The Victron Energy Argodiode 120-2AC 120A battery isolator allows two 12V or 24V batteries to charge simultaneously from one alternator without electrically connecting the battery banks. Its high-efficiency Schottky diodes help prevent an accessory battery from discharging the starter battery while keeping voltage drop low.
Rated for 120A maximum charge and alternator current, it includes a compensation diode and alternator energize input for compatible charging systems. Installed between the alternator and batteries, it provides reliable dual-battery isolation and efficient charging for vehicle and marine applications.