Hi, I have 8 batteries US2000C and in this period I notice a very different level of SOC: Battery 1 and 8 are new and have firmware v3.0: and battery 7 and others have firmware v2.5: The cells voltage are the same but the SOC and Coulomb are different. Since the voltage level of the batteries and cells is the same I'm not worried but I would like to be sure Someone can tell me if this difference is a big problem and if the 12% of SOC can danger the battery? Thank you