What I mean by mixing is say I have two axpert 8k inverter in parallel and I am on sbu setting my load is 9kw and my pv can only bring in 7kw then the inverter wil take 3kw from the battery until the battery volts drops to what it is set in setting 12 then it wil go to grid. So if I am on sub setting and the load is 9kw and my pv bring in 7kw will the inverters take 3kw from grid or will it go into bypass and take all 9kw from the grid.