IP67 140Amp 12VDC VSR Dual Smart Battery Isolator Kit with Wiring Cable

About this item 【Efficient Voltage Management】 - The Voltage Sensitive Relay (VSR) seamlessly manages your batteries. It activates at 13.3 volts (indicated by the LED turning on) and deactivates at 12.8 volts (LED off). This ensures your primary battery stays charged and ready to power your vehicle whenever needed. 【Intelligent Operation】 - When your engine is running, the VSR engages as soon as the starting battery reaches 13.3 volts, signaled by the illuminated LED. This links both batteries, creating a unified system. When you turn off your vehicle, the system disengages the batteries as they reach 12.8 volts, preserving your main battery for the next start. 【Rugged Build】 - Our 140A 12V VSR is built to handle various environments, including off-road adventures. It's water-resistant, shock-resistant, and dustproof, capable of enduring unexpected extreme weather conditions. 【Safety First】 - The Dual Battery Isolator guarantees your car's electrical system remains safe from overchargi