55 Amp 12/24 Voltages Wheel-Style Charger Truck Charger Automatic Starter Heavy Duty 110V 60Hz Battey Charger For Lead-Acid Batteries AC Input: 12V = 1400W , 24V= 2600W CE, RoHS Certified, Perfect For Cars, Boats, Trailers, RV's Built In Fan for Cooling With Automatic Thermistor Protection Adjustable Timer For Quick Charge, Set & Forget