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thomaslederer avatar image
thomaslederer asked

3 - Phase Victron Quattro, 10 x Pylontech US3000C not discharging

Hi there,

I have a problem since the last few days with my installation.

I have a 3 phase system with victron quattros and 10 US 3000c Pylontech batteries connected with an pylontech lv-hub. The system worked fine for about half a year now, but since the last few days, the pylontech batteries do not discharge lower than 40% SOC. In the overview the Pylontech battery is in idle mode and shows on ESS #1: "SOC is low" and on ESS #2: "BatteryLife is active".

I have seen that the active SOC limit indeed is set to those 40% also. But I do not really understand why this happens, as the battery was charged up to 100% by the mppt chargers during the day, as you can see in the attachments.


Picture of the whole installation:

photo-2023-11-07-18-57-55.jpg


Image of the battery stack with lv-hub:

photo-2023-11-07-18-58-06.jpg


Battery in the dashboard overview:

image-07112023-at-1912.jpeg

Battery SOC (last 30 days):

1699381071584.png


Battery SOC (last 7 days):

1699381153038.png

ESS settings:

image-07112023-at-1910.jpeg


Any help would be very appreciated.


Many thanks in advance.

MultiPlus Quattro Inverter Chargerbattery chargingPylontech
photo-2023-11-07-18-57-55.jpg (204.6 KiB)
photo-2023-11-07-18-58-06.jpg (251.7 KiB)
image-07112023-at-1912.jpeg (51.7 KiB)
1699381071584.png (157.5 KiB)
1699381153038.png (125.0 KiB)
image-07112023-at-1910.jpeg (181.1 KiB)
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2 Answers
jp-miata avatar image
jp-miata answered ·

Look at the manual and search for BatterLife, this feature increases the SOC limit, till the battery is once fully charged. I would turn it on ESS -> Mode -> Optimized (without BatteryLife)

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thomaslederer avatar image
thomaslederer answered ·

Ok perfect thanks a lot. And the statement on the dashboard, where #ess1 says, that it has a low SOC can be ignored by me?

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jp-miata avatar image jp-miata commented ·
Yes, it's for you an info, that the battery is not drained longer by the Multiplus, and the MPPT's will charge only the battery. I am not sure if its 5, 10 or 15 percent over min SOC before it switches over in normal operation.
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thomaslederer avatar image thomaslederer jp-miata commented ·
ah ok thanks a lot for your answers
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