The upgraded 1.5 version of the dual power isolator uses an power management chip, which is a relatively new electronic circuit intelligent automatic management. Strong waterproofness, low loss, good heat dissipation, and high efficiency Instructions for use: When the voltage of the main battery is 13.3V, the main battery charges the auxiliary battery; when the voltage of the main battery is lower than 12.7V, the main battery and the auxiliary battery are disconnected Product parameters Type: 12V voltage sensitive relay Continuous current: 100-120A Instantaneous current: 160A Consumption current-charging: 250mA Current consumption-standby: 8mA With anti-reverse connection function Ambient temperature: -20~50 Disengagement delay: 5-10 seconds Recommended fuse: 80Amp Power stud: M6 copper screw nut Surge protection: built-in Colour:Photo Color Material:Plastic+Metal Package Contents: 1x Split Charger Relay Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.