Thanks for all your testing, it helps me very good to understand the Technics overall. Now I will look your Victron Smart Shunt Video ;-)

@OffGridGarageAustralia Год назад

Thanks, Uwe.

@pragmaticcosmic2826 2 года назад

Oh I jumped straight into tech head and neglected to say...thanks Andy for your excellent work... Cheers 🍻

@OffGridGarageAustralia 2 года назад

Thank you!

@krzysztoforlowski6010 Год назад

Your channel is a treasure. Can't stop watching the videos. I am not sure if it is the deep knowledge you provide, your accent or your moustache. Are you planning to do any video about JK setup for parallel cells? For instance 16 cells setup as 8 pairs in series for 24V battery bank? Will this setup work? Wonder of your expert opinion and test of course. Thanks.

@MrHolderfreund 2 года назад

Hi Andy, in my opinion the Con.Wire Res. ist the resistance of your cell wiring. The BMS is able to calculate the "real" voltage of the battery because there is a voltage drop that becomes more important on higher currents e.g. 50A and higher. The voltage drop may be some mV but it is important, because the polarity will change while charging or discharging. so it must be added or subtracted from the cell voltage! greetings from Germany!!

@bjorn_moren 10 месяцев назад

The cell wiring (bus bars) is in the order of 1 mOhm. It is probably even less than the internal resistance of the cell, which is around 0.25 mOhm. The Con Wire Res values on the screen look like around 150 mOhm, so they can't be the bus bars, they must be the balancing wires.

@Spaniard47 Год назад

Thanks for this video. I couldve guessed the functions of 80% of these parameters, but it's very valuable to know exactly what I have control over, as well as within what range they should be set to. I find it very interesting that the balance trigger voltage on mine was set to 3.0V by default. That's 10%!

@offgridwithpojectham 2 года назад

Loved the video. As always, you are meticulous and thorough with everything you produce in your videos. I've been a long time fan and look forward to every video! Would love for you to someday install a Batrium BMS system on one of your batteries. Please consider this at some point in the future. Take care and hope that someday soon you have the sunny hot Australia back so you can charge charge charge! Take care my friend.

@tehdreamer 7 месяцев назад

Thanks for your vids, I've ordered new JK BMS 300A from ali express for 80 pounds. I'll use it with my 620AH 12v bank I am going to build for my camper.

@derekcfoley 6 месяцев назад

Hi Andy, Thanks for your very informative videos and reviews. I did a conversion from lead acid to 16 x EVE 304Ah cells in my G-Wiz EV using the JKBMS 20S - I did this about a year ago, and watched your videos to help me decide which kit to buy. Since winter time, I'm having issues with some of my cells, probably due to stress and low temperatures affecting performance. The "SOC" on the display is basically correct, but on my vehicle when I go below 40% soc, one of the cells starts to underperform, usually when the heater is on, I'm accellerating hard and going uphill... momentarily dropping below the cut-off voltage of 2.45 and the cut-off engages, stopping the car, a few seconds later, the voltage increases and it works again, I obviously turn off the heating and acellerate more gently. The other cells are obviously all ok, being over 3v. I was wondering if its possible to change the "SOC" so 0% is at the real level of 40% where my cell starts to play up. How could I do this? perhaps change the cell capacity value lower? I've ordered a replacement cell ... but I'm also mulling over adding another cell so its 17 in series to help.

@jws3925 2 года назад

Another great video. Completed my battery about 6 months ago and wanted a JK BMS but at that time they didn't have one for 4s. I went with the Overkill (JBD) and so far it is working well and the cells are staying well balanced so far. Someday I might need that increased balance amperage but, fortunately, right now everything is running smoothly. I am going to try the JK BMS on my next battery. Thanks for what you do.

@OffGridGarageAustralia 2 года назад

Thanks John, the JBD is certainly a good BMS and I would use them as well. The Overkill I have (rebranded JBD) works well without problems.

@carlossanz181 2 года назад

@@OffGridGarageAustralia Hi Andy! Which one do you prefer for a 4S battery pack, the JBD or the JK BMS?? Congrats for all your videos and your channel. Amanzing work!

@joebalciunas6962 2 года назад

Thanks Andy! My JK BMS 4S arrived a few days ago. I was wondering how to program all the settings. This video was super helpful! Have a S.P.A.T. on me.

@OffGridGarageAustralia 2 года назад

Thanks a lot Joe, much appreciated! Enjoy the JK.

