Problems with JK Inverter BMS and SunSynk (Deye) Inverter | Request Force Charge

A bug in firmware V15.17 on the JK Inverter BMS can cause your battery to be Force Charged if the 'wrong' CAN protocol us set. I say 'wrong' protocol, but there is a Deye CAN protocol, however if you use this for communication to a ‪@sunsynk‬ (Deye) Inverter, this 'Force Charge' will happen.
If the 001: Deye Low Voltage Hybrid Inverter CAN Protocol is selected in the BMS, this will enable the Request Force Charge function on the Inverter, and your battery will be charged from the grid (if no solar power is available) and won't be allowed to discharge under normal conditions. If grid failure occurs, battery power will be used as normal.
It seems like for everything to function as normal, the 002: PYLON-Low-voltage-V1.2 CAN protocol needs to be selected.
Make sure you do all of your own testing when making changes as not all functions have been checked / tested using Firmware 15.17.
I am using Hardware Version 15 of the JK Inverter BMS.
Firmware Version 15.11 did not have this 'Force Charge' problem, but it seemed to have an issue when multiple batteries (BMS's) are used in parallel, the SOC would not be aggregated and reported to the Inverter correctly.
⭐️⭐️⭐️ OTHER VIDEOS ⭐️⭐️⭐️
🧰 Testing Limits • Testing limits of JK I...
🧰 Hot to connect JK BMS to SunSynk Inverter • Connect JK BMS to SunS...
🧰 How to Upgrade firmware on JK BMS • How to Update Firmware...
🧰 How to downgrade firmware on JK BMS • How to Downgrade firmw...
🧰 Review of the JK Inverter BMS • New JK Inverter BMS Re...
🧰 Review of the original JK BMS • New JK BMS and SCREEN ...
🧰 JK Screens compared • JK BMS Screen Comparis...
If you want to read other reviews or buy one of the other style JK BMS's, here is an option 👉 amzn.to/3yy7lAH (make sure to select the correct model that you need)
My Other Socials 😁 👉 linktr.ee/gran...
================================================
💰💰💰 Support for the Channel 💰💰💰
================================================
If you wish to support the channel, please consider using any of the methods below (Any support will be VERY much appreciated):
⭐️ Use Super Thanks on KZbin, next to the like button
⭐️ Patreon - / grantburton
⭐️ Pay Pal - paypal.me/gran...
================================================
✅✅✅ 2024 GEAR ✅✅✅
📷 Camera - Sony A6400 amzn.to/2ErIC5s
🔭 Lens - Sony 18 - 105mm f/4 G OSS amzn.to/3hWwqri
🔭 Lens: Sigma 16mm f/1.4 amzn.to/2ZZeS7J
🔭 Lens: Sigma 30mm f/1.4 amzn.to/2HJcWd7
🎙 Mic: RODE NTG5 amzn.to/361R4nx
🎙 Microphone - RODE Wireless GO II amzn.to/2YZ9PX0
🎙 Microphone - RODE Video Mic Pro+ amzn.to/3jsk7o7
🎧 Audio Recorder: Zoom F6 amzn.to/2HeVGwb
💻 MacBook Pro 16 inch amzn.to/2GlCMTU
🎧 Headphones: BeyerDynamic DT770 Pro (80 Ohm) amzn.to/33kurc9
Soundtracks from Epidemic Sound (Referral link below)
www.epidemicso...
Please help support the channel by purchasing through my Amazon Affiliate links above. When you do, I earn a small commission which helps keep the channel going and you don't pay anything extra.
‪@OffGridGarageAustralia‬ Andy's channel on KZbin also has a lot of good information about these JK BMS units.
#bms #BurtonBuilds #offgrid
Burton Builds
S07E09

[@eriklefevre5490]

Thank you for your videos. I have just received firmware V15.23 from JK support. The Deye protocol issue is solved in this version. I have just updated the master with this version. It seems to be working fine now. If all ok tomorrow iw wil upgrade the slave batteries and report on results here if you want. The newest BMS i had was on Version V15.19 this version was working but Deye protocol was not fixed yet.

[@GrantBurton]

Hi Erik, thanks for letting us know. Yes, please let us know how the updates to the Master / Slave batteries turn out. I don't see anything later than 15.17 on the JK website (yet). Any chance you could email firmware V15.23 file to me?

[@eriklefevre5490]

@@GrantBurton I have sent you the file. Just now. It is the mail from JK forwarded to you. Subject: FW: JKBMS-PBXX-V15.23

[@GrantBurton]

Thanks very much... I have received it. I'll try it later in the week.

[@eriklefevre5490]

@@GrantBurton The SOC calculation is not working when using Deye protocol V15.23. I have reported this to JK. For now i am back on Pylontech protocol. (caculator works ) I have done update on all BMS to version V15.23 also now. But this did not help Soc calculator.

