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aussiedreamland asked

Charging current for mixed Plyontech US2000C & US3000C setup?

Hello everyone,

I think this might be a simple question, but I haven't been able to find answer anywhere yet...

I'm planing on adding a US3000C to my existing 2x US2000C.

At the moment I have the max. charging current set to 50A (25A for each US2000C).

When I add the US3000C, which suggests a nominal charge current of 37A, do I set the charging current to a total of 87A and the three BMS's distribute the 87A accordingly?

Or would this force more than 25A in the US2000C's and due to this I can't set the max. charging current to more than 75A based on the smallest Batterypack?

battery charging
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2 Answers
nickdb avatar image
nickdb answered ·

You have read pylons warranty statement that voids your warranty for mixed models?

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janr-1 answered ·

You mean the statement "The Product has been connected with different type battery modules;"?

Do you have any pointer to a document that this also covers mixed USxxxx installations? In the manual, Pylontech describes how to setup such mixed installations. Therefore, I wonder what "different type" really means. Since it is described in the manual with no warning regarding warranty, I could imagine that USxxxx is one type and, e.g., Force L1 is another type.

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nickdb avatar image nickdb ♦♦ commented ·
It is a little confusing, but that is the clause.

They may well mean, as you say, type = US, UP, force etc.

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janr-1 avatar image janr-1 nickdb ♦♦ commented ·

Since I'm also considering a mixed setup, I just send this question to Pylontech. Let's see what they are really meaning.


From the legal side, I suspect that an action described in the manual with no warning on warranty should not invalidate warranty.

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ralf-ct avatar image ralf-ct janr-1 commented ·
Did Pylontech ever reply? I'm considering adding a US2000C to my US3000C, making the US3000C the master (feeding a 48V 3000 MPII inverter).
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nickdb avatar image nickdb ♦♦ ralf-ct commented ·

The current (updated) operations manual for the battery is available on their website.


Compatible with the US2000C, US3000, and US2000.*

Mixture using master battery priority: US3000C>US2000C>US3000>US2000

For same type of module always use the latest production unit as master.

*Mixture using battery deployment option:

Master battery(1st) US3000C/US2000C

Slave 2nd~8th US3000C/US2000C/US3000/US2000

Slave 9th~16thUS3000C/US2000C




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