@jackoneil3933 2 года назад

Thanks Andy! And perhaps it's not just the accent, but more the movie set.

@OffGridGarageAustralia 2 года назад

Thanks Jack. I try to mix things up a bit. As you can tell, I'm not a tripod fan 😂

@jackoneil3933 2 года назад

@@OffGridGarageAustralia And all for the better...

@danr7715 4 месяца назад

Can confirm the short circuit protection works well in the jk bms, my inverter blew a mosfet while i was at work thankfully the bms was there to disconnect.

@gayanattygala1633 9 месяцев назад

Nice and informative video. Thank you very much. Connection wire resistance may be important when the balance happens. Balance current goes through those small wires and there will be a voltage drop when ~2 amps goes through them. And if we set up a correct resistance of them, then BMS can calulate the individual battery voltage by adding them to the messuring voltage of a cell.

@JR.M.S 2 года назад

That’s so true. I like the accent and the rumble off “fully discharged and fully charged, really good results and…hmm the “further to due”!. Makes me wake up in the morning and gets me sleeping at night. But I will say that for me personally the most important aspect is Andy’s educational performance. :)

@OffGridGarageAustralia 2 года назад

Thanks a lot, appreciate your feedback and kind words!

@russellribeiro1039 7 месяцев назад

I am been very much blessed and educated by your videos. Thanks a lot for your wonderfull work. Receive our warm gratitude. Russell from Rio de Janeiro Brazil

@PoornaAbeytunga Год назад

Thank you for the great explanation . Your videos helped me a lot to setup my own off-grid system !!

@OffGridGarageAustralia Год назад

Thanks for your feedback!

@deviantstudio 9 месяцев назад

what a beautiful garage, sir. it's literally a dream of every decent man. 👍

@BernhardJHess Год назад

Excellent. Thank you. Saves me a lot of time reviewing data sheets. Greetings from Gemany.

@OffGridGarageAustralia Год назад

Thanks, Bernhard.

@ktestable 2 года назад

Can confirm. I probably would not watch this content if someone else hosted this video

@korvjankorvjan300 2 года назад

Thank you for this and also the video about the charge controller settings! It would be really really interesting with a video about the settings for the Victron shunt as well.

@kelSto3878 2 года назад

I cut the sense wires to different lengths, to neaten up the mess on top of my battery and of course it does show differentiated resistance values on the status tab. There was a bit of a debate on the forum regarding the wisdom of cutting the sense wires of BMS's, however it seems to be functioning perfectly. (WHEW! this first time builder thought id made a mistake...) However, the question of the settable resistance values on the settings tab is one i'd sure like to have answered... thanks Andy!

@OffGridGarageAustralia 2 года назад

Thanks Kelly, perfectly fine to shorten or extend the balance cables. There is no downside to that. The BMS is either measuring cell voltage or balancing but never at the same time, so cable length is not an issue.

@kelSto3878 2 года назад

@@OffGridGarageAustralia So, just to be clear, i cut the sense cables to various lengths. Individual wires are NOT equal lengths. Conversation on the forum regarding the wisdom of doing that revolved around other brand BMS's and group thought it a no no... Andy, your work has helped me tremendously and i thank you.

@mikehotel5652 2 года назад

I was surprised to see, that my Manuf. Date showed 2022-07-08. It looks like the BMS saves the date of first operation! ;)

@frankthies221 2 года назад

Andy, congratulations on exceeding 34,000 subs! I think word is getting out about your channel. Good news travels fast! All the best!

@OffGridGarageAustralia 2 года назад

Oh, yes, damn, I missed this again. Thanks a a lot!

@markdavidson6321 2 года назад

Helpful and thorough information, as always. Thanks Andy!

@OffGridGarageAustralia 2 года назад

My pleasure!

@wildez007 2 года назад

I know this is my future BMS purchase all in one , currently using JK ACTIVE balancer and XiaoxiangBMS ✌️

@OffGridGarageAustralia 2 года назад

How is this JK Balancer? They are not cheap either, right?

@kenlillia 2 года назад

Thanks for the lesson Andy, will help when my JK arrives. Cheers

@aussieaustrian8704 2 года назад

Thanks Andy I’m still catching up on all the videos. I think the German accent added with Aussie slang is great. Actually laughed out loud this morning from another video when you said “it sh1t itself”. Keep up the great work.

@MrSqueegey 2 года назад

Go enjoy that beer Mr.Andy thank you for this tutorial.

@OffGridGarageAustralia 2 года назад

Thanks, will do!

