First post so hope is the correct forum.
I have 2x80W solar panels in parallel, a grid tie inverter and have a constant typical load of around 70W.
The grid-tie inverter is a Letrika SMI260, MPPT 21 V-55 V, which produces max 1kWh daily, with a peak of 210W.
What I want is add a battery, but also regulate the power coming out.
If I produce 210W, 70W should go to the grid, the rest should fill the battery.
If I produce 50W, 20W should come from the battery.
If there is no more sun, battery should be drained until desired %.
Is there any way to do this without messing with the panel braker, and with fewer components as possible?
I saw some victron solar MPPT chargers but not sure if they can do this sort of thing.