Does the JK-BMS need two cables to cell no. 8? It's the last Gobelpower upgrade...
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- Опубликовано: 23 май 2024
- I'm going to upgrade the Gobelpower SR1 battery from the original Pace BMS with Heltec 4A smart balancer to the JK Inverter BMS. All three Gobelpower batteries then have the JK BMS built-in.
This will be the base for the next series of tests I want to make with several of the JK Inverter BMS connected, communicating and working together.
So, swapping the Pace for a JK BMS is pretty straight forward as most of the components fit and only the actual BMS needs to be swapped out.
Well, that was the case with the 100A BMS we did a while back, but is very different here, so some serious DIY action is needed.
I also test if the second balance cable from the BMS to cell no 8 is necessary for the JK BMS to work. Some of you have asked what the deal with that 2nd cable is...
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Hello, I am a sales of JIKONG JKBMS. Regarding why there are 2 B2 pin , it is because in the early stage we needed to interface with the product of another equipment manufacturer, so we designed 2 B8. Their functions are the same. In the later stage, we will improve so that there will be only one B2 Pin, if any friend have problem about BMS , you can connect me……
My BMS only has one for no8 👍
A Dutch guy in Germany watching a German RUclipsr in Australia... :D Thanks Andy, Grußßen aus Nürburg (Vulkan Eifel, Rheinland Pfalz)
Thank you. What a weird constellation 😄
I think the reason for the two balance cables attached either side of the fuse is due to the voltage drop over the fuse when drawing larger currents.. The voltage drop will be greater over the fuse than the normal busbars joining the other cells together and therefore the BMS would see a different cell voltage on either cell 8 or 9 (cell voltage plus fuse voltage drop) and that may cause balancing issues or make the cell deviation look worse than it really was.
Hmmm, good explanation...
Cheers from Canada Andy, our long summers are never long enough, what I wouldn't give for your "winter weather" here instead of -30C. Love the videos mate.
Hello to Canada! Watching a channel from northern Ontario sometimes and am amazed that people wearing t-shirts at 18°C.
87.2k Subscribers and good information. Thanks again for your time today. 😊
I appreciate all you are doing for the solar off grid community, thanks
Hello. Great clip again! The JK BMS installation manual is showing the third connector without the first voltage cable in use. Actually, my last BMS received from JK is coming from the factory without that wire.
Me to. All my mew BMSs doesn't have additional wire for cell 8
Some of us are watching this from the same country and will have solstice soon, like you.
Andy!!! Super Video.
Many thanks!
You are the best Andy
Thank you😊
Love your videos - I've learned a ton from these! Big cheers from sunny hot Norway (for the moment... ;) )
Thanks a lot for your feedback and hello to beautiful Norway. I watch Tesla Bjorn for 10 yrs now and are familiar with the locations and weather over there.
Good video, packed with hands on fitting. With similar but different items like the comms board floating around, I have several boxes of little stick-on labels. I use to mark modules or items with notes and date, as I know I'll see them again, being an older tech.
I hope U get a waist-high trolley soon with locking wheels to manage all those units. Much better than squatting on cold winter concrete floor. It would have to come with the optional strong apprentice assistant, to help to get those cases up onto the mobile table to start with though.
Haha, I just need Andy2 here to help me with these boxes. But he's hibernating somewhere.
Yeah, I will build a good size dolly soon but it will be floor based again. I don't like having these heavy loads elevated on some sort of trolley with scissor lift.
Thanks Andy
Thanks, Wayne.
Hi Andy, I nearly got caught out with 2x #8 terminals on the JK too! I only just avoided magic smoke 😁I tested the continuity (which you’ve probably already done too), and they are 100% the same place on the JK, so only one is needed. 💨 ⚡️
Gobel Battery Boxes in to 42' Server-Rack - Cool Work 👷 - From 🇩🇰 Denmark 👍
We were planning on upgrading from our lead acid battery bank using prebuilt 5kw rack mount batteries but after watching your videos we bought 30kw of 280a EVE cells from Gobel that were pre-imported so we did not have to wait 3 months.. We also went with the JK BMS and got two B2A24S20P because I am going to use 17 or 18 cells since my inverters can handle up to 64vdc input and should run cooler using higher voltage and lower amps.. You poisoned me with your LiFePo4 ways Darth Andy, now I am experimenting with batteries..
Andy, I noticed on my 280-watt solar RV it was charging 4 - 6 watts on a beautiful full moon cool night - The Solar Panel was a REC with a mirrored back that was claimed to be especially good in low light - the MPPT was EpEver - the battery 12v lifepo4
Thank you for that beautiful full moon story.