@foxtrotwhisky4061 3 месяца назад

First of all, your videos are amazing Andy! SO SO helpful that you test all these BMS's so we don't have to! And you explain so much. So many of the tricks and traps around battery charging and balancing. Great stuff, thank you! I'm getting confused though. You have a video demonstrating how active balancing can actually unbalance your cells because it is always on. Then we have the JBD Muller Edition BMS which turns off its active balancer when it's not needed, supplanting the JK BMS at the top of the BMS pile. Problem solved. Now I see this video for the JK BMS settings, which let you set the balance start voltage to 3.45v.... why is the turn off feature on the Muller BMS any different from this ability on the JK? Does this mean the main difference between the muller BMS and this one is just the maximum discharge current (250 vs 200(ish)) and the active balancing current (5A vs 2A)?? Many thanks from the UK!

@drewsuf77 2 года назад

As always great content. I only run a 4s 280ah setup using Daly( for a higher amp draw,as there is nothing much else out there) but I find your videos very interesting and informative. Would love my own off grid setup but I rent and can't justify building something portable. Keep the content coming.

@LambySRI 2 года назад

Absolutely nothing wrong with daly. Good at what they do. Csnt fault mine after a year.

@onthelake9554 2 года назад

@@LambySRI If you look around you will find a few complaints . ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-JbnFyU79Nf0.html

@pfunnell70 2 года назад

What's the max amp draw on that? I have a 4s JBD that is rated 200A with 0.5A balance, haven't tested it extensively yet but seems good so far.

@OffGridGarageAustralia 2 года назад

The Daly's are good for this exact purpose and can handle up to 500A continuously. As you said, nothing else out there (unless you go QUCC with a relay function). The balancing totally sucks though so an active balancer may be needed.

@egg399. 2 года назад

There is a 500A jkbms but it needs external relays. JK-B2A25S60P

@cbcb3360 Год назад

Brilliant video, could not find a manual and you explained everything

@alanblyde8502 Год назад

Well described Andy, I always found these batteries daunting but you have described this to a tee👌

@matthiasmittermayr1675 2 года назад

Hi Andi, i think SHORT Circuit is at 350 A (max Amps the BMS can handle) ..in the datasheet is written 200A Continuouse and 350A max

@christianvollmer167 2 года назад

Yes, it is

@OffGridGarageAustralia 2 года назад

Would make sense. Thanks. I shall try, ey? 😁

@B4x4 2 года назад

@@OffGridGarageAustralia yes. Please.... Maybe not... 😁👍

@evil17 2 года назад

That would make sense.

@xt1200z1 6 месяцев назад

My eve280s come today. Plan to set them up just like yours. Had no idea what to set the inverter (Sol-Ark 8K) to before watching your video. I have a 14s100p 18650s battery and currently run them 54 volts and 45amp limit (very conservative settings). Plan to replace them with the lifeP04s, but since the voltage is nearly identical, might try parallel at some point.

@LucPellerin 11 месяцев назад

You are TOP GUN BMS teacher for DUMMIES...me😅 can't thank you enough!!!

@OffGridGarageAustralia 11 месяцев назад

Thanks for your feedback!

@natesoffroad Год назад

I figured out what the cell wire resistance is. It's the resistance placed on the wires so the bms can remember the cells out of balance difference. When you have cells of un equal WH duringg initial top balance those values get tuned so next time you charge up you don't get cell run away..

@thomasbreth7991 Год назад

The only thing that makes sense with the connector resistance-table is to compensate the voltage-drop caused by the resistance of the power-connectors between the battery-cells/blocks. In my job i am specialist for UPS and have to take care of about 3000 battery-buffered systems in a big chemical factory. We do a lot of capacity probes with single block measurements and to evaluate the results it is nescessary to know which batteries are connected with longer connectors than others (e.g. to pass over to another level in the battery-rack). For there is only one sense-wire for measuring the plus-pole of one and minus-pole of the next battery, you always measure the voltage of one block/cell plus the voltage-drop of one power-connector. And this voltage-drop is not negligible... e.g. one connector only 40cm longer than the others in a system with 70mm² connectors will already cause about 5mV higher voltage drop at 50A resulting in 5mV less cell-voltage measured and - if not compensated - falsifies the state of health-judgement.

@monsieurd.6890 2 года назад

I am French and I think you have an accent too. But strangely an accent that makes English easier to understand for me. All people speaking English should speak with this accent lol.

