Victron Energy ArgoDiode 80-2SC Battery Isolator 2 Battery 80AA diode battery isolator that allows simultaneous charging of two batteries from a single alternator without connecting them together. This 80-amp unit uses Schottky diodes to minimize voltage drop, ensuring efficient power transfer to both batteries. When the accessory battery discharges, the starter battery remains protected and fully charged. Includes a compensation diode that can slightly increase alternator output voltage to offset the drop across the isolator poundsProductdimensions4.5 x 3.1 x 5.5 inchesStyle80-2SC