![]() Used primarily in 4WD and commercial vehicles, the Smart Start SBI is a safe way to charge an auxiliary battery and should often be installed with a high quality fuse kit. If you want to make the 2 battery available for cranking, then a hard connection to bus by way of a battery contactor is required. Depending on how they are wired, battery isolators may interfere with alternator regulator performance. It features sophisticated fault detection and LED indication of operation to warn the user of faults including over-voltage, voltage drop and excessive current draw conditions. Battery isolators are heavy critters that dump approxi-mately 6 of your alternator's output in wasted heat. Note: Unlike the solenoid version of our battery isolators the voltage from the auxiliary battery can feed back to the vehicle through the body diode of the MOSFET switches. It is better than a diode battery isolator due to the voltage drop associated with diode type isolation. A battery isolator is a device that typically runs between a starter battery and a secondary battery. Fifth, no external diodes or current sense resistors are needed, the unit is a self-contained solid-state dual battery isolation relay. ![]() The Smart Start SBI12D incorporates electronic components that will prevent the solenoid from generating high voltage transients. This is useful to top up the start battery. The SBI12D also allows the start battery to be charged by the external source once the auxiliary battery reaches 13.2 volts. The dual sensing model is used to isolate the start and auxiliary batteries in a system where the auxiliary battery may also be charged by an external source such as Solar panels or an external AC battery charger. The SBI12D provides 12 volt DC incorporating 100A of continuous ratings. It is designed to be used in dual battery systems as a solenoid priority system to protect the start battery from excessive discharge. The REDARC Smart Start® SBI12D is a microprocessor controlled battery isolator used in a dual battery system. ![]() Please use drop down box to select 100A or 200A RedArc Dual Sensing Smart Start Battery Isolator 12Vġx Dual Sensing Smart Start Battery Isolator 12V
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