Oh, wow. I have never seen my system turning on at night. 34V was the maximum voltage I have ever seen.
Bombastic
Hi Shaggy!
@andy I am not so happy with the inverter JK in multi device mode. I hope you’re going to run the inverter bms in multi device mode soon to check all functions
E.g. if you use Victron homeassistant and the JK submits data to home assistant you only see the master values of the cells. I tested it with a new pack and reported cell voltage min and max was only master values.
At least with victron protocol, maybe it works with pylontech…
I would like to see ALL cells in homeassistant
(Running hardware 15 of the bms and 15.17 firmware)
Yes, I will thoroughly test all this.
But, yeah, that is expected. The master reports only the collated data to the Victron/inverter and you won't have access to all the single cell voltages.
I have another solution for that though and will show it in the next video.
@@OffGridGarageAustralia expected? Well Not really. Pylontech will Display it in the victron World as 0102 or 0302 so you know module and cell.
This would be easy to fix for JK in the software… I hope the solution is not an additional device like a Peter board.
@@andreasw5925 At this stage, I'm not sure how much support we will get with JK for such requests. I've asked them a couple of things a while back and they haven't replied to any of these yet.
At the end, it is just data what the protocol supports. If Pylontech supports it but JK not🤷♂
No, thank you for the videos.
No thank you?
Hopefully they all talk on the network consistently. I have 2 x V14 and 1 x V15 they talk and play nice but every day one of the v14's (the slave unit as the other is master)drops off the network and this causes the DVCC to drop the amount of charge. So yesterday in WA we had a cloudy start when the sun poked through, the JK decided it was going to take a break. So My system was freq trimming my two Fronius AC solar controllers. Even though the Vic MPPT was set to ignore the BMS, it was charging at full rate, and the DVCC just cut back the AC solar to compensate. This has been with JK for nearly 6 weeks now, although I did bring it to their attention a long time ago. I have focused on it now as its the winter months and every solar ray counts. One of the V14 will loose coms for several hours then just come good again. Its not the Coms Board as the V15 is No3 and it doesn't drop coms. If it wasn't for VRM Id probably never have known. I trend the Charge rate to find out.
Ever experienced interface with Rf with two different power supplies from two different sources causing a harmless brief interface resulting in the shut down of both sources 2000 watt inverter and the 2000 watt inverter generator.
So noticed flickering lights before event happening once . Happened another time of different inverters and generator
So I keep power supplies far apart now so rf waves don’t cause a issue. Best wishes
Author of Solar Independent Utility Systems Manual
Dude your winter production equals my summer production.
The last 3 days were very heavy rain and I am nearly flat each day 😭
But your location makes up
For it what a beautiful peaceful place you live in.
Yeah, Gaza, the views you have are incredible. Even at rain!
@@jo8ephthomas Thank you. Yeah even when we're battered by storms it's spectacular. I am a very lucky boy and I forget that.
@@OffGridGarageAustralia Dude sometimes it rains so hard I can't see the bottom of the garden lol.
Andy, if you take the display out of it's plastic case it might fit in the window area on the front of the Gobelpower case. That is how my Apexium DIY box does it.
FYI: When using the JK for 8S/24V and only using Sense Leads #1 & #2 but not #3 & #4, a Temp Sensor error is shown on BMS because the two T3 & T5 temp sensors are missing. JK does not resolve 2 Temp Sensors being used with 8S. You could "deadhead" the sense leads or remove the sense leads from the JST connectors so the Temp Sensors remain available.
Hi Andy, Thank you for the channel. The work you do is valuable. My comment relates to the new JK "Inverter style" BMS. The setting is pre and post charge setting, When do is perform the function. Is it when you switch the bms on or off, or when you close and open the Battery Circuit breaker ?
I extended my 14s NMC 234 Ah Batterie with an Apexium 314 MB31in parallel. I dont use the NMC now in their full range, but who cares. It runs perfect. Communication to the Raspberry is also ok. Only sometimes the Cell voltage is missing from the JK BMS JK-PB2A16S-20P. The line is always unterbrochen in these Victon charts.
Your the only other In the world I seen pointing out Solar power on bright moon nights
I use to show a 15 watt panel lighting a 2 watt 12 volt
But nice
Any good land down there away from people burning and regulations from earning money from hooking up Solar systems ?
