American Motorhome RV 90 Amp Battery Isolator NOCO IGD90HP

A solid-state battery isolator that separates multiple battery banks so they charge simultaneously from a single alternator, without draining each other. It's more reliable than older mechanical or solenoid-based isolator systems, and current flow to each battery is automatically set by that battery's own state of charge. Amp rating: 90A (for alternators rated 90A or less, including Delcotron series) Voltage: 12–48V DC, negative ground systems