REDARC Smart Start SBI 24V 200A

REDARC Smart Start SBI 24V 200A Battery Isolator

Protect your starting battery while reliably charging your auxiliary battery with the REDARC Smart Start® SBI224 Battery Isolator. Designed for heavy-duty 24V dual battery systems, this microprocessor-controlled isolator delivers a 200A continuous current rating and automatically separates the start battery from auxiliary loads, helping ensure dependable engine starting when you need it most.

Engineered primarily for commercial vehicles and other demanding 24V applications, the SBI224 automatically manages battery isolation without requiring manual switching. As your alternator charges the system, the isolator intelligently connects and disconnects the batteries based on voltage, allowing the auxiliary battery to power accessories while protecting the vehicle's primary starting battery.

Unlike traditional diode isolators, the SBI224 uses REDARC's Smart Start technology to minimize voltage drop while incorporating power-saving electronics that reduce high-voltage transients generated by the solenoid. Advanced fault detection continuously monitors system performance and alerts users to over-voltage, voltage drop, and excessive current conditions.

Built with heavy-duty silver contacts, full surge protection, and a compact overmolded housing, the SBI224 is engineered to provide dependable battery management for commercial vehicles, fleet applications, marine systems, and heavy-duty electrical installations.

24V Operation • 200A Continuous Rating • Automatic Battery Isolation • Heavy-Duty Applications • Full Surge Protection

Key Features

• 24V Dual Battery Operation: Designed specifically for commercial and heavy-duty 24-volt electrical systems.
• 200A Continuous Current Rating: Handles demanding dual battery installations requiring high-current capacity.
• Automatic Battery Isolation: Protects the starting battery by disconnecting auxiliary loads when charging voltage is no longer available.
• Microprocessor-Controlled Operation: Continuously monitors battery voltage to automatically manage battery connection.
• Power Saving Technology: Helps reduce high-voltage transients while minimizing power consumption.
• Advanced Fault Detection: Monitors for over-voltage, voltage drop, and excessive current draw conditions.
• LED Status Indication: Provides quick visual confirmation of operating status and fault conditions.
• Heavy-Duty Silver Contacts: Long-life contact design suitable for demanding vehicle and marine applications.
• Fully Surge Protected: Helps safeguard connected electrical systems from damaging voltage spikes.
• Compact Overmold Design: Durable housing allows installation in confined engine compartments.

Why It Performs

• Protects Your Starting Battery: Prevents auxiliary accessories from discharging the battery required to start your vehicle.
• Optimizes Dual Battery Charging: Automatically manages battery connection without manual switches or intervention.
• Reduces Voltage Loss: Solenoid-based isolation avoids the charging losses associated with traditional diode isolators.
• Built for Heavy-Duty Service: A 200A continuous rating supports commercial vehicles and high-demand electrical systems.
• Improves System Reliability: Fault detection and surge protection help maintain dependable operation in harsh environments.
• Designed for Mobile Applications: Rugged construction withstands vibration, demanding road conditions, and long-term service.

Technical Specifications

• Brand: REDARC
• Product: Smart Start® Battery Isolator
• Model: SBI224
• System Voltage: 24V
• Continuous Current Rating: 200 Amps
• Battery Management: Automatic Voltage Sensing
• Control Type: Microprocessor Controlled
• Protection: Surge Protection and Fault Detection
• Status Indication: LED Indicator
• Contact Material: Heavy-Duty Silver Contacts

What's Included

• (1) REDARC Smart Start® SBI224 Battery Isolator

Important Installation Note: The SBI224 is intended for 24V dual battery systems using alternator charging. Proper cable sizing, circuit protection, and installation practices are essential for safe operation. Mounting hardware, wiring, batteries, and other electrical components are sold separately.

Ideal For

• Commercial Vehicles
• Heavy-Duty Trucks
• Fleet Vehicles
• Service Trucks
• 24V Dual Battery Systems
• Marine Electrical Systems
• Auxiliary Battery Installations
• Industrial Equipment
• Remote Work Vehicles
• Heavy-Duty Power Management

Why Choose the REDARC Smart Start SBI224?

• Purpose-built for heavy-duty 24V dual battery systems.
• Automatically protects the starting battery from excessive discharge.
• High-capacity 200A continuous rating supports demanding electrical loads.
• Microprocessor-controlled operation delivers intelligent battery management.
• Power-saving technology reduces voltage loss compared to traditional diode isolators.
• Built to REDARC's proven standards for commercial, marine, and off-road applications.

Why Buy from Expedition Superstore?

• Authorized REDARC Dealer: Shop genuine REDARC battery management, charging, solar, and vehicle electrical products backed by knowledgeable overland and commercial vehicle specialists.
• Complete Power Solutions: Find battery isolators, BCDC chargers, lithium batteries, solar panels, inverters, and electrical accessories all in one place.
• Expert System Support: Get help selecting the right battery management solution for your vehicle, fleet, or off-grid electrical system.
• Free Shipping: Enjoy free shipping on qualifying orders over $349 so you can spend less on freight and more on your build.
• Need help designing your dual battery system? — Schedule your build chat today!