@OffGridGarageAustralia 2 года назад

Hahaha, great. Merci beaucoup!

@DavideArzarello Год назад

Great video, it helps me a lot to tune my JK BMS

@OffGridGarageAustralia Год назад

Great it helps. Thanks.

@briarbenchhomestead946 10 месяцев назад

Hi Andy. I've been watching your videos. Lots of info and learned how to assemble my own 280ah 16s lifepo4 battery. I'm having some issues with my JK smart bms. I bought an inexpensive dc charger from Amazon, but I didn't have much luck. So I assembled the battery and wired in the bms. I attached my Lithium battery charger to get a top balance. It won't charge past 3.34v/cell the AH rating sits at 198ah. The voltage is 53.56, which is 97% charged.

@bjorn_moren 10 месяцев назад

Thanks Andy, great video. JK BMS coming in the mail in a month or two.

@dig1035 2 года назад

Forgot what I was gonna ask! Thumbs up and still subscribed!

@OffGridGarageAustralia 2 года назад

Ah, great thanks a million times 😆

@lumixfreund7113 Год назад

Vieles war mir klar aber alles wusste ich auch nicht. Danke für deine Erklärungen !

@edwardvanhazendonk 2 года назад

Thanks Andy, this is very informational. Good stuff.

@marceloehme7541 8 месяцев назад

Besser kann man es nicht erklären! Vielen Dank!! Beste Grüße aus good old Germany. :-)

@jorghog4481 2 года назад

Hi Andy, many many thanks for the really detailed info about these settings.! will use them when setting up my JK 16S System roughly the next month. Best Regards, Jörg from nearby cologne, Germany

@markwitkop7022 Год назад

Andy, you are a hoot. 🤣 I appreciate the info that you provide. Thanks.

@chriskxx1115 2 месяца назад

"User Private Data" is field that can be set in the JKBMS App to identify the BMS in a multi battery environment.

@jackiedines5229 2 года назад

Amazing video Andy, finally I have got my battery ready to calibrate the BMS, all due to your instructions. I got a JK BMS for 24v which was the only one at the time, I did want 12v, but I have used the buck converter to get the 24v. Did the 7v short trick (thank you) to get it started. Using the software on my iPhone on the status screen, I can only see half the screen, the other half disappears under the settings screen, might be due to the version of iPhone. The only other thing is that it will not let me change the Charge UTP setting and it defaults to -20 degrees! It will never get that cold here in WA but it does get down to freezing especially outside and early morning. I can change most settings which I did not think I would be able to on the iPhone, I thought I had to pay for that. Oh well am now a little bit further down the road on the journey. Thanks so much for all your nerdyness😎

@OffGridGarageAustralia 2 года назад

Thanks a lot for your kind comment and words, Jackie. That is great to read and I'm always pleased if I can inspire people following their own projects. Version 4.7.4 is the newest one I believe. Not sure why it does not let you change that parameter. Do you get frost in winter near the battery, is this really a concern?

@jackiedines5229 2 года назад

@@OffGridGarageAustralia I have now obtained a disused Samsung phone and this is what I will be using as I get the full page of info and can see all the parameters when scrolling. I downloaded the latest version V4.8.2 - woopee it now changes the UTP, we are in the hills outside of Perth and it is always 1 deg cooler up here...lol - probably do get the odd frost, YES you do inspire me, I am a bit of a chronic DIYer but it is great to be able to collaborate with other likeminded people. There is always stuff to learn and it is what makes the world go around! All I need now is to be able to see what my battery is doing over the internet, when I am away. But I do not have any Victron stuff, my battery is basically providing off grid power to my aquaponic setup, idea being power outages will not kill my fish! Thanks Andy.

@OffGridGarageAustralia 2 года назад

@@jackiedines5229 thanks a lot for the update. Great to hear it's now all working.

@olafschermann1592 3 месяца назад

Thanks for reminding us changing BMS password!

@excillisbank2611 2 года назад

Formidable vidéo explicative ! merci ANDY pour cette experience de configuration du JK-BMS.👍

@DanBurgaud 2 года назад

37:57 "User Private Data" This is a ONE-TIME user changeable data. You can enter a string and it will be made PERMANENT! What use for? Use as a signature like "Andy's JK BMS" such that if stolen you know it is yours. Or Battery name like "JK BMS Bank #1". So when you have multiple JK BMSs around and you want to know which JK you are viewing, just go over here. I repeat, this can only be changed ONCE.