If I could own land there wherever it’s most like Florida I would move there immediately
Start my Solar business
We’re lucky to be alive here btw
Unbelievable issues here
This one’s not working out so well
Best wishes
Hi Andy, I would of left the original standoffs and just cut a aluminium plate to size, drilled the holes to the pace bms hole pattern and drilled in the plate the jk bms hole patters and job done.
Would have been another solution, yes.
0:32 Andy, you are very much mistaken, the PV energy production here in the Caribbean winter is excellent
Andy, there is a (new?) JK 3.2 inch Display available. Maybe it will fit.
Two of the JK Inverter BMS I received from JK BMS store have already wire B08 removed on the connector #3, and one that was ordered from Minerals Store on Aliexpress still has the wire, all BMS's are HW version 15. But on the connection scematic they provided on the aliexpress product page it is clearly visible that wire B08 on the connector #3 should not be connected anywere, it is not used.
That's good feedback, thank you.
I'll ask them for advice as it seems we have two standards for these BMS here. Also for the Pace BMS it seems...
I only read this fuse-story a good while back but am not sure if it is true. It kinda make sense though.
Awesome as always!
I don't think it's a good idea to bang by hammer when other electronics are too on the same bench.
Hi Andy. Mounting the dipswitches 180° rotated, changes the logic of the dipswitches. In one position the two pins from one number are connected in the other position not. What connected or not connected means for the number of the pack is determined in the software of the BMS.
Do they have some resistors inside? I always thought these are just simple switches.
@@OffGridGarageAustraliathere are no resistors inside. like you said, just little switches, one for every digit. You can measure them with a simple continuity test.
Greetings from rainy Germany.
Andy i am now confused about the wires on cell 8 as i had a different experience.
Some weeks ago i upgraded 3 batteries from pace to JK just as you did in an earlier video and used the existing cables, all worked fine.
This weekend i have just completed a diy eel stand up case and adapted it to take a JK inverter bms. I had found a wiring diagram from jk which only showed one balance cable on cell 8 positive and a cable on cell 9 positive, despite the supplied cables having an extra cable?
When i started it up, the cell voltages on 8 and 9 were blank in the app. If i connected the spare (supposingly not required) cable to cell 9 negative, all cell voltages worked in the app. The system works well, balances etc. So dont really understand why that extra cable is there, but it is obviously needed.
Full moon charging system!! 💪🏻💪🏻… (to be contiue)
Hi Andy I just checked my off grid PV voltages over night in the full moon, one string as 2.1v and the other was 1.1v, the peak was at 12:38am, have you ever looked at the large image of Victron Venus, it has Node-Red that is great for grabbing the data from all your Victron devices and converting it to a MQTT so you can send it to a MQTT broker and graph the data
I have Home Assistant which does exactly that and connects to all devices I have. Data overload😆
If your work on a battery, remove the busbar between cell eight and nine....
7:55 - The mounting plate could possibly bend? If you attach the cooling plate directly to the case, then the BMS-Board could bend too and there the components could be damaged.
It won't bend once mounted inside the case. It also has this fold at the top and bottom which makes it very rigid. Also. the backside of the BMS is massive. Very hard to bend either.
@@OffGridGarageAustralia - Okay, if it works it is good. See it only as a opinion, from someone watching from far far away. You can see it better.
As I found out, the last wire of connector 2 and the first of conn. 3 are internally connected, on some drawings from JK the first pin on conn. 3 is even named 'NC'.
But I'm surprised to see how easily you switch on the JK BMS with a short press on the button! If I do so on my 150A Inverter-BMS v15, all LEDs light up as long as I press the button and everything is off if I release it. So I have to press several seconds and sometimes I need some tries till it stays really 'on'. Is that a fault or a feature?
It has even switched itself off without any reason once, not the battery but the whole BMS itself!
I really enjoy your channel, I have a question. How do you size a BMS. I do I know which one I need. Is there a formula for getting the correct one for my system?
Blacksmith shop Andy's Garage 😂😂
Yeah, hahaha, I really wish I had more and better tools to work on this metal. A drill, jig saw and file. That's about it.
Hallo Andy,
im getting around 4W from each of my 4,1kWp strings when full moon lines up to them.
Does the system turn on and current flows? I had 34V showing that night as the maximum in HA.
@@OffGridGarageAustralia
Yes.
Last night it was at maximum 0,1A at 23V. The night before 0,1A at 31,6V.
I don't know where the moon was located these nights, but i remember seeing 4W in the past.
But this little power will be self consumed by the charger only, for shure.
BTW, Gobelpower is saying (on the cart page) that your coupon code is expired.
Hello. Can you help me? The luxpower file appeared on the website with updates, but I cannot install it as an update. And I have just this inverter. How to install it?
