Diode battery isolator: charges 2 batteries from one alternator, 80A maximum
Batteries stay separate, so flattening the house battery won't flatten the start battery
For 12V and 24V systems
Low voltage drop Schottky diodes (about 0.3V at low current, 0.45V at rated current)
Compensation diode connection to lift alternator voltage
Alternator energize input: powers B+ for alternators that need it to start charging
M6 studs connections
Where to use it
Charging a start battery and one auxiliary battery from the same alternator in boats, trucks, 4WDs and motorhomes, without linking the batteries together.
Diode isolators slightly reduce charge voltage. Use the compensation diode connection (or an alternator with adjustable output) so the batteries still charge fully. For smart alternators or lithium batteries, a DC-DC charger such as the Alvolta Orbit or Victron Orion-Tr Smart is usually the better choice.