What is the minimum battery bank size for 48v split phase multiplus 2?

Looked through the documentation, and I’m not sure where to find what the minimum battery bank size would be for a split phase installation of two multiplus 2 48v 3000va 35a system.

I’m sure there is recommended, but this system would be running at a max of 3000-4000 watts of PV and 12 amps of AC output(@240v). No grid input in the design as of now, and direct PV to load is what is what we’re shooting for most of the time if the units can provide it.

Any design recommendations based on this sparse info are welcome, of course.

*** found it in the manual once the multiplus 2 arrived. Page 13 of the manual lists for the 48v/3000/35, the recommended battery bank is 100-400ah. Two units paralleled, I’d guess that should be 200-800ah.