Redodo Dual Battery Isolator 12V 24V 150A, Manual and Automatic VSR Voltage Sensitive Relay with LCD Screen, Smart Battery Isolator for Lithium, Lead-Acid Batteries, for Car Truck RV ATV Boat Marine

Product Overview The Redodo Dual Battery Isolator is a sophisticated Voltage Sensitive Relay (VSR) designed for professional-grade power management in 12V and 24V dual-battery systems. It serves as the central control unit for automatically managing charging and isolation between a starting battery and an auxiliary (house) battery. Its core function is to connect the batteries for charging when the engine is running and isolate them when the engine is off, preventing the auxiliary load from draining the starting battery. The device is engineered for universal compatibility, supporting a wide range of battery chemistries including Lithium Iron Phosphate (LiFePO4), AGM, Gel, and Flooded Lead-Acid batteries. This makes it suitable for diverse applications such as RVs, marine vessels, trucks, 4x4s, and off-road vehicles, where reliable auxiliary power is essential. Key Technical Features and Functionality The product's primary innovation lies in its fully adjustable voltage thresholds. Users can precisely set the connect and disconnect voltages via internal DIP switches to match the exact charging profile of their specific battery type (e.g., 14.2V for LiFePO4, 14.4V for AGM). This solves the compatibility gap of fixed-threshold VSRs, ensuring efficient energy transfer and preventing undercharging or overcharging, thereby maximizing battery health and lifespan. It features a robust 150A continuous current rating, ensuring it can handle high-power charging scenarios. A clear LCD screen provides real-time system monitoring, displaying the voltage and current of both the starting and auxiliary batteries, enabling users to verify system status and performance at a glance. Advanced Safety and Emergency Capabilities This isolator integrates multi-layered protection circuits for system integrity and safety. These include over-voltage protection, over-temperature protection, and reverse-current protection, which collectively safeguard both the batteries and connected electronics from potential damage. A distinctive feature is the manual Emergency Reverse Charge Switch. By pressing a button, the relay temporarily reverses its normal operation for 60 seconds, allowing a charged auxiliary battery to deliver power to a depleted starting battery, enabling an emergency engine start without the need for jumper cables or external assistance. This is a critical safety and convenience function for remote locations.

• 【Adjustable Voltage Thresholds for Versatile Compatibility】Adjustable voltage settings (connect/disconnect) adapt seamlessly to 12V or 24V systems, supporting lithium (LiFePO4), and lead-acid batteries. Perfect for RVs, marine, dual-battery vehicles, and off-road adventures.
• 【Real-Time Monitoring via Built-in LCD Display】The Dual Battery Isolator 12V/24V 150A is equipped with an LCD display that shows the real-time status of voltage and current, allowing you to instantly monitor both.
• 【Emergency Reverse Charge Switch】The emergency reverse charge switch is conveniently controlled by a button. The house battery will charge the starting battery for 60 seconds if its voltage is higher, it enables the emergency start of the engine when the starting battery runs out of power, ensuring your vehicle or marine can be started in an emergency.
• 【Extended Battery Lifespan & Efficient Charging】Solve compatibility gaps in fixed-threshold VSRs! Adjust working voltage to match specific battery types (e.g., LiFePO4’s 14.4V±0.2V), maximizing energy transfer and preventing under/overcharging.
• 【Precision Protection & Safety Assurance】Equipped with multi-layered safeguards including over-voltage, over-temperature, and reverse-current protection to prevent system damage and ensure long-term reliability.
• 【Easy Installation & Universal Application】Compact, tool-free design with standardized wiring for easy installation in cars, trucks, ATVs, and marine systems.