Nilight 12V 140A Dual Battery Isolator w/Voltmeter

Keep both your starter and auxiliary batteries charged with the Nilight 12V 140A Dual Battery Isolator, featuring a smart Voltage Sensitive Relay (VSR). This isolator automatically connects at 13.3V and disconnects at 12.8V, ensuring your main battery stays ready to start your vehicle while simultaneously charging the secondary battery when the engine runs. Perfect for RVs, trucks, boats, UTVs, and off-road vehicles.

Built to last, this isolator boasts an IP66 waterproof rating and a durable housing with a silicone seal to withstand harsh conditions, vibrations, and extreme weather. The built-in digital voltmeter provides real-time voltage readings, allowing you to monitor battery health effortlessly. Note: Not compatible with lithium batteries. Includes mounting hardware for easy installation.