General description Portable car heater defroster designed for quick heating and convenience during travel, camping, and glass defrosting. This 800W high power heater utilizes a PTC ceramic heating element to provide effective windshield defrosting, demisting, and preheating of engine coolant to prevent wear during cold starts. Technical specifications Power: 800W Voltage: 12V Heating element: PTC ceramic Installation Connect the red line to the positive electrode and the black line to the negative electrode. Do not open the internal circuit during installation. For optimal performance, use copper wire connected directly to the battery or car generator. Usage Ideal for windshield defrosting and demisting. Preheats engine coolant to reduce wear during cold starts. Designed for short-term use to avoid draining the battery.