I don't know the luxpower inverter. You didn't give us any more info about the file and inverter. What does the manual say about FW upgrades? Google it how to run FW updates on luxpower inverters. Seems like lots of videos out there showing the process...
I received a connector which I am guessing is like what you're calling a fuse. When I Googled it was called a shunt. So could they be measuring the voltage drop across the shunt ?
Hi.
My solar system have EPEver 2210AN with 400W solar, now i have planned to update the controller and i have thought EPEver 40A version or Victron 100/50, both cost almost the same.
I have seen alot that people have blown internal fuse from Victron and not sure how they succeeded in that, over voltage what destroys mosfets and fuse goes or what?
Victron should be ok even you have double amount PV wattas, it just able to utilize Max A/Watts.
Plan is also to replace the panels with 2x 450W.
Battery is DIY 12V 560Ah LiFePO4.
Hi Andy sorry me again, one of my 492 subscribers has had a BIG FLASH and blown a hole in the bus bar when he connected the ring lug of the small JK power lead.
Why would it do this? Apart from a dead short I have no clue. And the thought of it scares me from touching mine ever again.
Thanks Andy
Gaz 🏴
You again...
He may had some load already connected or had not followed the start-up and cabling procedure? There is definitely no spark when connecting the BMS as it has no capacitors like an inverter.
Any advice on remotely communicating with JK BMS that have the Bluetooth interface?? I was thinking of using an Android device locally then remote desktopping into it with a Windows 10 Pro PC using the remote app.. Also wondering what your thoughts are on 17 and 18 cell 48vdc battery banks..
Here's a question Andy if you can help me...I was 99% of the way through building my battery with this BMS...What's concerning me is...All without the last red wire connected....I connected the main battery negative to the B- on the BMS and the P- was showing 51v between it and cell 16 positive...I would have expected 0v...More confusing than that is there's 51v between the the small red bms power wire bullet connecter and the main battery positive at cell 16...This is without that wire connected to cell 16 so obviously the bms cannot be powered up at this stage. Any thoughts ? I spoke to a friend of mine and he kindly took his battery partly apart and had the same findings.
It is simple: you follow the instructions to cable this BMS. It needs the last balance cable (B16 in the manual) to be connected to battery positive as well as the ticker positive cable (which is necessary for the current limiter).
The BMS won't turn on without that cable and MOSFETs are off, hence you messaure that 51V across the battery and BMS.
@@OffGridGarageAustralia Thanks Andy...It was a head scratcher as I'd followed everything to the letter up to the point of connecting that last wire....I was double,triple and quadruple second guessing myself but good to know i had it correct. Appreciate everything you do for this community, many thanks. I should mention that it was Garry from Garry's Half baked that helped me with testing his. He did me an absolute solid.
Instead of 3d printing a part why not use the 4.3" display. Use grinder to make opening 192mm x 94mm (around buttons and existing opening) then take screen apart ... take off the rubber gasket ... remove the top half of the flange on that front plate... then reassemble the two parts but sandwiching the box front plate. I've used this on 5 of my XR-04 boxes and they work perfect. Any overcuts will be hidden by the front part of screen.
A grinder is far to aggressiv and will destroy the paint around the cut. At least my grinder does... I would need a milling router or so get the right cut in this material. The Seplos boxes have very thick steel.
@@OffGridGarageAustralia I used a grinder .. any imperfections are concealed by the front plate of the display anyhow, to reduce imperfections I put painters tape over the area and drew lines on the tape so sparks would not damage surrounding paint. My XR-04 boxes were fairly thick steel too. When done it looks like it was meant to be there. Just a thought.. but must be more fun making 3d parts ?
@@rogereldridge8233 I can give it a try with the Seplos front panel. It's fairly thick steel and I have to get a thin cutting wheel for my grinder. Masking tape to protect from the sparks👍👍
Are you sure the hole should be 192 x 94 mm?
According to the manufacturer, the LCD display has mounting dimensions of 129 x 86.9 mm.
Thank you for your videos, good work, very helpful.
I bought on Ali 3 JBD BMS (JBD-UP16S010-L16S-200A-B-R-C) for 48V batt's with 315Ah cells. BMS are working, but not really good. I'm at a loss what to do. The JBD seller response is very poor. I've reported many problems , but have'nt received a usable response to date. Is there still hope for improvement with JBD (firmware). Or do you know anyone who knows this BMS well and can help me, or should I throw the JBD BMS into scrap and buy 3x JK-PB2A16S20P-3.2LCD?
