Dual Battery Isolator Switch Kit, 12V 140A VSR Voltage Sensitive Relay with 6 AWG Wiring Cable Set, Smart Battery Split Charge Manager for Boat Yacht Car Polaris RV ATV UTV Camper Van Truck Off-Road

12V 140A Dual Battery Isolator Kit, 12V 140A VSR Voltage Sensitive Relay, Smart Battery Split Charge Manager with 6 AWG Power Cable & Wiring Terminal SetVolt: 12V DCCut-in: 13.3VCut-out: 12.8VIntermittent Current: 140AContinous Current: 125AOperation Temperature Range: -30℃-105℃Storage Temperature Range: -40℃-125℃Power Stud: M6 stainless steelWater Resistance rating: IP68Disengagement Delay: 3-5 secondsSurge Protection: Built-in1. SHORT-CIRCUIT PROTECTION2. LIGHTNING PROTECTION3. VOLTA PROTECTION4. GROUND ROTECTION5. OVERLOAD PROTECTION6. TEMPERATURE PROTECTIONHigh QualityIt comes with copper lugs、negative marine baterry terminal and positive marine baterry terminal that make it easy for more equipments.Silicone sealed interiorIt is the only unit designed with cutting edge programming to deliver optimum performance, avoid the dead battery.IP68 WaterproofMade of high-quality material casing to protect the battery isolator, and the interior is sealed with silicone to make it waterproof.Easy InstallationThis dual battery isolator kit includes all the accessories you need, which is easier to install and operate.HOW DOES THE VSR WORK1. When the voltage of start battery is higher than cut-in volts, the smart battery isolator keeps en-gaging, two batteries (start and auxiliary) are charged simultaneously.2. When the batteries no longer have a charge from the alternator, and loads on the batteries begin to drain them.3. When the voltage drops below cut-off volts for 5 seconds, the smart battery isolator senses it and disengages, separating both batteries.4. When the vehicle is restarted, the start battery has reached the cut-in volts, the SBI engaged again. The device Indicator (LED) is on.Wide ApplicationDual Battery Isolator Kit Enables Your Accessories to Run From a Separate Battery While the engine is not running on your vehicle While keeping your Main Battery Charged and Your Vehicle Always Ready to Go and Start When You Want It. Suitable for 12V Camper Van Truck, Caravan, RV, ATV, UTV, Boat and Camping Applications.Package Includes: 1x 140amp smart battery isolator; 1x 6AWG Red Battery Cable with Two Connectors; 1x 6AWG Black Battery to Ground Cable with Two Connectors; 1x negative marine battery terminal; 2x positive marine battery terminals; 3x 5/16” battery clamp; 8x screws; 6x nuts; 4x spring washers; 2x red heat shrink; 1x black heat shrink; 2x insulated blue ring terminals; 6×cable ties.

• 【Smart Fully Automatic Operation】 Features a 140A Voltage Sensitive Relay (VSR) that automatically combines two batteries during charging and isolates them when not charging. It ensures your starting battery is always topped up, preventing you from being stranded with a dead battery.
• 【Universal Compatibility & High Capacity】 This 12V 140 Amp isolator kit is perfect for 4WD, Marine, RV, and Truck applications. Designed to handle high current loads, it’s the ideal solution for adding a second battery to power winches, refrigerators, or lighting systems without draining the main battery.
• 【IP67 Waterproof & Rugged Durability】 Built with a robust, silicone-sealed inner shell, this battery isolator is IP67 waterproof and vibration-resistant. It thrives in extreme off-road, rainy, or dusty environments, ensuring long-lasting performance for your UTV, ATV, or boat.
• 【Complete Installation Kit】 No need to buy extra components! The package includes the 140A VSR, high-quality power cables, ground wires, battery terminals, and mounting hardware. The user-friendly design allows for a clean and professional "plug and play" installation.
• 【Comprehensive Protection】 The intelligent relay features built-in surge protection and precise voltage thresholds (cuts in at 13.3V and cuts out at 12.8V). Protects your vehicle's sensitive electronics from voltage spikes and ensures optimal charging for both batteries.