I have 200Ah of lithium batteries monitored by a BMV712. From fully charged batteries the only draw on the system is a fridge (I have turned everything else off) which draws about 3Ah. Overnight the SOC has dropped to 17% with a voltage of 13.3v. This situation happens consistently when I have been using the system in the past. I have reviewed my settings but perhaps I am still missing something there. Do you know of a reason why the SOC drops so quickly with very little load on the system?