Have you reviewed the Jk bms 2.0 yet
What model is that?
I downloaded the new software 2.0
Hi mate, this is weird. Mine definitely needs both the number 8s as shown in my videos.
With only one cell 8 lead connected I had no voltage shown for cell numbers 8&9 with both connected I show voltage on cells 8&9
Version 15 and it was the last lead on the second plug for cell 8
That is indeed weird. I have the V14.xx here but don't think they have changed anything like this and all of the sudden the V15 needs both cables. I've got this running for a few days now and have no trouble.
I'll do some testing with the V15...
@@OffGridGarageAustralia Good morning mate, I have taken a screenshot of my jks hardware and software versions. I will put it on my community post.
Dear hope you are good, my question is that I have a cell 314ah, and i drilled its andod terminal, the hole goes through on through and liquid came out by moving upside down,
Is the cell is good to use?
Can I seal it by pouring soldering aluminum in the hole?
That's damaged forever and cannot be used any more.
🐸🐸🐸
Hello Berlin!
12:48 Stop right there Andy...this is another concern... the first cable on pin 1 goes where on the JK BMS ??? The second cable goes to cell #1. On the video here you do not have a cable there at all. Does that first cable get connected to ground side??? Very confusing
You can see it right in the video. Cable one is the white one and goes to battery negative.
@05:02
We call it "einen-um-die-Ecke-Schrauber"
Ah, yeah right!😅
Hello you helped me before I'm trying to find your video on charging batteries that have different amp hours in battery bank I need to watch it again can you send me link please
I tested 1 panel 410w get about 5V. Just amps 0 😁
If there is voltage and a circuit, there is also current. It must be something...
How come JK bms app is asking for permision to take pictures and record video? Just started happening today.does anyone know
Moin 👍👍👌
Aber Hallo! 🙋♂️
Like# 23
5th, Paul. Hello🙋♂️
👍👍👍
👍👍👍
Andy , how can get in touch with you , i trying to setup a bib battery bank and i need your guidence an email will be good / thanks
Not quite relevant to this video. I was watching one of your other videos and saw you are using a two pole breaker to disconnect your solar. Can you share the breaker type and mfg you used? What DC voltage and amp rating did you pick and why? And why this approach instead of one of the solar panel rotary disconnect switches? Thanks in advance.
+1 good idea
Andy - you notty boy - remember you are showing your loyal fans how to do stuff - so dont forget safety first. You removed the existing cell monitor wiring WITHOUT labeling the wires with a cell number (also number the cells). So many wires 16+, so easy to get wires crossed over. If you get it wrong, you may toast your BMS (over volts or reverse volts may destroy the cell measuring circuits). As good practice, you should always label your wiring before dismantling - so very easy to get reassembly wrong. SUCK IT AND SEE is bad practice. Just imagine you are assembling a time bomb on your bench - ALWAYS BE VERY CAREFUL - DOUBLE CHECK THEN CHECK AGAIN.
Oh that totally looks like a stock BMS swap 🙄
✌=5 🤣🤣🤣
Whoa, first?? ;)
🥇you did it!
Sometimes it's the silly little things... :)
Why the duck are you doing this on the ground??????
Gobbledygook power... :-) Andy I really do not understand why you are giving air time to this company. Horrible cases and they are using you to fix all their issues? I do not know, maybe you have some kind of deal with them. Anyway, if I was a manufacturer and I had sent battery boxes like these for review, ashamed would be the least I would feel.
I bought cells from them and ordered an odd number of cells so box 9 should have had just 2 cells.. Well only 8 full boxes arrived so I had to contact them and their response was that they only sell by the full 4 cell box forcing me to have to order 2 more cells.. So after a couple weeks I am still waiting on the box of 4 cells with no idea when they will arrive because they don't send you tracking information.. Nowhere on their website do they state that they have to be ordered in lots of 4 and when asked about this they were unclear at best.. I told them they should put this on their website or at least make it so you have to order in groups of 4 cells and they seemed unconcerned.. Not sure if I will ever order from them again, the only other option is direct from China or very high prices but ordering direct requires you to have a US Customs account and $2,500 bond through a bonding agent which also charges a fee..
I think this is part of the DIY project. I don't mind testing their or other companies' products. We have had some great success in the past (NEEY and JK) and they could really improve after getting community feedback.
@@OffGridGarageAustralia Yes I get it, but I do not understand how a company that respects itself sends for review a completely unusable product. Its not like negative advertisement. I don't think that anyone including myself will ever consider anything from them after that.