High Battery Compatibility: With 300A high current, our dual battery isolator is the optimal charging solution for high-capacity dual-battery systems. It can adjust start-stop voltage, compatible with lithium, lead-acid and other battery types

Manual & Automatic Modes: No more breakdowns! This voltage sensitive relay enables one-click switching to manual mode, letting your fully charged auxiliary battery reverse-charge a depleted main battery. No jumper cables needed—start the vehicle instantly

Intelligent Delay Function: With an adjustable delay time of 3-60 seconds, this VSR isolator effectively avoids frequent switching, significantly extending the service life of the isolator and battery

Dual Voltage Display: The high-brightness display shows the accurate voltage of the two batteries in real time (range 4.5V-20V). Our 12v split charge isolator can easily diagnose circuit problems and confidently master the system status