Support BMS DR-JC03?

[andkirby]

Describe the bug
I'm trying gather all things together for:
Victron MultiPlus 48/5000/70 + Cerbo GX + Battery LiFePO4 with BMS DR-JC03.

I've installed your app, and connected
Cerbo GX-USB <-> USB-RS485 Adapter with 3 pins (A/B/Ground) <-> RS485-RJ-45 on battery

On RJ-45(RS485):
1- RS485B
2- RS485B
3- GND
(I made this according to this manual. It's not so suitable, but didn't find better.)

Am I wrong somewhere?

To Reproduce
Steps to reproduce the behavior:

1. Go to Cerbo GX terminal
2. Install dbus-serialbattery
3. Connect the battery
4. See logs: tail -f /data/log/dbus-serialbattery.ttyUSB0/current
5. See error

ERROR:SerialBattery:ERROR >>> No battery connection at /dev/ttyUSB0

Expected behavior
Logs shall show success connection.

Screenshots
BMS

BMS DR-JC03 Photos

VenusOS (please complete the following information):

• Device type: Cerbo GX
• Firmware Version: 2.92 (latest firmware for 2022-12-09)

Battery/BMS (please complete the following information):

• BMS/Battery type: ??? / LFP
• Cells: 16
• Interface: 2xRJ45-RS485, 1xRJ45-RS232

Additional context

[Louisvdw]

This is not a BMS that is supported by die driver. I cant's find any communication protocol information on their website, so I can't say if it would be possible to add.

[andkirby]

Hi @Louisvdw ,
Thanks for your quick response.

But how these 3 wires to RJ45 (RS495) shall be connected to a battery via RS485/RJ45?
Is there some standard or something?

As the solution 1-A+ / 2-B- / 3-GND does not work, I found this adapter USB-RS485/RJ45
https://www.amazon.com/RS-485-Adapter-Serial-BCBL-01-Communication/dp/B08GLFBTZW

According to the picture: Green-GND, Red-A+, Black-B-.

So, on RJ-45(RS485):

