this is known and is not the intent.
the intent is to have some off the grid equipment that chews a butt load of power but is intermittent in use. power tools, dryer, 3d printer etc.... these are put in a shed that is not connected to the house via physical means including power.
also I don't want to run these on the mains as they are too expensive.
lastly I want to make a backyard solar hut to power some items for gardening so the battery and inverter will be portable.
having said all that this is not a small weekend thing I have been working on it has taken me a lot of time researching every aspect including shut offs, cooling, and secondary sources of power (hence mains IN not out