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REDARC Dual Sense Smart Start Battery Isolator 24V 100A SBI24

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Original price $275.00 - Original price $275.00
Original price
$275.00 - $275.00
Current price $275.00

REDARC Dual Sense Smart Start Battery Isolator 24V 100A with 12 months warranty

The REDARC Smart Start® SBI24D is a dual battery isolator used to isolate the start and auxiliary batteries in a dual battery system. It will protect the start battery from a low charge in the secondary battery so it won’t drain the primary battery. The SBI24D provides 24 volt DC incorporating 100A of continuous ratings. 

Dual Sensing

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 SBI24D also allows the start battery to be topped up and charged from the auxiliary battery when the auxiliary battery is being charged by an external source once it reaches 26.4 volts.

Power Saving Technology

The Smart Start SBI24D is a microprocessor-controlled battery isolator that incorporates electronic components preventing 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 sophisticated fault detection and LED indication of operation to warn the user of faults including over-voltage, voltage drop and excessive current draw conditions.

Used primarily in commercial vehicles, the Smart Start SBI is a safe way to charge auxiliary batteries and should often be installed with a high-quality fuse kit.


  • 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
Input (Operating) Voltage 24VDC
Output Current Rating (Cont.) 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