To ensure your boat has a sufficient source of power, head out onto the water with Progressive Dynamics' PD2140V 40-amp Electronic Marine Converter/Charger designed to simultaneously charge up to three separate battery banks. The charger takes 105-130 VAC, 50-60 Hz, or 650 Watts. 2 Year Limited Manufacturers Warranty. Replaces: PD9245C Features: - Four-Stage Charging System - Patented Microprocessor constantly monitors battery voltage and automatically selects one of the four charging modes; BOOST, NORMAL, STORAGE or EQUALIZE. - Patented Reverse Battery Protection - Allows the converter/charger to charge three separate banks of batteries. Each output is capable of handling the full rated current of the charger. - Over Voltage Protection - Prevents converter/charger from being damaged if the batteries are accidentally connected to the charger in reverse. - Inteli-Power Converter/Chargers can be connected in series to provide a combination 12/24 Volt system, or in parallel to provide more current. - Prevents high voltage spikes from damaging the converter/charger. - Electronic Current Limiting - Limits the output current to the maximum rating of the charger to prevent overheating and damage caused by shorts or excessive loads. - Variable Speed Intelligent Cooling Fan - Only runs as fast as required to maintain a more constant operating temperature inside the converter/charger. This feature reduces thermal stress caused by fans that cycle on and off. - Programmable in the Field - To provide optimum charging profiles for lead-acid, gel-cell, or AGM batteries. - Regulated Output Voltage - Prevents AC Line voltage variations from being transmitted to the batteries and 12 volt circuits. - Automatic Over-Temperature Shutdown - Prevents converter/charger damage in the event the fan is unable to cool the charger due to