Still Considering AC200 MAX or AC300 - but question

Considering either of these units but I have a couple questions:

  1. What is the overhead or self consumption usage on the AC200 MAX and AC300?

  2. On the 200 MAX does the main battery and B230 drain at the same time, or does one drain then the other? If they drain at the same time I probably won’t get to zero often so the battery not waking itself up is not a big deal.

I have the AC200Max and two B230 The batteries drain at the same time and charge from AC200Max solar at the same time That is what I been using for the last 3 months. PS If the batteries get full by the middle of the day, then I turn one battery off and save it (fully charged) for a rainy day. No reason to waste the overhead of the battery.