VEVOR 12V 300A Dual Battery Isolator w/ LCD

Optimize your dual-battery setup with the VEVOR 12V 300A Dual Battery Isolator, featuring a high-capacity 300A design that efficiently charges both lithium and lead-acid batteries. This smart voltage-sensitive relay (VSR) offers seamless compatibility with various battery types, ensuring reliable power distribution for cars, trucks, RVs, boats, and off-grid systems.

Equipped with both manual and automatic modes, this isolator eliminates the need for jumper cables—simply switch to manual mode to reverse-charge a depleted main battery from a fully charged auxiliary battery. The adjustable 3-60 second delay function prevents frequent switching, enhancing durability and extending battery life. A clear LCD screen displays real-time voltage readings (4.5V-20V) for both batteries, while built-in overvoltage and undervoltage protection safeguards your system against damage. Shockproof and dustproof, this isolator delivers stable, long-lasting performance in any environment.