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I Have a Multiplus Quattro 5000, transformer based.
I have a 450/100 mppt connected, ESS is set up.
My SOC is set to go down to 80%
My problem:
When battery is full to 80% solar gives perfect and all it can.
When it goes under the 80% it switches to grid, which is right, but then the PV drops to about 800w and does not pick up at all. It goes to 4kw the pv.
If i set the 80% lower, then the pv picks up to about 4kw again.
What batteries are these and how are they connected?
ESS has a hysterisis of about 3%, so if your minimum is 80%, ESS will only stop at 83%, so if your batteries want less PV than is available, it will only supply what the battery needs and loads will come from grid until 83%. You will see the remote console reporting ESS1. If you are using batterylife, your active limit may be above 80% so it will take even longer. The system will report ESS1 and ESS2 states.