1. GND
2. RS485 A+
3. RS485 B-

Error No battery connection at /dev/ttyUSB0

Full log

@4000000063931ee22762e4b4 INFO:SerialBattery:Starting dbus-serialbattery
@4000000063931ee2276d73d4 INFO:SerialBattery:dbus-serialbattery v0.141
@4000000063931ee227773004 INFO:SerialBattery:Testing LltJbd
@4000000063931ee2386c6794 ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000063931ee238a17d6c INFO:SerialBattery:Testing Ant
@4000000063931ee30df17b1c ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000063931ee30e328b5c ERROR:SerialBattery:>>> ERROR: Incorrect Data
@4000000063931ee30e3d6c84 INFO:SerialBattery:Testing Daly
@4000000063931ee31f34e24c ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000063931ee31f6b2cbc INFO:SerialBattery:Testing Daly
@4000000063931ee33043472c ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000063931ee330843444 INFO:SerialBattery:Testing Jkbms
@4000000063931ee405da67cc ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000063931ee40615bb4c INFO:SerialBattery:Testing Lifepower
@4000000063931ee417b4811c ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000063931ee417e82bac ERROR:SerialBattery:>>> ERROR: Incorrect Data
@4000000063931ee417f3570c INFO:SerialBattery:Testing Renogy
@4000000063931ee429afca84 ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000063931ee429e8050c INFO:SerialBattery:Testing Renogy
@4000000063931ee43b3b0c3c ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000063931ee43b6f1c5c INFO:SerialBattery:Testing Ecs
@4000000063931ee5225d66c4 INFO:SerialBattery:Testing LltJbd
@4000000063931ee532f0d32c ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000063931ee5330541a4 INFO:SerialBattery:Testing Ant
@4000000063931ee607d8db94 ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000063931ee607e7b844 ERROR:SerialBattery:>>> ERROR: Incorrect Data
@4000000063931ee607f1ce4c INFO:SerialBattery:Testing Daly
@4000000063931ee61972bf64 ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000063931ee61982e81c INFO:SerialBattery:Testing Daly
@4000000063931ee62a3e144c ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000063931ee62a4c9724 INFO:SerialBattery:Testing Jkbms
@4000000063931ee63ab5888c ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000063931ee63ac57a94 INFO:SerialBattery:Testing Lifepower
@4000000063931ee70f9d5e2c ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000063931ee70fabd934 ERROR:SerialBattery:>>> ERROR: Incorrect Data
@4000000063931ee70fb589ac INFO:SerialBattery:Testing Renogy
@4000000063931ee72089c3ec ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000063931ee72098892c INFO:SerialBattery:Testing Renogy
@4000000063931ee730f4574c ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000063931ee731036aac INFO:SerialBattery:Testing Ecs
@4000000063931ee816da4dbc INFO:SerialBattery:Testing LltJbd
@4000000063931ee828af2f1c ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000063931ee828c0ced4 INFO:SerialBattery:Testing Ant
@4000000063931ee839a1519c ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000063931ee839b37624 ERROR:SerialBattery:>>> ERROR: Incorrect Data
@4000000063931ee839c21454 INFO:SerialBattery:Testing Daly
@4000000063931ee90ea62cec ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000063931ee90eb6421c INFO:SerialBattery:Testing Daly
@4000000063931ee91f01957c ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000063931ee91f10eb44 INFO:SerialBattery:Testing Jkbms
@4000000063931ee92f935fec ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000063931ee92fa3fdd4 INFO:SerialBattery:Testing Lifepower
@4000000063931eea05b2177c ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000063931eea05c0ffe4 ERROR:SerialBattery:>>> ERROR: Incorrect Data
@4000000063931eea05cc4e6c INFO:SerialBattery:Testing Renogy
@4000000063931eea161a35f4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000063931eea1628e3c4 INFO:SerialBattery:Testing Renogy
@4000000063931eea270bcbd4 ERROR:SerialBattery:>>> ERROR: No reply - returning
@4000000063931eea271f5ba4 INFO:SerialBattery:Testing Ecs
@4000000063931eeb0cf60804 ERROR:SerialBattery:ERROR >>> No battery connection at /dev/ttyUSB0

That's a web page of a similar battery like mine: 512KWH-48V-lifepo4

[Louisvdw]

The wires does not matter if the driver does not talk the language of that battery.
If this battery can do CANbus you might not need the serial battery driver.

[andkirby]

I got no CANbus input, unfortunately.

The wires does not matter

But I have to establish right connection first, right?

[Louisvdw]

Yes, you do need to get the correct wire connection first. But there are no standard for that. You will have to check your battery manual which pins are used.
But even if the correct pins are used and the connection is valid, the driver will not know how to talk to this battery unless it use the same BMS as one of the supported BMS.

[andkirby]

But there are no standard for that.

That's a shame :(

You will have to check your battery manual which pins are used.

No manual from XD battery vendor. :( 🤦

Thanks for this note, L!

[andkirby]

Contacted with XD Battery company. I was told, it can be connected with their battery (w/o programming).
They promised to help to make it work. My hands are itching to see the manual.
I'll bring updates...

[joggl]

Diese Batterie funktioniert mit dem Treiber nicht. Du musst folgende Dinge ausführen. https://we.tl/t-pgNDHMLJ7y (the link for the battery manual, pc software, BIN code , upgrade video)
1.upgrade the battery by the BIN code first.
2.battery connect victron by CAN bus (the RJ45 cables PIN change for CAN)
3.master battery dip 5 and 6 on
4.victron setting pylon working model

[andkirby]

@joggl, thanks for the answer. Why it's not in english (completely)? :-/
What this link about? I see "Introducing portraits". I guess, you added wrong link.

1. Didn't get it. What does "BIN code" mean?
   2,3) Yes, 5 & 6 pins must be up. For some reason it works only via CAN bus which is configured as BMS CAN.

That's the answer from the battery vendor. This manual helped me to connect my battery.

Probably, will add detailed manual later.

