0.73 Ohm, 300 Watt HeavyDuty Dump Load Resistor for 12 Volt Battery Systems Overview A power dump load resistor rated at 0.73 ohm and 300 watts for 12 volt battery dump loads. Designed to work with a charger controller or wind turbine generator to divert excess energy and help maintain efficient system operation. Key benefits Prevents overcharge and reduces controller cycling by safely dissipating excess charge as heat. Helps improve energy conversion and stability in wind turbine and charging systems by providing a reliable dump load when batteries reach capacity. power rating handles substantial excess energy, reducing the need for frequent intervention or manual load switching. Heavyduty construction intended for rugged use in offgrid and renewable energy applications. Main features and specifications Resistance: 0.73 ohm. Power rating: 300 watt power dissipation capability. Designed for use with 12 volt battery systems. Compatible with most charger controllers and wind turbine generators that accept an external dump load input. Built for practical field use; mount and ventilate according to controller and system requirements. How it solves common problems When batteries are full, charge controllers need a place to divert excess power. This resistor provides a predictable, stable electrical load so controllers can maintain proper regulation. In wind turbine systems, gust conditions can produce spikes of power. The dump load resistor absorbs those spikes to protect batteries and maintain system efficiency. For offgrid systems that lack automatic load shedding, this resistor can be integrated to provide continuous, controlled dissipation of surplus energy. Typical applications Wind turbine systems: connect to the turbine controller dump output to absorb excess generation when batteries are fully charged. Offgrid charge controller systems: serve as a dump load for solar or mixed generation setups to stabilize battery voltage and reduce controller cycling. Electrical testing and load simulation: use for load testing of 12 volt charging circuits or alternators where a known resistive load is required. Installation tips Verify your controller or turbine supports an external dump load and follow the controller wiring diagram. Provide adequate ventilation or mounting clearances to allow heat dissipation. Use appropriately rated wiring and secure mechanical mounting to ensure safe operation. This 0.73 ohm, 300 watt dump load resistor is a practical component for 12 volt systems that require a robust, predictable method to manage excess energy produced by chargers or wind turbines.