REDARC Smart Battery Isolator
Dual Sensing Smart Start® SBI’s or ‘D’ Series SBI’s monitor both the start battery and the auxiliary. If the unit detects that either battery has exceeded 13.2V the isolator will be connected. The benefit of the dual control enables the user to charge the main battery from a solar panel or battery charger on the auxiliary battery. The SBI12D has the added feature of allowing charge both ways.