why i call Li fussy

pianotuna wrote:
time2roll,

Yes the bms keeps the batteries in balance--but what if a large load draws more than the rating on one of the bms of a 3 x 100 amp-hour bank? Potentially that could shut down one battery and then the other two might over load as well? I am just speculating.

Yes of course. You would not build something where it was ordinary to open a fuse any more than overload a BMS. This would generally only happen during a fault in which you would want to cut power.

I read about plenty of large off-grid home systems and this is not an issue.

With all the power you seem to be contemplating I will suggest to ebay that 12v inverter and go 24 or 48 volts.