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Josep morancho avatar image
Josep morancho asked

2 battery banks support?

Are there plans that Cerbo supports 2 diferent lifepo4 battery banks with their own bms every bank?

Thanks

cerbo gx
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2 Answers
Guy Stewart (Victron Community Manager) avatar image
Guy Stewart (Victron Community Manager) answered ·

Hi @Josep morancho,

We are watching this space, Matthijs gave quite an interesting insight some time ago about how this is best handled (but please keep in mind this was several years ago).

We have just recently ventured for the first time into allowing for multiple Victron Lynx Smart BMS - https://www.victronenergy.com/media/pg/Lynx_Smart_BMS/en/paralleling-lynx-smart-bmses.html

There is nothing else to announce at this stage, but as we add support for larger and larger systems, the market demand to support multiple BMS increases as well.

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Josep morancho avatar image Josep morancho commented ·
Thanks Guy. Unfortunately Lynx Smat BMS only supports Victron batteries.
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sesshoumaru avatar image sesshoumaru commented ·

Interessting. I have two Pylontech Towers with 8 batteries each.

It would be cool instead of logically making them into one 16 batteries "block" to have two "blocks" which are independenly managed, having failover redudancy and the like. Maybe even a third tower in the future without the rather fluky LV-Hub.

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nickdb avatar image
nickdb answered ·

This has been discussed a few times previously.

Short answer is no, the trend is for battery manufacturers to support cascading their BMS's.

The cerbo allows multiple to be connected, but only one can be selected to manage the system, that is unlikely to change.


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sesshoumaru avatar image sesshoumaru commented ·
So we need a generic master BMS upstream to Cerbo and downstream the capabilities to work with multiple different vendor BMS's. Its only software, but you need to be an expert to write it. As standardization is ongoing, time will tell what will be the result.
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nickdb avatar image nickdb ♦♦ sesshoumaru commented ·
There already are software aggregators that some members use.
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sesshoumaru avatar image sesshoumaru nickdb ♦♦ commented ·
Cool, any names/links? Or randomly friggled software?
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nickdb avatar image nickdb ♦♦ sesshoumaru commented ·

If you do some searching on the community you will find some references.

This was one that I remember:

https://community.victronenergy.com/questions/260143/battery-aggregator.html

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sesshoumaru avatar image sesshoumaru nickdb ♦♦ commented ·

Thanks, something to play around with on my play-ground :)

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Josep morancho avatar image Josep morancho commented ·
I am going to add a Fronius PV inverter in the AC-out of my Multiplus II off-grid system as I will install an aerotermia device for heating and SHW.


I have been told that the new Hybrid Fronius PV inverter supports a battery bank. One solution could be to install the second battery bank (DIY battery bank brcause Pylontech is more expensive), as I need more power storage to manage load requirements during the night.

Would this work?

Thankd


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