The ETL listed to UL 458 standards AIMS 3000 Watt pure sine inverter charger has surpassed the ETL requirements. This inverter 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 92 Percent. It is unique as the inverter will bypass 50 Amps 120 Volt or 240 Volt and outputs 120, ideal for RVs, work trucks, food trucks and boats. It is packed with unique features and it is one of the most advanced inverter chargers on the market today. This inverter also 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 powerful battery charger is capable of 12 Volt at 100 Ampere, and with power factor corrected, it uses 20 to 30 Percent less energy from AC input than a standard charger, avoiding nuisance breaker trips or generator overloads. In response to the increasing demand of more advance battery charging, this model is equipped with Battery Temperature Sensing for increased charging precision. The overloads capacity is 300 Percent of continuous output for up to 20 seconds to reliably support tools and equipment longer.