This prevents problems that may result from your charging source being too low in amps to charge all batteries at once. The advanced technology always insures that the first battery is fully charged (13.4v) before connection is made to the second battery. a battery charger is connected to the auxiliary battery the relay will engage and charge both batteries. If either battery is receiving a charge, e.g. The smart isolator is also “Dual Sensing” which senses the charge of both batteries. The small size and rugged construction of these units allow for quick simple installation for even the most novice DIYer.
These units can be installed between batteries with a common ground to automatically control the charging process to the batteries but continue to provide isolation when a charging source is unavailable.
A smart battery isolator is the ultra-simple and most technologically advanced method of automatic battery isolation.
