The Dynamite? Passport? Ultra Duo battery charger represents the pinnacle of premium, high-performance chargers. The one-of-a-kind Ultra Duo is the only 400W (200W x2) charger on the market with an internal high-capacity (500W) AC power supply. Now extremely fast charge times are possible thanks to the ability to charge at higher C rates, even on AC power! With dual 200W output capability, the Ultra Duo can charge low-to-medium capacity 3C Li-Po batteries in half the time it takes lower wattage/amperage chargers. In addition, the Ultra Duo resides within the family of Dynamite Passport chargers, meaning you get the full gamut of charging features, including the ability to charge virtually all battery types, a digital dot matrix display and an easy-to-use jog dial navigation. Features Internal AC power supply saves on space and doesn't require a separate external power supply 100-240V AC (50/60Hz) or 11-18V DC input voltage Detachable AC power cord 200W charge power per output 25W discharge power per output Short-circuit, over-current, and reverse-polarity protection Low-input voltage protection Over-temperature protection Battery storage mode IP33CW, IK07 environmental rating Includes (2) insulated banana-to-EC3? battery adapter cables Includes (2) JST-XH balance adapter boards Optional high-current DC power cord available (DYN4012) Charges Li-Po/Li-Fe/Li-Ion (1-6 cell), Ni-MH/Ni-Cd (1-15 cell) and Pb battery types 500W internal power supply ensures that full power output is available even while utilizing both charge outputs and all USB power options 0.1-10.0A adjustable charge current per outputFeaturesBattery Type: LiIon, LiPo, LiFe, NiCad, NiMH, PbInternal AC power supply saves on space and doesn't require a separate external power supply.Short-circuit, over-current, and reverse-polarity protection.Input Connector: AC cord, detachable, North American plug. DC cord, detachable, alligator clips.