[@PhilippeCJR]

@@eriklefevre5490 any news up a newer revision that fixes the soc for Deye? I am ordering a JK200A bms soon. Do we use CAN and CANbus port in the Deye?

[@4664346]

It works!!! So thankful! Finally I dont neet to switch it off manually!

[@GrantBurton]

You're welcome. There is an updated firmware version which fixes this error, and a few others. Latest firmware is v15.30. There are also a few more test videos on the channel if you are interested.

[@towijt3047]

Hello, do you use new version 15.27?

[@GrantBurton]

Hi, I just updated the firmware on both BMS’s to 15.27 yesterday, so will see how it performs over the next couple of days. So far, it seems to be working like normal.

[@PhilippeCJR]

@@GrantBurton keep us posted please ! Would love a new video with the results/opinion :)

[@GrantBurton]

@@PhilippeCJR I'll see what I can come up with. 👍

[@blacko3539]

I didn't think you could make the Sunsynk only charge batteries from solar?

[@GrantBurton]

You can… in Settings > System Mode > System 2 > make sure the check box for ‘Priority Load’ is ticked . Also make sure in System 1 settings, none of the ‘Grid’ check boxes are ticked… this way it will only charge using excess solar power and won’t be allowed to charge from the grid at all (unless the Force Charge Request is active). It will use all the solar power available to cover the load, and if there is excess solar available, it uses this to charge the battery. If you want Solar power to first charge the battery, and only use excess solar to cover loads, then make sure the ‘Priority Load’ check box is not ticket. Also, in the Battery > Batt Charge menu, make sure the Grid Charge box is not ticked, like I showed at 02:32 and it won’t charge from the grid. Hope this helps.

[@GPR_gprhellas]

Thank you for your reference to the video, this is still how my batteries are connected to my DEYE INVERTER till now, waiting for the new firmware update from JK to fix this issue.

[@GrantBurton]

Hi George, it’s a pleasure. Both of mine running 15.17 and using the PYLON protocol and so far seems to be running well.

[@eriklefevre5490]

Deye protocol issue is fixed in version V15.23

[@PhilippeCJR]

@@GrantBurton Can you test V15.23 ? should be fixed :)

[@GrantBurton]

​@@PhilippeCJR I still need to update to 15.23 and see how it performs, but I haven't done that yet. Have you updated to 15.23?

[@shitalscookingchannel1854]

15.24 is released.is it working well? Or recommended to downgrade to 15.11?

[@davespages]

5:29 i have used grid import limit to completely eradicate grid usgae. I set import limiter on my sunsynk to 0watts. It worked, it stopped all grid import. But it messed with the mppts, i found it forced the mppt outputs to randomly drop to zero watts when the sun is shining and take 30-60seconds to recover. This bug might be specific to the 8kw sunsynk and using microinverter option for input from other inverters. Also using sunsynk batteries so no JK bms issues for me. 7:46 Sunsynk have an "activate" option in battery settings for deeply discharged batteries. That might initiate the force charge.

[@gregorysheares6514]

Good video Grant, hopefully will help others out there with this issue.

[@GrantBurton]

Thanks very much 😊 new video out tomorrow again.

[@kindzaz]

This solved issue. Thank you!

[@GrantBurton]

Thats good news... you're welcome 👍

[@PhilippeCJR]

Lets say I like to use the battery from 10% to 100%. Should be possible, 2.7v to 3.50v for example. Is this even possible with can-pylon protocol? Or better switch to Vbatt mode? Any negative sides to using Vbatt mode instead of lithium in the Deye?

[@GrantBurton]

Hi Philippe, voltage is not a good way to measure / monitor state of charge of a lithium battery so it would be better to have the battery communicating with the inverter so that the BMS can report the battery state of charge to the Inverter, with the Inverter setup to allow the battery to drain down to whatever SOC you would like to set.

[@appalachianmoonshiner7084]

The same problem issue with my jkbms after protokol was change everything working great thank U ❤🎉

[@GrantBurton]

You're welcome! New JK Inverter BMS test video comes out later today.

[@riaan7836]

sunsynk have lots software bugs..just have to fiddile

[@GrantBurton]

Hi Riaan, thanks for the info, hopefully they are able to iron things out as time goes by.

[@kennyrodg]

Thanks Grant

[@GrantBurton]

It's a pleasure.

[@Codename_47]

Thank you for this great video Grant ! You solve my problem with V15.17 of firmware this awful force charge is in the history already ! Greetings from Bulgaria !

[@GrantBurton]

You're welcome. Version 15.27 seems to have corrected this Force Charge issue when the Deye CAN protocol is used.

[@youssefg3447]

@@GrantBurtonhave you tested it a bit yet? No other problems? Andy said that there are problems and he uses the 15.24 but maybe the problems are correlated to his vistrons

[@yu.diachenko7889]

I have this bms. Firmware 15.17. I have an inverter DEYE 6kv. I have not connected it yet. Does the problem arise only when in parallel with another BMS? To connect the battery to the inverter via CAN, do I need to select pylontech mode in the parameters?

