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REDARC- Smart Start SBI 24V 200A


Type: Interior Accessories


The REDARC Smart Start® SBI224 protects the start battery from excessive discharge while the auxiliary battery is supplying non-essential loads in dual battery systems. The SBI224 provides 24 volt DC incorporating 200A of continuous ratings. The 200A battery isolator is suited best for heavy-duty operations.

Power-saving technology

The Smart Start SBI224 battery isolator is mostly used in commercial vehicle dual battery systems. It incorporates electronic components preventing the solenoid from generating high voltage transients. It's used instead of a diode battery isolator due to reduced voltage drop associated with diode type isolation. Sophisticated fault detection and LED indication of operation warn the user of faults including over-voltage, voltage drop, and excessive current draw conditions.

Perfect for heavy-duty dual battery systems

The Smart Start SBI224 battery isolator is a safe way to charge heavy-duty dual battery systems.


  • Overmold design
  • Compact size
  • Easy to install
  • Silver contacts for longer life (suitable for marine applications)
  • Power-saving technology
  • Fault indication
  • Fully surge protected

Need help?

Not sure what dual battery system is best for your vehicle? Let Shaun Whale explain more.

 California residents: see Proposition 65 information

Instruction Manual

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