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The REDARC Smart Start® SBI2 is a microprocessor-controlled battery isolator used in dual battery systems as a solenoid priority system. It will protect the start battery from excessive discharge, whilst allowing the auxiliary battery to supply non-essential loads. The SBI2 provides 12 volt DC incorporating 100A of continuous ratings.
The battery isolator is primarily used in 4WD and commercial vehicles and incorporates electronic components that will prevent the solenoid from generating high voltage transients. It is better than a diode battery isolator due to the voltage drop associated with diode type isolation. It features a low standby current draw and sophisticated fault detection and LED indication of operation to warn the user of faults including over-voltage, voltage drop and excessive current draw conditions.
The Smart Start SBI12 battery isolator is a safe way to charge a dual battery system and should often be installed with a high quality fuse kit.
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Not sure what dual battery system is best for your vehicle? Let Shaun Whale explain more.
For reviews on the Smart Start Battery Isolator, watch the below
What is a smart battery isolator and why would you need it?
Come behind the scenes at REDARC as Shaun Whale teaches you how to choose the best dual battery setup for your 4WD.
Explaining offroad battery chargers - with Patriot Campers
Review by Pat Calinan from 4x4 Adventure
REDARC Smart Start Dual Battery Isolator Features with Carlisle Rogers 4WD Touring Australia
The difference between a REDARC SBI & BCDC with 4WD NZ
See the correct way to mount a Smart Battery Isolator
See a basic Smart Battery Isolator install