@ajnsan Год назад

in app version 4.9.3 it can be changed over and over

@DanBurgaud Год назад

@@ajnsan NICE INFO! Thanks!

@DanBurgaud Год назад

@@ajnsan I tried it today: version 4.9.3 and all the other higher versions, no dice.

@igorbattaglia3540 4 месяца назад

seguito video passo passo mi hai convinto, ora acquisto jk bms😁 grazie

@andig69 2 года назад

Like always! Great video! Thank you for that! A remark to the calibration of the current value. In the beginning I had the same issue. But the reason for that was the load I used... An inverter... And this pulls not a constant current from the battery. The current has high high ripple with twice the grid frequency. At the end I used a large pure DC load with high current and repeat the calibration. Than it works perfectly and I get a good accuracy for the current measurement. Another point I did not understand is the over current protection of the BMS: I can understand that if I draw only a little bit over the defined limit the time until the BMS switches of takes for example 30s (when set to this value). But what happens if I draw for example twice the defined over current limit? Takes it the same time for switching off? This could be dangerous. What is needed here is a fuse characteristic: The higher the over current is the shorter the switch off time should be. Maybe anybody knows something about this? Or this would be an interesting test for Andy 😉? But again, thanks for your interesting videos!

@OffGridGarageAustralia 2 года назад

Thanks Andi, that is absolutely correct and the ripple effect can be the cause for the calibration issue of the JK-BMS. Usually you just don't have any other loads you could connect to a 48V battery. The second point of your question is what I was asking for in my video as well. In case of a short for example, how does the JK determine that? In other BMS's (the QUCC or JBD), I can define a current threshold for a 'short' and a reaction time for the BMS to shut off. Totally agree with you here, that is a very missing setting in the BMS. I'll take this back to Hankzor and see what they say...

@evil17 2 года назад

Good points Andi, and Andy did refer to this “What is a short circuit current” issue with the JK, it needs to be addressed.

@TrevorFraserAU Год назад

Exactly, we just come here because we want to see and here you! Battery learning is just a plausible excuse...

@Atarytube Год назад

Hi Andy, maybe this is not new for you, but while I was following this video to learn a bit more about the JK-BMS settings, I found that my version has a new setting called "Device ID", what can be very usefull if like me you are using the modbus driver for Venus OS.

@frommetall Год назад

You are so cute :-) , and for me as a German, your english is very good to understand! Nice video.

@wideawaketotruth5301 2 года назад

Brilliant walkthrough settings! Thank you Andy!

@keyem4504 2 года назад

Since your are du hyped about these BMS I ordered a second one. A 2A24S15P (2A balancer current, 150A). This is also printed on the casing and reported in the firmware. However, when I opened it the PCB had a label 1A24S15P, indicating only 1A balancing current. Seems I paid 20€ more just for a different firmware. I hope the hardware is really capable of 2A balancing current...

@OffGridGarageAustralia 2 года назад

Oh, so what now? Did you get a discount or are they sending a new BMS with the right specs and you can keep this one?

@finfin82 2 года назад

Awesome conclusion of the jk hmso settings! Sadly I'm still missing the heating function part... Looking forward to getting any further information on that, since I'm building my battery within the next few weeks. Greetings!

@OffGridGarageAustralia 2 года назад

The 4s one I had in my hand has the heater function but I don't have the cable for it to connect anything. I will have a look in the BMS settings to spot the difference.

@finfin82 2 года назад

@@OffGridGarageAustralia Anything new here? i will start building in the next weeks and want to add the heating function from the beginning - i have no clue how to use it or which pin is what. any idea where to get the correct cable? cheers from sunny hot germany :-)

@MaddinGerk 2 года назад

Oh juhu 42 min! Du solltest öfters lange Videos machen! :) Schöne Grüße aus dem regnerischen NRW wir haben 0 Amps outside :P Aber wenn wir die Blitze Einfangen könnten..... Hmmm...

@OffGridGarageAustralia 2 года назад

Ich habs schon gekuerzt. es war ueber 50min lang... 😂

@johnnyc4544 2 года назад

Ask and receive! Thank you for this video! 👍

@OffGridGarageAustralia 2 года назад

Rule #1: Always listen to your audience! 😉

@VetSemperFi Год назад

I believe you said that you don't turn on the "Balance Only When Charging" feature. That is probably fine in your location but I turn it on here because our temps easily go below 0c. Setting the cell CUT (charge under temp) protection to above 0c is not enough to prevent damaging the cells. This is because the CUT only controls the FET's and stops the current into the battery. However the balancing current is still allowed between cells when the other balance parameters are met.

