... automatic and silent operation Rack Tower design Automatically charging LED,LCD Display detailsFull automatic and silent operationRack Tower designAutomatically chargingBuilt- ... waveSwitch timeStandard 2~4ms Typical 6msCurrentCharge Current10A10A10A6ADC Voltage12V12V24V24VOvercharge Protection15V15V30V30VDisplayLCDUPS Status, Input/output Voltage and Frequency, Load, AC,battery ,fault, etcOperating ...