24 volt, 200 ah for now, with space for more batteries. So far so good and now have the refrigerator running on it full time. This may not be the final location.
I let the system fully charge then shut off power to the Victron and let it run. Plugged in a small room heater to speed the process along. The battery monitor says I got 206 amp hours of capacity by the time the inverter did it's low voltage shutdown. This is exactly what the cells are labelled as, so I'm happy with that.