[joggl]

Hello andkirby, i am from Germany, i try to write in english. I have a battery with the same BMS from an other battery maker. The program from louis doesn't work with this BMS. In the delivered version of my battery the BMS can not comunicate with victron and I have to install an Update on my battery ( this means bin-code). In the link are the updatefile, a PC-software to bring the update on the battery and choose some settings, a movie who show the way of update and settings and a manual (PDF). I had to go this way and now my Raspberry Pi with venus os comunicate with the battery. Best Regards

[andkirby]

Hello @joggl,

it looks like you did a piece of work!

So, the link either is broken or invalid or not allowed to see from my side. I see the following:

Transfer expired
Sorry, this transfer has expired and is not available any more

I assume, something went wrong... =) Maybe you have another source of this video.

My questions to your comment:

1. Where this update (installed on your battery) is coming from?
2. How to did you install it?
3. Which version do you have now?

BMS can not communicate with victron

4. It somehow communicates with my Cerbo. Does it work via BMS Can on your side?
   I have "Settings > Services > VE.Can port > Can Bus profile" = "CAN-bus BMS (500 kb/s)".

[joggl]

This is the manual of my battery. The update for my battery I get from my seller. I only connect 2 cables on my can-hat (CANH and CANL -> Pin 4+5).

NEW-48V LIFEPO4 BATTERY USER MANUAL.pdf

[joggl]

I don't understand how i can do the Video in GitHub. So i do it this way . Best Regards       

[andkirby]

I don't understand how i can do the Video in GitHub. So i do it this way .

I assume, YouTube would be the best place ;)

[leowinterde]

We started to collect all available information (manuals, firmware version and so on) over here https://github.com/LeoWinterDE/BMS. Feel free commit any new firmware version or guide, thanks.

This is the manual of my battery. The update for my battery I get from my seller. I only connect 2 cables on my can-hat (CANH and CANL -> Pin 4+5). NEW-48V LIFEPO4 BATTERY USER MANUAL.pdf

Hello @joggl,

it looks like you did a piece of work!

So, the link either is broken or invalid or not allowed to see from my side. I see the following:

Transfer expired
Sorry, this transfer has expired and is not available any more

I assume, something went wrong... =) Maybe you have another source of this video.

My questions to your comment:

1. Where this update (installed on your battery) is coming from?
2. How to did you install it?
3. Which version do you have now?

BMS can not communicate with victron

4. It somehow communicates with my Cerbo. Does it work via BMS Can on your side?
   I have "Settings > Services > VE.Can port > Can Bus profile" = "CAN-bus BMS (500 kb/s)".

[ChristophPech]

We started to collect all available information (manuals, firmware version and so on) over here https://github.com/LeoWinterDE/BMS. Feel free commit any new firmware version or guide, thanks.

I'm not allowed to commit directly, but this here seems to be an older version of the protocol: https://www.photovoltaikforum.com/core/attachment/77134-pylon-lfp-battery-communication-protocol-rs485-v2-8-20161216-pdf/

[MarzaBogdan]

We started to collect all available information (manuals, firmware version and so on) over here https://github.com/LeoWinterDE/BMS. Feel free commit any new firmware version or guide, thanks.

This is the manual of my battery. The update for my battery I get from my seller. I only connect 2 cables on my can-hat (CANH and CANL -> Pin 4+5). NEW-48V LIFEPO4 BATTERY USER MANUAL.pdf

Hello @joggl,
it looks like you did a piece of work!
So, the link either is broken or invalid or not allowed to see from my side. I see the following:

Transfer expired
Sorry, this transfer has expired and is not available any more

I assume, something went wrong... =) Maybe you have another source of this video.
My questions to your comment:

1. Where this update (installed on your battery) is coming from?
2. How to did you install it?
3. Which version do you have now?

BMS can not communicate with victron

4. It somehow communicates with my Cerbo. Does it work via BMS Can on your side?
   I have "Settings > Services > VE.Can port > Can Bus profile" = "CAN-bus BMS (500 kb/s)".

Hi. After all of this information i still have a question :) I am using a raspberry pi with venus OS. So this type of bms works only with waveshare can pi hat ? I have a USB -Rs485 adapter and i failed to connect this bms with raspberry pi. So i have to buy a waveshare can pi hat ? The adapter i use right now is the one in the picture, please see the link down below. Thanks.