@ilya7zz Месяц назад

This is an amazing video, thank you!

@FishFish1995 Месяц назад

Hello Andy! I have watched this video many times when setting up JK BMSs for many projects (solar and others). Really helpful video, thank you! Since the JK BMS software has slightly been updated, do you maybe have some updated settings to share? 🙂 For example they have changed the way the over and under voltage protection and recovery works in conjunction with the 0-100% SoC reading. A positive or negative reply will be equally appreciated 😁 Thank you for your good work.

@julianhorner4922 Месяц назад

Agreed would love to see an update since the recent changes were made! There have been several new settings added to the app. LCD Buzzer Trigger, Device Addr., UART1 Protocol No., etc. Also, will not allow OVPR to be set higher than 3.5V

@Leandro2S_ 4 месяца назад

Good job. A hug from Brazil 🇧🇷

@rilosvideos877 4 месяца назад

Hi Andy, great Videos and instruction on LiFePO and BMS! I am just learning to use the JK BMS with my new 105LF-diy battery. I wonder how i can show the actually charged Ah into my battery? I don't find any information on the JK app about the charged (or discharged) Ah? That would be good to know and easy to calculate for the BMS i guess. I there any setting for this to show the Ah?

@sreekumarUSA 2 года назад

063022/2107h PST 🇺🇸. Danke Herr Andy. Xiaoxiang BMS (JBD) is sold under several names and Labels (some with ridiculous nomenclature)as requested by the bulk buyers/sellers. They are good, they are very intelligent, user friendly und very configurable. I have twiddled with it for several years now and finally settled with your advice and configuration. The system functions quite well and flawlessly in conjunction with VICTRON 100/30 Charge controller. Cheers, guten Tag und 73s…

@jobdoneperfect9176 2 года назад

who else is here for the content and bonus accent?

@Stockbodyshawty 2 года назад

A big reason for the for the cell wire resistance is due to the high balance current. I have mine set to balance to within 0.008 volts (8 millivolts). When it detects a high cell more than 0.008 above, it will start pulling 2 amps from that cell. With a wire resistance of 0.147 ohms, 2 amps of current draw will cause the reading to drop 0.294 volts. 294 / 8 = 36.75 That is an induced measurement error of 36 times as much as the voltage difference we are trying to measure. And the revers happens on the low cell. When it tries to push 2 amps, the voltage will jump up that 0.294 volts. That is not the real cell voltage, it is only voltage drop through the balancer wires. When you first power up the balancer, it cycles balance current in and out of each cell to measure those values. It then calculates a correction factor when it is pulling or pushing balance current. It is actually a very smart way of being able to monitor the cells while balancing.

@OffGridGarageAustralia 2 года назад

Thanks Luke. But the BMS will only ever measure the voltage of a single cell OR balance this cell but never does both at the same time. It may show the cell voltage during balancing but I doubt it takes this into account as a real measurement as this would make no sense.

@christianvollmer167 2 года назад

Hey Andy, I think the wire resistance is not the sense wires as this makes really no sense. I am very sure that the BMS is sensing the resistance of the the bridge wires between the cells ! This would also make sense to have the limits for that in the settings. Also, the measured values seems to fit into the expectation. This is also a security feature to find loose or faulty battery bar connectors. Loose battery terminal can lead to burning. Update: No, it is really the line resistance of the balance leads. They use it to detect false connections

@OffGridGarageAustralia 2 года назад

Thanks Christian. I have to try and take one balance cable off the battery or add a resistor to se what the BMS does when it detects a higher resistance.

@marijnvroegindeweij5001 Год назад

@@OffGridGarageAustralia yes Andy, YES, test it 🤓

@chuxxsss 2 года назад

Accent I through you had an Aussie accent with a twist of German. Very cool accent to me. The wiring resistance is important Andy, works output how much Voltage to send each cell to keep each battery to a maximum of 2 Amps, I believe, I still maybe worry. But as a Ex calibration technician this makes sense, right. E=V/I. Without current there is no Voltage.

@76queen 2 года назад

Without voltage difference there is no current!

@GEORGEPRENTICE-zn4qj 4 месяца назад

Hi, thanks for your very interesting tutorial on the JK BMS. With regards to the B2A20S20P BMS. My question is with regards to the connection of this BMS to the Victron system. What would the 4 pin port be set to RS485 or CAN?