The National Luna 12V Dual Battery Isolator System includes everything needed for a dual battery setup: intelligent isolator relay, controller, cables, fuses, and battery terminals. Installing a dual battery is simple and secure without disrupting the vehicle’s electrical systems. The intelligent isolator relay automatically detects when the main battery is fully charged and safely connects the auxiliary battery. The system prevents overloads, reverse polarity, and short circuits, protecting both batteries and the alternator. The controller continuously displays the voltage of both the main and auxiliary batteries and warns if voltages drop low or if batteries are missing. Extra features such as timer override and LED alerts offer optimal control and convenience, even in demanding applications like winches or solar panel configurations. An extensive manual provides step-by-step guidance through the installation process for added convenience.
