REDARC SBI224 Smart Start Battery Isolator 24V 200A

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REDARC Smart Start Battery Isolator 24V 200A

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 warns 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

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

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SKU number  SBI224
UPC number  9338628000036
Output Voltage 24VDC
Output Current Rating (Cont.) 200A
Input Current (Cont.) 200A
Input Fuse Rating  200A
Output Fuse Rating  200A
Width (in) 3.74
Height (in) 3.74
Length (in) 3.74
Weight (lb) 1.69
Warranty  2 Years
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