... charging control to recharging timeLED,LCD display, audible and visual alarmBuild-in with big charger RT series ... battery voltage,over load,output short circuit and over- temperatureRestrain surge interference,eliminate noise, ... Current10A10A10A6ADC Voltage12V12V24V24VOvercharge Protection15V15V30V30VDisplayLCDUPS Status, Input/output Voltage and Frequency, Load, AC,battery ,fault, etcOperating ...