... and so on, depending on a size of the inverter.Intelligent LED display,contain display of the Utility,Battery ... on the basic of Saving Mode; Bypass Charge and Power Supply Function; Charge Current are adjustable,it extends ... / 230V Optional,CPU ControlFrequency50Hz / 60Hz Optional,CPU ControlBattery ManagerAutomatic Manager of Battery Charging,extend the Battery LifeBeepingInverter Mode,Beeping Sound ...