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adytia-eternal avatar image
adytia-eternal asked

Multiple BMS Poweroad Battery

Hello everyone I am from Indonesia,

Newbie need helps here.

I have a request 3 phase system from my client that I doubt about the BMS communication.

Per phase will be like this :

1 Quattro 15kW

1 SmartSolar RS 450/200

15 Poweroad H-U51100

1 Cerbo GX + GX Touch.

Does anyone can help me about the battery communication wiring?

Since I have 15 batteries per group, thats mean, I have 3 head group of H-U51100. How I connect 3 of them to cerboGX? Since the VE.CAN input only 2 on CerboGX, which is 1 used for SmartSolar and the other 1 used for battery group no.1. So how about battery group 2 & 3?

Hope you guys know my english.

Thank you.

MultiPlus Quattro Inverter Chargercerbo gxMPPT SmartSolar3 phase
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4 Answers
nickdb avatar image
nickdb answered ·

I would suggest you read the 3-phase design manual and follow the necessary training and product manuals.

3 phase systems (as per all systems) share the same batteries, they do not have independent battery packs, so there is only one BMS and one Cerbo for the system.

You would follow Pylon's installation document for wiring large battery banks so they can all communicate with each other.

Batteries also use BMS CAN not VE, which is for victron products.

For a system of that size, if you are new to this, you really need to consult the distributor who would be supplying you, for help.

All the relevant links for the manuals are at the top right of this page.

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adytia-eternal avatar image adytia-eternal commented ·

@nickdb , thx for your answer.

BTW, I just updated by my client, that he's not using a pylontech us5000, but poweroad battery which using pylontech protocol. Thats why they only allow 15 battery per group (Poweroad Battery).

And also, yes, I can use BMS CAN line, but still, its just avail for 2. I'm not sure about Poweroad battery, cause its limitation, maybe I'm just ask my client to use another battery brand which already on victron compatiblity list.

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Matthias Lange - DE avatar image Matthias Lange - DE ♦ adytia-eternal commented ·
You should ask the battery manufacturer about that.

You can connect multiple batteries to the GX device but only one is used for controlling the system.

As already mentioned you also should read the instructions for building bigger systems.

If you connect the Quattros together for a 3-phase system you should have only one big battery.

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maa avatar image
maa answered ·

I think you need the LV-HUB from Pylon, here the install manual

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Duivert NL avatar image Duivert NL commented ·

There not pylontech batteries, so that hub wont work, also you need a hub with pylontech batteries if you have 17 or more

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maa avatar image maa Duivert NL commented ·

ok I had read in adytia-éternel's description that he used 15 US5000, I agree with you for above 16, however he may want to do several stacks it is not prohibited, not useful but not prohibited.

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kevgermany avatar image kevgermany ♦♦ commented ·
Real Pylontechs use Comms between themselves to synchronise loads and charging. Only one cable goes to Victron's GX device.

So we're lacking a lot of info about the battery capability - do they talk to each other, can one assume the role of master, can the master work fully with the GX to control the rest.

Really a question for the battery suppliers. Not for guesswork. It's going to be an expensive mistake if it doesn't work.


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maa avatar image maa kevgermany ♦♦ commented ·

I repeat, adytia-éternel's description that he used 15 US5000 for 1 Quattro per phase so that's 45 US.

To connect so many Pylontech together and send via a single COM link to the Cerbo, only the LV-HUB can do the job, so I suggested that he read the LV documentation and then let him decide what was best for him and above all see if this is compatible with its installation. I don't understand where your "expensive error" problem?

Now if it's not Pylontech that's another debate...

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kevgermany avatar image kevgermany ♦♦ maa commented ·
It's not.
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Duivert NL avatar image Duivert NL maa commented ·
Yes you are right about 45 batteries!


i over looked that, but he isnt using pylontechs, he is using poweroad’s



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maa avatar image
maa answered ·

adytia-eternal you would be well inspired to modify the title of your post if it is not Pylontech ;)

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delf67 avatar image
delf67 answered ·

From Poweroad "easily configured in parallel with maximum 6pcs to achieve 30.24 kWh per tower. And then maximum 7 towers can be connected in parallel" So 42 batteries maximum and you just need 1 BMS.CAN connection, plus termination in the second BMS.CAN port.

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delf67 avatar image delf67 commented ·

Now the OP has added the detail of the battery he intends to use:(POWEROAD H-U51100 )


From Poweroad "● Scalable from 5.32kWh to 63.90kWh power configurations."


So maximum of 12 units in parallel.

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adytia-eternal avatar image adytia-eternal delf67 commented ·

Which one is correct? Calculation or their website?

screenshot-2024-04-28-22-02-21-426-comandroidchrom.jpg

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screenshot-2024-04-28-22-02-21-426-comandroidchrom.jpg (364.1 KiB)
delf67 avatar image delf67 adytia-eternal commented ·

Well the information I posted and the information you posted are from the same page of their website....so take your pick!

Either way it is not the 45 batteries you require. Maybe you should be looking at the POWEROAD H-S48100? Upto 211kWh system?

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