Quattro limiting charging when addtl chargers are on

DIY
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1

SYSTEM;
One 12/5000 230v quattro
1840Ah of Lithium
Four MPPTs
Two IP43 12/50Smart Chargers

The quattro will charge at full rated capacity but when smart chargers are turned on the Quattro limits its own input current to the battery bank to maintain 200-ish amps

The goal is 200 amps from the Quattro when on generator charging and an additional 100amps from the additional smart chargers. For a total of 300A.

If the quattro starts charging first the smart chargers limit their current to 0A. If the smart chargers start charging first the quattro only adds and addtl 80-90A of charge in bulk when the SOC is 60%

What am I missing???

Thanks

2

What battery is this? Is it managed ie sending a charge current limit? If so, what limit has it set from the BMS.

3

These are Epoch 460Ah, each has a max charge amperage of 230Ah so a theoretical 920Ah capacity. The batteries’ BMSs are not connected to the system.

4

What a battery actually needs to charge will vary. Do you have DVCC enabled on the GX and any limits enabled there?

5

I do and I have the charge limit set to 400A

6

Then the system won’t be limiting automatically, it may just be that 200A is all the battery wants to pull. Not easy to diagnose this remotely.
Chargers are only coordinated via DVCC in the GX, so if you aren’t sending a CCL via a connected BMS, aren’t limiting it via settings, then it doesn’t seem to be an external control limitation.

7

That is what I thought re: the communication. I feel like my setting are off elsewhere. The ip43 chargers recognize the current charge state and indicate it on the app correctly however they will not add supplemental current to the “effort” also, when I power cycle them and they do grab and charge, they will output the full 50A,so 100A total but the Quattro immediately limits its charge output.

8

I have run the batteries down to <60% SOC so in theory they should be wanting to take the full charge potential