This 600 watt pure sine inverter charger ETL listed and conforms to UL 458 standards, is a combination of an inverter, battery charger and AC auto-transfer switch into one complete system with a peak DC and AC conversion efficiency of 80 . It is packed with unique features and it is one of the most advanced inverter chargers in the market today. It features power factor corrected, sophisticated multi-stage charging and pure sine wave output with unprecedentedly high surge capability to meet demanding power needs of inductive loads without endangering the equipment. The AC/Battery priority and auto generator start functionality make it suitable to work in either backup power or renewable energy applications. When customized to Battery priority mode via a DIP switch, the inverter will extract maximum power from external sources and renewable energy systems, with only minimal battery cycles being required. The overloads capacity is 300 of continuous output for up to 20 seconds to reliably support tools and equipment longer. In AC priority mode, when utility AC power cuts off, the transfer relay is de-energized and the load is automatically transferred to the inverter output. Once the qualified AC utility is restored, the relay is energized and the load is automatically transferred to AC utility. When switching to battery priority mode via the DIP switch, the inverter will extract power from external power sources in renewable energy systems and a minimal cycle of the battery will be required. With the availability of the auto generator start, an electrical generator can be integrated into the system as a backup and started when the battery voltage goes low. Features: Continuous Output Power: 600 WattsSurge Rating: 1800 Watts (20 Seconds)Output Waveform: Pure Sine/Same as input (Bypass Mode)Output Voltage: 120VacNominal Efficiency: 80 (Peak)Line Mode Efficiency: >95 Output Frequency: 50Hz 0.3Hz / 60Hz 0.3HzTypical Transfer Time: 10ms (MaxTHD: <10 Nominal Input Voltage: 12.0VdcMinimum Start Voltage: 10.0VdcLow Battery Alarm: 10.5Vdc-11.0VdcLow Battery Trip: 10.0Vdc-10.5VdcHigh Voltage Alarm: 16.0VdcLow Battery Voltage Restart: 13.3VdcLow Batter Voltage Recover: 13.0VdcIdle Consumption: <25W depending on search modeOutput Voltage: Depends on battery TypeCharger Rate: 20AOver Charge Protection Shutdown: 15.7VSelectable Charge setting based on battery typeAdjustable charge current off-20 -100 Four Stage Smart ChargerBypass 7ampsLow voltage trip: 80\90V +/-4 Low voltage trip: 90\100V +/-4 High voltage trip: 140V +/-4 High voltage re engage: 135V +/-4 Max input AC voltage: 150Unit Weight: 18 lbs.Unit Size L x W x H: 14.75 x 7 x 5.5 inchesAC Input CableGFCI outletConformal Coated for Marine ApplicationsMulti Stage Smart Charger 20 Amp charges GEL, Lead, AGM, LithiumRemote Panel AvailableAuto Frequency Detect From AC InputLess than 10msec Typical Transfer TimeSelectable 25W power save mode (hibernation)7 Battery Type Settings for ChargerAutomatic transfer switch.