Victron Energy ArgoDiode Battery Isolator 140-3AC 3 Batteries 140 AmpThis battery isolator enables charging three batteries simultaneously from a single alternator, ideal for vehicles or boats that need separate starting and accessory batteries. The energize input activates automatically when the engine runs, ensuring your batteries charge without manual intervention. Low-voltage-drop Schottky diodes maintain efficiency, while a compensation diode can boost output to offset any loss through the isolator.MPN