Using a Sofar HYD 3600ES as an AC coupled storage solution.

[AnthonyEvs]

Hi all,
A newbie t this forum.
i have been looing to get an AC Coupled inverter to cpmplement my 7.5kw solar array,
Ive been offered a used sofar hyd3500ES inverter quite cheaply by a person I know.
I dont want to swap it with my existing pv inverters, so i was thinking, could i use this purely as a inverter / charger and not put any pv into it
And set it to charge from the grid when i am exporting, and of course supply the house load when my pv cant supply enough power.
I do realise sofar make a dedicated ac coupled inverter, but this one is coming in quite cheaply.
Thanks.
Anthony