ProMariner ProIsoCharge Battery Isolator 180Amp 1-Alt 2-Bat - 12V 23122. 23122 System Volts DC 12 Max DC Amps 180 Amp Alternator Input1 Battery Outputs 2 Size 6.15"(l) x 5.875"(w) x 3.125"(h) Weight3 lbs Significantly Smarter... ProIsoCharge delivers...