ProMariner ProIsoCharge Battery Isolator 180Amp 1-Alt 3-Bat - 12V 23125. 23125 System Volts DC 12 Max DC Amps 180 Amp Alternator Input1 Battery Outputs 3 Size 7.55"(l) x 5.875"(w) x 3.125"(h) Weight5 lbs Significantly Smarter... ProIsoCharge delivers...