Product Description: Dual Battery Isolator Kit with Voltage Sensitive Relay Effortlessly Manage Your Vehicle's Power with Advanced Battery Isolation Innovative Functionality: This Dual Battery Isolator Kit acts like having two separate power sources in your vehicle. It allows your accessories to run on a secondary battery when the engine is off, while ensuring that your main battery remains charged and ready to start your vehicle at any time. Smart VSR Kit: Featuring an automatic 140A dual battery isolator, this Voltage Sensitive Relay (VSR) kit efficiently charges two battery systems. It smartly cuts off at 13.3 volts and reconnects at 12.8 volts, guaranteeing that your primary battery is always fully charged and prepared for ignition. Complete Installation Kit: The kit includes everything you need for installation, with no need for alternator or ignition connections. It comes with leads, connectors, screws, zip ties, and more, providing a hassle-free setup that saves time and effort. Versatile Application: Designed for a wide range of vehicles, this voltage sensitive relay kit is suitable for 12V and 24V cars, trucks, RVs, ATVs, UTVs, boats, vans, SUVs, caravans, and camping applications. Its versatility makes it an ideal choice for various power management needs. Professional Manufacturing: Manufactured to meet standard specifications and undergoes strict factory quality control, this voltage sensitive relay kit is built for long-lasting use. Its reliable design ensures consistent performance, making it a dependable solution for managing your vehicle's battery systems. Upgrade your vehicle with this Dual Battery Isolator Kit, offering smart power management and ensuring your vehicle's batteries are efficiently maintained and ready to perform. Ideal for adventurers and professionals alike, it enhances reliability and convenience in power usage.