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Jbd Bms Rs485 address - Guru needed - Solar Assistant

cgccpres98 said:
The most recent Beta version allows multiple JBD bms at once. From SA website:

2022-03-02Beta​

New features:

  • Support for multiple Daly and JBD BMS connections.
Click to expand...
Just tried through a Growatt Rs485 hub and still can only see one JBD at a time, with hub hooked to separate usb on Pi4b i get invalid data with both Jbd's hooked to hub, one at a time works. Anyone have tis working yet?
 
I just got mine working a few minutes ago on a Deye inverter. I use a 4 port USB hub with it's own power supply. I tried a hub without power and it wouldn't work. I'm using a Pizero so I'm not sure if the RPI4 has enough power for the USB devices. I had trouble seeing both Overkill BMS so I emailed SA and received this response:

Can you please click disconnect, then multi-select both USB ports, then click connect again.

Kind regards
SolarAssistant

I then went to the settings tab and disconnected the existing battery. Then selected both USBs and saved and reconnected and it works great now!
 

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Here is what the USB selection under the tab setting...battery looked like for my setup.
 

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Similar response from SA, except I have 4 Gyll and 2 Jbd's, will try usb hub in the morning, thanks Joe.

Update - unpowered hub works, only able to see 4 Gyll's or 2 Jbd's at a time by switching config's, BUT per Pierre will be able to see Mixed batteries in the Future, His response -

Hi Joseph
Good to hear it's working. Mixing batteries will eventually be supported.
 
Last edited:
Curious. With multiple BMS on different ports (6 in my case) how does it display the overall battery SOC? Does it aggregate the configured and remaining AH for each BMS? I have 2 running 230ah and 4 running 280 ah.

This may solve my need for a separate shunt that aggregates all batteries.
 
RoySalisbury said:
Curious. With multiple BMS on different ports (6 in my case) how does it display the overall battery SOC? Does it aggregate the configured and remaining AH for each BMS? I have 2 running 230ah and 4 running 280 ah.

This may solve my need for a separate shunt that aggregates all batteries.
Click to expand...
 

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So it does appear that the batteries are both listed individually and then have the aggregated AH shown for a combined SOC. This is good. And you have two different size batteries.

Thanks!
 
My JBD bms only has the uart port. Is there a way to have a splitter so I can have bluetooth and rs485 going to SA?
 
If it has only has the uart then no, you can either use the Bluetooth or rs458 unfortunately.
 
Probably will not work, my JBD without the RS485 port is missing other components around what would have been the circuitry in that area.
However, I have shared the uart and it has worked.
 
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