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carvari avatar image
carvari asked

Doubt about configuration after adding a new Pylontech battery to my system

Hi all.

My system is:

- 2 Victron Multiplus 48-5000-70 working in parallel

- 1 SmartSolar charge controller MPPT 250 100 - Tr VE.Can

- 15 SunPower panels 325 Wp

- 1 Color Control GX

- 4 Pylontech batteries US2000 2.4 kWh 48V

I want to add to the system a couple of US2000 batteries more. I have seen in the forum and in youtube videos the process to add the new batteries and it's clear for me (and seems easy to do)

Now, my doubt: Do i need to do some kind of configuration in the system after adding the new batteries? Or the inverters and charge controller notice automatically that the battery power have been increased?

In all the post and videos I have seen about adding new batteries, nobody talks about the configuration of the system, just about the balance of the batteries and the use of one of the new batteries as the master one.

I hope someone can answer my question.

Thanks in advance.

Best Regards.

Lithium Battery
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1 Answer
Alexandra avatar image
Alexandra answered ·

@carvari

New battery must be the master - it is on the Pylon manual.

On the gx there is nothing to do in terms of config. Those settings will update on their own. However you do need to check that it is reporting all of the units. that the CCL and DCL are correct for the number of batteries installed.

On the inverters themselves ideally in the battery monitor you would need to update the installed AH there. Especially if you are using ESS

The other thing is make sure they are all charged before combining them, or at least at the same SOC/voltage. There will be others who say they sort themselves out, however it is just best practice anyway. I prefer to make them all 100% before combining.


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carvari avatar image carvari commented ·

Hi @Alexandra

First, thank you so much for your response.

My system is connected to the external grid, but is using it as a generator, I mean, the system only interacts with the grid when the battery level is under 15% (in this case, the inverters charge the batteries from the grid until 30% and stops consuming the grid. The system never export power to the external grid).

What would happen if I did not update the inverters? My problem is that the company who did my installation is asking me a lot of money for the addition of the new batteries (that I think is a very simple process, so I would like to do it by myself). After installing the new batteries, could I update the inverters by myself? What would I need to do this update?

Thank you again.

Best regards.



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