Amazon.com: 12V Dual Battery 140A Smart Isolator (VSR Voltage Sensitive Relay) for Auto/Boat/RV : Automotive
Battery Isolator 101: How & Why They're Used in a Dual Battery System - YouTube
Amazon.com: SiMaXuanCar Battery Isolator Battery Charging Isolator 6-50V DC 75AMP DC to DC Charger for Multi-Battery Parallel Circuits for car, Boat, RV, UTV, MPV, etc. : Automotive
Battery Isolator | Pacific Yacht Systems
Battery Isolation with P Mosfet - General Electronics - Arduino Forum