The REDARC Smart Start SBI12D is a microprocessor-controlled dual-sensing battery isolator designed for 12-volt dual-battery systems. With a 100-amp continuous rating, it helps protect the vehicle’s starting battery from excessive discharge while allowing an auxiliary battery to power non-essential accessories. This heavy-duty isolator is well suited for 4WDs, commercial vehicles, powersports applications, and marine installations where dependable battery management is essential.
The SBI12D uses smart voltage sensing to connect and isolate batteries automatically. It allows the alternator to charge the auxiliary battery while driving and can also permit the starting battery to receive charge from an external source after the auxiliary battery reaches the required voltage. Its dual-sensing operation provides greater flexibility than a single-sensing isolator, especially in systems that use solar chargers, shore power, or other external charging equipment.
The compact overmolded design supports straightforward installation and reliable operation in demanding environments. Silver contacts help promote long service life, while built-in surge protection helps prevent damaging voltage transients from the solenoid. Power-saving technology reduces unnecessary energy consumption, and integrated LED fault indication alerts users to conditions such as voltage drops, over-voltage, or excessive current draw. By avoiding the voltage drop associated with diode-style isolators, the SBI12D helps deliver efficient charging performance for auxiliary battery banks.
Choose the REDARC Smart Start SBI12D for an effective way to manage secondary battery charging while protecting the primary starting battery. Its automatic operation, dual-voltage sensing, fault indication, and heavy-duty construction make it a practical solution for mobile accessory power systems.
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