Its charger for LiFePO4 Battery and brand new designed with power of 3.3kw. the input voltage range is 110VAC-230VAC. the output voltage from 66V-650VDC. the output current is from 6 Amper to 40 Ampere. 3.3kw LiFePO4 charger ws specially desinged by evlithium limited for supplying the electricity for electric vehicle's power battery, on the basis of the national standards for the charger. this product has the advantages of not only high efficiency,small size, high stability, long lifespan but also high protection grade and high reliability and complete protection function. lifepo4 charger has built-in heat-sensing device and can automatic recover through the thermal protection,fully sealed potting process and up to IP67 protection level ensures no causing trouble in any complex environment. the weight of charger is only 6kg.