Victron - Cyrix-ct 12/24V-120A Battery Combiner Kit Retail [CYR010120110R]

This Battery Combiner Kit is for adding a 2nd or 3rd battery system in your car, boat, RV or any other vehicle. It utilizes the simplest and most advanced technology to keep all your batteries charged using the engine’s electrical system, but isolates the starting battery when charging ceases so you never get stranded.