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✔ Manufacturer warranty: we help with claims
✔ Fitment question? Email [email protected]
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Free shipping on orders $100+ to the contiguous U.S. (flat $12.99 under $100)
The REDARC Smart Start® SBI212D is a microprocessor-controlled dual battery isolator used in a dual battery system. It is designed to be used as a solenoid priority system to protect the start battery from excessive discharge while allowing the auxiliary battery to supply non-essential loads. And its compact size makes it easy to install.
The SBI212D provides 12 volt DC incorporating 200A of continuous ratings and is designed for extremely heavy-duty operations. This dual sensing model isolates the start and auxiliary battery in a system where the auxiliary battery may be charged by solar panels, an external AC battery charger, or another external source. The SBI212D also allows the start battery to be charged by the external source once the auxiliary battery reaches 13.2V.
It features fault detection and LED indication of operation to warn the user of instances of voltage drop, over-voltage, or excessive current draw conditions. Its components prevent the solenoid from generating high voltage transients, making it better than a diode battery isolator.
| Part Number | SBI212D |
| Brand | REDARC |
| Max. Inrush Current | 600A |
| Max. Continuous Current | 200A |
| Turn On Voltage | 13.2V |
| Turn Off Voltage | 12.7V |
| Turn On Delay | 5 seconds |
| Turn Off Delay | 10 seconds |
| Standby Current | <5mA |
| Weight | 1.3 lb (600 g) |
| Height | 3.54" (90 mm) |
| Width | 3.74" (95 mm) |
| Depth / Length | 3.94" (100 mm) |
| Warranty | 2 Years |
| System Voltage | 12V |
| Output Voltage | 12V DC |
| Input Fuse Rating | 200A |
| Output Fuse Rating | 200A |
Universal application, not vehicle-specific.
Will it fit my vehicle?
See the Fitment section above. If you are unsure, email [email protected] before ordering and we will confirm fitment.
What warranty does it have?
REDARC covers this product with a 2-year warranty.
Should I have it professionally installed?
REDARC recommends installation by a qualified auto electrician or technician.
Why Choose Venture Overland Company: Free shipping on orders over $100, most orders ship in 1-2 business days, and every order is covered by our 30-day return policy.
Gear Up for Adventure
At Venture Overland Company, our motto is simple: Find Your Way. Whether you're hitting the backroads for a weekend escape or building the ultimate overland rig for months on the trail, we're here to help you get there. Every part we carry is chosen to give you the reliability, performance, and confidence to go farther and explore more. Load up, point the wheels off the pavement, and find your way—your adventure starts here.
Empowering Your Journey
At Venture Overland Company, we provide a carefully curated selection of top-tier brands and expert guidance to help you enhance your vehicle’s performance. Our community-driven approach ensures every product integrates seamlessly into your adventures, whether upgrading your Jeep, Toyota, or Ford. With our focus on quality, versatility, and outstanding service, we’re more than a store—we’re your partner in every off-road experience.
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