The upgraded 1.5 version of the dual power isolator uses a power management chip for intelligent automatic circuit control. Features include strong waterproof performance, low power loss, efficient heat dissipation, and high efficiency. Usage instructions: When the main battery voltage is 13.3V, the main battery charges the auxiliary battery. When the main battery voltage drops below 12.7V, the connection between the main and auxiliary batteries is disconnected. Product parameters: Type: 12V voltage sensitive relay Continuous current: 100-120A Instantaneous current: 160A Charging current consumption: 250mA Standby current consumption: 8mA Includes reverse connection protection Operating temperature: -20°C to 50°C Disconnection delay: 5-10 seconds Recommended fuse: 80A Power terminal: M6 copper screw nut Surge protection: Built-in Color: As shown in photo Material: Plastic and metal Package contents: 1 x Split charger relay kit Note: Light reflection and differences in display screens may cause slight variations in color between the item and the image. Measurement error allowance is +/- 1-3 cm.