REDARC Smart Start SBI 12V 200A

REDARC Smart Start SBI 12V 200A Battery Isolator

Protect your starting battery while automatically charging your auxiliary battery with the REDARC Smart Start® SBI212 Battery Isolator. Designed for demanding 12V dual battery systems, this microprocessor-controlled isolator delivers a 200A continuous current rating and intelligently manages battery charging while preventing excessive discharge of your vehicle's starting battery.

Ideal for commercial vehicles, overland builds, 4WDs, RVs, service trucks, and marine applications, the SBI212 functions as a solenoid priority system that automatically separates the starting battery from auxiliary loads. This allows accessories such as refrigerators, lighting, compressors, and inverters to operate from the auxiliary battery while preserving reliable starting power.

REDARC's Smart Start technology utilizes power-saving electronics that reduce high-voltage transients generated by the solenoid while minimizing the voltage losses commonly associated with traditional diode battery isolators. The result is more efficient charging and improved overall system performance.

With low standby current draw, advanced fault detection, LED status indication, heavy-duty silver contacts, and full surge protection, the SBI212 is engineered to provide dependable battery management in harsh commercial, off-road, and marine environments.

12V Operation • 200A Continuous Rating • Automatic Battery Isolation • Heavy-Duty Performance • Full Surge Protection

Key Features

• 12V Dual Battery Operation: Designed for heavy-duty 12-volt dual battery systems in commercial and recreational vehicles.
• 200A Continuous Current Rating: Supports demanding electrical systems requiring high-current battery isolation.
• Automatic Battery Isolation: Protects the starting battery by disconnecting auxiliary loads when charging voltage is unavailable.
• Microprocessor-Controlled Operation: Continuously monitors battery voltage to automatically connect and isolate batteries.
• Power Saving Technology: Reduces power consumption while minimizing high-voltage transients generated by the solenoid.
• Advanced Fault Detection: Detects over-voltage, voltage drop, and excessive current draw conditions.
• LED Status Indication: Provides visual confirmation of operating status and fault conditions.
• Heavy-Duty Silver Contacts: Long-life contact design suitable for commercial and marine environments.
• Fully Surge Protected: Helps safeguard sensitive vehicle electrical systems from damaging voltage spikes.
• Compact Overmold Design: Durable housing allows easy installation where space is limited.

Why It Performs

• Protects Your Starting Battery: Automatically prevents auxiliary accessories from discharging the battery required to start your vehicle.
• Efficiently Charges Auxiliary Batteries: Provides a reliable method of maintaining secondary battery banks while driving.
• Reduces Charging Losses: Solenoid-based isolation minimizes the voltage drop associated with traditional diode isolators.
• Built for Heavy-Duty Applications: A 200A continuous rating supports commercial vehicles and demanding electrical installations.
• Improves System Reliability: Low standby current, surge protection, and fault monitoring help ensure dependable long-term performance.
• Designed for Harsh Conditions: Rugged construction withstands vibration, demanding environments, and extended service life.

Technical Specifications

• Brand: REDARC
• Product: Smart Start® Battery Isolator
• Model: SBI212
• System Voltage: 12V
• 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® SBI212 Battery Isolator

Important Installation Note: The SBI212 is designed for 12V 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
• Overland Vehicles
• 4WD Touring Builds
• Work Trucks
• RV Dual Battery Systems
• Marine Electrical Systems
• Auxiliary Battery Installations
• Fleet Vehicles
• Off-Grid Power Systems
• Heavy-Duty Electrical Upgrades

Why Choose the REDARC Smart Start SBI212?

• Purpose-built for demanding 12V dual battery systems.
• Automatically protects the starting battery from excessive discharge.
• Heavy-duty 200A continuous rating supports high-current electrical systems.
• Microprocessor-controlled operation delivers intelligent battery management.
• Power-saving technology minimizes voltage loss compared to 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!