- Automatically manages two battery systems by combining them during charging and isolating them when not in use, preventing any drain on the primary battery. - Features a 12V 140Amp Double Battery Isolator with voltage-sensitive relays that engage at 13.3 volts and disengage at 12.8 volts, ensuring your primary battery remains charged and ready to start your vehicle. - Utilizes an advanced imported power management chip for intelligent automatic circuit management, offering strong waterproof capabilities, low power loss, excellent heat dissipation, and high efficiency. - Compatible with DC12V dual battery systems, this isolator is ideal for cars, trucks, boats, and any electrical equipment that requires two batteries. - Perfect for recreational vehicles and marine applications, ensuring reliable performance during extended trips or when using additional electrical devices. - Suitable for off-road enthusiasts who need a dependable power source for winches, lights, and other accessories without risking the primary battery's charge. - Designed for easy installation, making it accessible for both professional mechanics and DIY enthusiasts.