... open interface design with strong communication function, RS485, or RS232 (10) automatic battery management and protection, with ... Current sharing imbalance≤ ± 3%Cooling methodSelf-cooking, or forced cooling with fanProtocalRS485, RS232Accoustic noise<50dBProtection Multi- ... protectionMulti-protection including input over or under-voltage, output over or under-voltage, over-temperature, reverse ...