Technical Support

I would like to set my SunSynk inverter to:

1) charge the battery from solar during the day (it must never charge the battery from the grid), and

2) use some of the power stored in the battery during the day in the evening until it's down to 70 %.

I configured the "System Mode" screen such that — as far as I can tell — it should behave as described above. However, the inverter is never providing power from the battery as the battery always remains fully charged. See my configuration in the screenshots below:

Battery charge: Charge from solar only — never from grid

System 1: Allow battery to discharge down to 70 % starting 18:00 until 7:00 in the morning. Don't charge from grid.

System 2: Use solar to service load and use excess solar power to charge battery.

Below see a snapshot of the power situation at 20:33 in the evening. By this stage the battery should have discharged to some extent, but it's still fully charged.

System flow: Judging by this it seems like the battery is being charged from the grid, which I do not want.

"Spreadsheet" view

See below for the power situation according to the SunSynk Logger app:

Power flow: Both green dots moving to the left, which — once again — seems to indicate battery being charged from grid (strange that it's indicating 0 W load 🤔).

Day chart: Indicating the battery remaining at a constant full charge the whole day (once again, the load number is weird).

I am utterly confused by this system. Kindly indicate what I'm missing and which config changes I should apply in order to have it discharge the battery to 70 % in the evenings.