Features:High and low voltage protection: When the input voltage is lower than 11V or higher than 17V, the circuit is automatically disconnected to protecting the main battery from over-discharge or protecting the secondary battery from high voltage shock.Voltmeter display: If two batteries are connected, the voltage displayed on the voltmeter is the battery with the higher voltage.Easy to use: When the voltmeter is not working, press the button once and the voltmeter will display the value for 2 seconds.Automatic state use function: When the input voltage exceeds 13.3V, the circuit is automatically connected. When the input voltage drops to 12.7V, the circuit will be automatically disconnected.Satisfactory service: If you have any questions, please contact us in time. We will provide you with better products and services.Notice:1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurementDescription:Continuous current: 100-120AInstantaneous current: 160ACurrent Consumption - Charging: 250mACurrent Consumption - Standby: 8mAAmbient temperature: -2050Detachment delay: 5-10 secondsRecommended Fuse: 80AmpPower stud: copper screw nut