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zak avatar image
zak asked

Is a GX device required with a Multiplus II + Pylontech US2000 + MK3?

Hi,

I see many discussions using Gx or Venus. Are these guys a "must have" to be able to run Multi II with US2000 batteries ? I only have the MK3, I was told this is enough.

My equipment:

-Multi II version 5010

-A set of 3 US2000 batteries

-18 PV x300Wp, so 5400Wp on the roof including APSSystems YC600 micro inverters

-Multi II AC in : Grid connected wtih the loads

-Multi II ACout1 : PV panels including the micro inverters (so out in 220C ac)

-Multi II ACout2 : empty

Using the VE config and setting up the ESS assistant, the Multi II has initially started in Inverter mode then after 1 min delay in "Mains On", while the sun was down and batteries fully loaded.

So I guess it started to use the batteries to feed the power but as there was no com, it stops.

Can you please confirm my assumptions ? or explain the reasons why I can not today feed the loads from the energy stored in the batteries?

Any workaround ?

Thank you


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1 Answer
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JohnC answered ·

Hi Zak. I've always assumed that a GX box was a necessity. In Victron's own words: https://www.victronenergy.com/live/battery_compatibility:pylontech_phantom

A system of that size/cost is crying for one/&www anyway..

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