Review on 12VDC Heavy-Duty Winch Marine Golf Cart Solenoid Relay - 150A Continuous Duty, 4-Terminal by David Lamfers

Simply testing this device with no additional load for 30 minutes makes the surface feel very hot. This is a very dangerous product, like a small heater, you need to install a relay connected to the second battery in your trunk. The heat will melt any plastic materials if touched. The product does not have a safety label or an approval standard such as TUV or UL. This is a copycat from China, DO NOT risk using it!