DESS charging and discharging in the same hour

Q&A and troubleshooting DESS
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1

Hi everyone. I am facing a weird behavior on a DESS three-phase system. Basically, it charges and discharges in the same hour, making it not very cost efficient.

You can in the image attached that for example at 02:00 it both charged and discharged it.

IMG-20250302-WA0000
IMG-20250302-WA00001179×1951 112 KB

The system is configured with optimized without battery life and minimum SoC 10% (It was slightly more than 10% at that hour). Total of 20kWh installed.

Any possible explanation?

Thanks!

2

Nobody?

3

If it gets too close to the low limit SOC, it starts using the grid, and sometimes charging the battery.

The current minimum SOC is used for two things now, to prevent draining the battery lower than it, and to use as minimum SOC for DESS.

Victron needs to make a separate SOC for DESS to prevent this from happening.