[https://user-images.githubusercontent.com/127730319/224959954-41155586-4ca1-456b-9dff-6ebe6ba1ebe7.jpg]

[leowinterde]

@MarzaBogdan i have only been able to run it with a pi Hat on the venus os, but technically it should also work with a RS485 USB adapter - but I haven't seen this yet.

[MarzaBogdan]

@MarzaBogdan i have only been able to run it with a pi Hat on the venus os, but technically it should also work with a RS485 USB adapter - but I haven't seen this yet.

I have to install or activate any driver on venus os ?

[leowinterde]

@MarzaBogdan i have only been able to run it with a pi Hat on the venus os, but technically it should also work with a RS485 USB adapter - but I haven't seen this yet.

I have to install or activate any driver on venus os ?

This pi hat from waveshare runs without any additional drivers on venus os.

[MarzaBogdan]

@MarzaBogdan i have only been able to run it with a pi Hat on the venus os, but technically it should also work with a RS485 USB adapter - but I haven't seen this yet.

I have to install or activate any driver on venus os ?

This pi hat from waveshare runs without any additional drivers on venus os.

Ok thanks, I will try again with my rs485 adapter and if it still not working i will buy that pi hat waveshare. The thing about my rs485 adapter is i have only 3 ping A B and GND. On wave share i see H L B A.

Thanks for your quickly response

[joggl]

For me it only works the can hat too. I have to Insert a few words at config.txt. See on waveshare wiki.
https://www.waveshare.com/wiki/RS485_CAN_HAT

[MarzaBogdan]

For me it only works the can hat too. I have to Insert a few words at config.txt. See on waveshare wiki. https://www.waveshare.com/wiki/RS485_CAN_HAT

Yes. It is working for me too. Today i was able to connect the battery to the venus os. Thanks

[christian1980nrw]

@leowinterde
Today i published a script that reads out SOC, voltage and current of a DR-JC03 BMS with the delivered RS485 adapter that came with the battery. I am using Venus OS. Maybe it will help to fully integrate it.
https://github.com/christian1980nrw/DR-JC03-RS485-Switcher/tree/main

Regards Christian

[christian1980nrw]

@mr-manuel Is this similar to the seplos BMS (please have a look at my repo)?

[mr-manuel]

Just take a look at the Seplos driver and you will know.

[christian1980nrw]

@mr-manuel @Louisvdw

Success!

https://user-images.githubusercontent.com/6513794/242433321-1cf3100c-3362-421b-b357-3cc3c7047307.png

You can find the code at: https://github.com/christian1980nrw/DR-JC03-RS485-Switcher

Regards, Christian

[christian1980nrw]

Please take a look at this https://louisvdw.github.io/dbus-serialbattery/general/supported-bms#add-by-opening-a-pull-request

Currently I can't do that as I still need to research and figure out how to use this BMS to get alarms from, charge cycle history and charge current control management (CCCM).
For my own project I don't need these features, but for your software this should be figured out by me or someone else.

But look at my screenshot, the important data is already there, if you like you can integrate my current code.

[mr-manuel]

We will only implement it, if the user request is big enough.

[christian1980nrw]

We will only implement it, if the user request is big enough.

I think this is the battery-request thread with the most acitivities and this BMS is used in the most sold pre-built chinese batterys like
this https://de.aliexpress.com/item/1005004740105433.html or this https://de.aliexpress.com/item/1005004144059100.html .
These batterys will be delivered with a RS485 cable, so every owner has a fitting interface.

But i will watch this thread so that i dont waste my time with not needed further development.

Regards Christian

[kopierschnitte]

It would be really great if your project could support this kind of BMS. I guess that the amount of potential users is rapidly growing because these batteries are quite cheap and easy to integrate. Unfortunately, the out-of-the-box support in Venus is quite limited.

[Orestos]

Same request here

[cpttinkering]

Hi, I needed to have this implemented, so I wrote my own.
See mr-manuel#65
Further info here: https://github.com/cpttinkering/daren-485

[mr-manuel]

The PR was merged and it will available with v1.4.20240806dev.