I am having trouble with SOC % value ; I have a 48v system and as soon as inverter kicks in on Battery beiing source ; the SOC drops from 100% tp 505 then 25% in few minutes on a 13% load (5KVA system with 200AH Lead acid batteries) with BAttery voltage never below 48.8 V which according to manual should read 75% or higher on low load . I found settings for" Battery to main working Point " at 48v and "Main to battery working Point " at 56V ; Anyone knows what are these settings mean ? Anyone has same issue with SOC as mine ? The inverter does not cutt off even at 10% (Batt volt 47v !!!) ; I think SOC reading algorythm is wrong although Battery type is correct (Flooded) and did not set any user defined setting - even reset to factory default then put battery flood type - no change ! Thanks .