[@yu.diachenko7889]

OO I found a video where you talk about connecting one bms to an inverter. Do you have somewhere where I can see the settings of this BMS? I have EVE 105an 16 cells, but I want to configure them, but I can't find any guides((

[@GrantBurton]

Hi, the Request Force Charge problem will happen if there is a single battery being used, or if multiple batteries are connected in parallel. It appears to be the Master BMS sending the Force Charge request to the Inverter. Yes, to get around the Force Charge request, you need to select the CAN protocol 002:PYLON-Low-voltage-V1.2 as this seems to be working. I have not tested all of the functions extensively but many people are reporting that the PYLON protocol is working. I have heard from another viewer that a later version of the firmware is available but it has not been released on the JK website yet (or at least not that I could find).

[@Mylifelovingit]

Sometimes upgrading software is not always a good idea

[@GrantBurton]

Yeah, It seems to happen with a few different products… one bug gets fixed and another appears.

[@adityabaradia3675]

Yes, I've also downgraded the BMS firmware to 15.11 for this same issue..

[@adon8672]

​@@GrantBurtonwhat particular improvement did this troublesome firmware bring?

[@GrantBurton]

​@@adon8672 Previously using V15.11 it seemed like it was only reporting the Master BMS SOC to the Inverter, and not taking into account the SOC of any other batteries in parallel. With V15.17, when using two batteries (BMS's) in parallel, it's now reporting to the inverter the average SOC taking into account both Master and Slave battery packs. Other than the CAN protocol 001:Deye Force Charge issue when plugged into a SunSynk / Deye inverter, it seem to be running fine. I haven't done extensive testing of every single function and feature using V15.17, but nothing else has jumped out as being problematic.

[@adon8672]

@@GrantBurtonI see. That means the update is positive overall. thanks a lot for prompt reply.

[@5230911]

Thanks a lot! So much help in my work!

[@GrantBurton]

You’re welcome, firmware version 15.27 fixes this issue.

[@adityabaradia3675]

Very informative video, thanks 👍

[@GrantBurton]

Thanks, it’s a pleasure 👍

[@adityabaradia3675]

​@@GrantBurton hello sir, can you please help me 🙏 That request force charge issue has been solved now, New issue is, In battery mode set to lithium, battery goes to 100% SoC (sometimes even Stops before 100 or 90) With Solar and grid available, Then it starts draining, by evening it comes down to around 85% SoC, although I have Extra solar production , which fullfills the loads requirements and then exported to the grid.. And when it's on "percentage mode" Battery goes till 100% and stays there throughout the day, but the SoC difference in deye and bms app is very huge. Please help 🙏 Thanks in advance

[@GrantBurton]

@@adityabaradia3675 Are you meaning AGM% mode? When using Lithium batteries, SOC when using 'percentage mode' on the Inverter probably won't be accurate (neither will SOC using the 'voltage' setting be accurate)... It might be accurate when the battery is fully charged, but unlikely to be accurate as the battery discharges. To get the most accurate SOC over the range of the battery, you'll need to use the 'Lithium' battery type setting on the Inverter, and the battery communication needs to be working (possibly using CAN) so the BMS can report SOC to the Inverter. What hardware version do you have and what firmware version are you running on the BMS? What CAN protocol do you have set in the BMS? Do you have batteries (BMS's) connected in Parallel?

[@adityabaradia3675]

@@GrantBurton Thanks sir for the reply.. I am talking about battery mode in deye settings, i.e. lithium mode, percentage mode, voltage mode, no battery mode. Right now I've shifted back to lithium mode.. working fine with pylon protocol, tomorrow will check that draining issue in presence on sunlight.. Some Details - Cell- Svolt company 106 ah Jk bms - 150 amp. Hardware - V15 Firmware - Initially - 15.17 Currently - 15.11 Protocol - Initially - pylon Then - deye Today shifted to pylon. No parallel BMS/batteries. Thanks 🙏

[@GrantBurton]

@@adityabaradia3675 Let us know what happens. What are your settings for Vol. Cell RCV, RCV Time, Vol. Cell RFV, RFV Time and SOC-100% Volt?

[@kennyrodg]

Here's a thought....Mine was on 15-10 out of the box so i updated to 15-11 ( Thanks for the "how to" btw) ....Should we now move to 15-17 and use the Pylontech protocol ? Hmmm, decisions decisions lol.

[@GrantBurton]

I'm currently on 15.17 using the 002:PYLON CAN protocol and all seems to be working well. The SOC calculation when using two batteries in parallel wasn't correct on v15.11 but is working on v15.17.

[@kennyrodg]

@@GrantBurton I think i'll upgrade to 15-17 then and see how we get on. I'll report back with any findings. Thanks Grant.

[@GrantBurton]

@@kennyrodg Thanks.