SKU: 33478967642

Dual Sensing Smart Battery Isolator 12V 200A - REDARC

Sale price$173.25 Regular price$192.50
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Description

Dual Sensing Smart Battery Isolator 12V 200A - REDARCThe REDARC Smart Start SBI212D is a 12v 200A dual battery isolator used in a dual battery system. It is designed to protect the start battery from excessive discharge while allowing the auxiliary battery to supply non essential loads. 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

The REDARC Smart Start® SBI212D is a 12v 200A dual battery isolator used in a dual battery system. It is designed to protect the start battery from excessive discharge while allowing the auxiliary battery to supply non-essential loads. 

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.

The SBI range facilitates additional charge via your vehicle’s alternator. Equipped with full surge protection, the power saving technology of the SBI212D is used primarily in 4WD and commercial vehicles and provides a safe way to charge an auxiliary battery.

Features:

  • Overmold design
  • Compact size and easy installation
  • Silver contacts for longer life and suitable for marine applications
  • Power saving technology
  • Fault indication
  • Fully surge protected

Product Brochure
Instruction Manual

Specs:

Output Voltage 12VDC
Output Current Rating (Cont.) 200A
Input Current (Max.) 200A
Input Fuse Rating 200A
Output Fuse Rating 200A
Length (in) 3.94
Width (in) 3.74
Height (in) 3.54
Warranty 2 Years
Weight (lb) 1.32

California residents: see Proposition 65 information

Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 33478967642

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4.5 ★★★★★
Based on 5 reviews
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Verified Purchase
Smoke
Belleville, US
★★★★★ 5
Great value and easy to install!
Color: Black, Color: Black
I only needed 3 of the 4 shelves so I have one as a backup! Very easy to install as well. The shelves feel sturdy and I’ve never had any issues!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2026
K
Verified Purchase
Kinny
Port Orchard, US
★★★★★ 4
quality matches cost + instructions unnecessarily tedious
Color: Brown, Color: Brown
The material is real wood but don't assume that means quality - it's still very cheap feeling, and very lightweight. But once installed they are quite stable, and they look great from afar. I got a darker colored one and the stain does come off very easily. One of the shelves had a huge manufacturer sticker on it and it took off the stain when I removed it, and a bit of the stain also came off when I wiped the shelves down with a wet cloth. It'll be dry dusting from now on, I suppose. Also, they did not fit snugly into the corner - when one side is pushed flush to the wall, it forces the other side to pull away from the wall a little bit. It wasn't a drastic space, maybe like 1/8th of an inch, but it is still something to note. I am fine with the cheap quality as they are, after all, pretty cheap, so I'd say they are worth exactly as much as they cost. Personally I am happy with the purchase - just thought I'd warn. Secondly - if you want to follow the instructions exactly, you will need two people unless you have inhuman agility. But I also think the instructions were a bit asinine and tedious. They want you to line up the LOOSE shelf and brackets with a leveler to mark where the brackets go on the wall, then put in the wall screws, hang the brackets on them, balance the shelf on the brackets to mark on the SHELF where the brackets will be attached, take the brackets off the wall to screw them into the shelf, then put the combined shelf-bracket unit once again on the wall screws and finally screw those in tight. In hindsight, you can just mark where the brackets should go on the SHELF (not wall), screw the brackets into the shelves, THEN level the shelf on the wall and screw the whole unit into the wall together. We were really baffled why the instructions didn't have us do that instead of spending extra time (and frustration) trying to juggle all the loose pieces and tools. But I'm not engineer-minded, nor have I ever installed corner shelves before, so maybe there would be some kind of issue with doing it that way that I can't predict.
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Reviewed in the United States on June 10, 2024
A
Verified Purchase
Antonia
Birmingham, US
★★★★★ 5
Good shelving decor
Color: Black
Easy to install and perfect for a corner display of Disney decor. They are lightweight, so we didn't put anything heavy on them, but the brackets seem sturdy enough that we could probably put something moderately weighty on them.
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Reviewed in the United States on November 25, 2025
M
Verified Purchase
Monica
Bozeman, US
★★★★★ 5
GREAT BUY
Color: Natural Wood
LOVE these shelves! Got them for each side of the bed to put books. Really elevates the room, and is cuter than just a simple straight book shelf.
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Reviewed in the United States on February 9, 2026
C
Verified Purchase
Chris K.
Phoenix, US
★★★★★ 3
Not made well
Color: Natural Wood
Not made well. Wood had some warping. Only 2 screws per bracket. Not very sturdy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 19, 2025

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