Hi, As you can see from the attached graph SOC dropped from 90% to 7% in the span of 2-3 days. The system has been up and running since June and nothing like this have happened before. The consumption has been more or less constant for a long time (25W) and the only thing that draws power directly from the battery is the CCGX. Could this drop be a result of some “maintenance” routine initiated from the CCGX or the BYD BMU/BMS? The system consists of the following components: •Color Control GX •MultiPlus-II 48/5000/70-48 •BYD B-Box Pro 7.5 •SmartSolar Charger MPPT 250/60 • Regards Sveinung