DC Voltage Reducer: Input Voltage Range: 8V-40V Output Voltage: 13.8V; Output Current: 25A; Output Power: 300W Protections: Assembled With Smart Chip,Over-Load, Over-Current, Over-Temperature, Short-Circuit, Over-Voltage High Conversion Efficiency: Synchronous Rectification Technology,Reduce the Loss of the Rectifier, Improve the Converter Efficiency, The Conversion Efficiency Can Reach 95% Aluminum Shell and Silicone Sealed Design:IP68 Waterproof, Anti-Dust, Anti-Shock, Anti-Humidity, Dust-Proof, Better Heat Dissipation and More Durable Wide Application: Large Trucks, Golf Cart, Club Car, Taxi Radio, Emu, Car Audio, LCD TV, Advertising Screen, LED Strip Lights, Monitoring System, Electronic Systems and DIY etc.