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The REDARC SBI212D is a microprocessor-controlled dual battery isolator rated for 12V and 200A continuous. It protects the start battery from being drained by non-essential loads while letting the auxiliary battery run them. The dual-sensing design also lets an auxiliary battery charged by solar, an AC charger or another source pass charge back to the start battery once it reaches 13.2V. It is built for 4WD and commercial dual-battery setups that need heavy-duty current handling, fault detection and LED status indication.
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The REDARC Smart Start SBI212D is a microprocessor-controlled dual battery isolator for use in a dual battery system. It works as a solenoid priority system. It protects the start battery from excessive discharge while the auxiliary battery supplies non-essential loads. The SBI range uses the vehicle's alternator to charge the auxiliary battery.
This dual sensing model isolates the start and auxiliary batteries in a system where the auxiliary battery may be charged by solar panels, an external AC battery charger, or another external source. Once the auxiliary battery reaches 13.2V, the external source can also charge the start battery. Its components prevent the solenoid from generating high voltage transients, unlike a diode battery isolator.
It has fault detection with LED indication for voltage drop, over-voltage, or excessive current draw. It is fully surge protected and has an overmold design with silver contacts. It is used primarily in 4WD and commercial vehicles.
