We have 3 206 AH LFPs. According to my Victron BMV, our deepest discharge was 559Ah.
However, we did encounter a battery shut down once. But we were boondocking in the midst of Ponderosa Pines (very tall trees) and not getting a full charge. Plus we have a residential fridge that draws 120Ah daily. Admittedly, I should have paid more attention to the battery voltage before going to bed (and I could have turned off the fridge breaker).
Anyway, I now think the battery shut down feature of the LFPs is nice to have.
However, there is also a "Catch 22". Since we wouldn't get sunlight on the solar panels until about 9AM (and no coffee), the generator wouldn't charge the batteries since the inverter/charger was also down. So we had to jump the LFPs with the truck battery to "wake" them up.
Bill & Linda, 2019 Ram Laramie 3500 dually 4x4 diesel, Hensley BD5 hitch, 2022 Grand Design Solitude 378MBS, 1600 watts solar, Victron 150/100 MPPT controller, GoPower 3kw inverter/charger, 5 SOK 206AH LFP batteries for 1030 ah