This is the Hobbico LiFeSource AC/DC Balancing Battery Charger. FEATURES: Charges the entire line of Hobbico LiFeSource Lithium-Iron Phosphate (LiFe) batteries Uses the cc/cv (Constant Current/Constant Voltage) charge method with voltages customized for LiFe batteries Selectable charge currents for use with various size batteries Setting up and usage is easy with an auto-start function with status LED and audible tones Built-in socket for connecting batteries with Futaba J or universal receiver connectors 110V AC or 12V DC inputs with alligator clips for home or field use Built-in 3S balancing connector with 2S adapter included-balancing ensures all cells are charged to optimum voltage every time Solid state reverse polarity and current overload protection Five year limited warranty through Hobby Services beginning at date of purchase INCLUDES: Hobbico LiFeSource AC/DC Balancing Battery Charger with AC and DC Power Leads, JST XH 3S Balancing Connector, Star Plug Battery Connector and Instructions REQUIRES: Connecting to power source and battery SPECS: AC Input: 110V AC 60Hz, U.S. type AC connector (18W max.) DC Input: 11-15V DC, built-in lead with alligator clips (40W max.) Battery Types: 1-3S LiFe Packs (3.3-9.9V) Battery Capacity Range: Up to 5000mAh Fast Charge Current: 0.5, 2.5, 4.0A (15W 2.5A limit on AC) Fast Charge Termination: cc/cv, based on nominal voltage 3.3V per cell Fast Charge Safety Timer: 90 minutes Controls: Auto-start, switchable current selector LED Indicator: Red Audible Indicator: Charge completion Output Connections: Built-in lead with Star Plug male connector built-in Rx connection Lithium Balancing Connector: JST XH 3S balancing connector with 2S adapter Lithium Balancing Accuracy: 8mV per cell Lithium Max. Node Current: 100mA Protective Devices: Solid-state reverse polarity, current overload Case size: 4.1 x 3.5 x 1.1" (104 x 90 x 29mm) Weight: 9.17 oz. (260g)