Guest 1 Alt 2 Battery Isolator - 70 AmpBattery Isolator with gold-plated terminals and improved efficiency provide enhanced charging. Rated for use with DC devices ranging from 10 Amps to 70 Amps. Usage: 1 Alternator / 2 Batteries; Max. Output per Alternator: 70 Amps; Operation: 12V to 48V; Dimensions: 5.4 x 4.5 x 2.6;