Redarc Smart Start Battery Isolator 

The REDARC Smart Start SBI12 100A is a 12V DC 100A microprocessor-controlled, dual battery isolator designed to protect the start battery from excessive discharge while allowing the auxiliary battery to supply charge to non-essential loads.

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.


- Overmould design
- Compact in size and easy to install
- Silver contacts for longer life and suitable for marine applications
- Power saving technology
- Fault indication
- Fully surge protected

Power Saving Technology:

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. 

Input (Operating) Voltage: 12VDC
Output Current Rating: 100A
Input Fuse Rating: 100A
Output Fuse Rating: 100A
Warranty: 2 Years
Length (mm): 80
Width (mm): 75
Height (mm): 63
Weight (kg): 0.2
Type Approval: CE
Brand Redarc
Shipping Weight 0.5000kg