Victron Energy Argofet Battery Isolator 100-2AC 100A 2 BatteryA FET-based battery isolator that allows simultaneous charging of two batteries from a single alternator without directly connecting them. The Victron Energy Argofet 100-2AC handles 100 amps and automatically adjusts between 12-volt and 24-volt systems. Unlike diode isolators, these FET isolators have virtually no voltage loss - less than 0.02V at low current and averaging only 0.1V at higher currents. This means discharging the accessory battery won't drain the starter battery, and there's no need to increase alternator output voltage. Keep cable lengths short for optimal poundsProductdimensions4.7 x 2.6 x 7.9 inches