--- product_id: 86240690 title: "Smart Start SBI 12V 100A" brand: "redarc" price: "NZ$425" currency: NZD in_stock: true reviews_count: 3 category: "Redarc" url: https://www.desertcart.nz/products/86240690-smart-start-sbi-12v-100a store_origin: NZ region: New Zealand --- # Microprocessor-controlled power management 12V DC, 100A continuous rating Full surge protection & fault detection Smart Start SBI 12V 100A **Brand:** redarc **Price:** NZ$425 **Availability:** βœ… In Stock ## Summary > πŸ”Œ Power your adventures without compromise! ## Quick Answers - **What is this?** Smart Start SBI 12V 100A by redarc - **How much does it cost?** NZ$425 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.nz](https://www.desertcart.nz/products/86240690-smart-start-sbi-12v-100a) ## Best For - redarc enthusiasts ## Why This Product - Trusted redarc brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Power-Saving Tech:** Low standby current draw maximizes battery life and efficiency on the move. - β€’ **Real-Time Fault Alerts:** LED indicators warn you instantly of voltage drops, over-voltage, or excessive current draw. - β€’ **Compact & Durable Design:** Overmolded, marine-grade silver contacts ensure longevity and easy installation in tight spaces. - β€’ **Reliable Surge Protection:** Built-in safeguards protect your vehicle’s electrical system from damaging voltage spikes. - β€’ **Smart Dual Battery Management:** Seamlessly isolates and charges your auxiliary battery without draining your starter battery. ## Overview The REDARC Smart Start SBI12 is a microprocessor-controlled 12V, 100A battery isolator designed for dual battery systems in 4WD and commercial vehicles. It efficiently manages charging between starter and auxiliary batteries, prevents excessive discharge, and features low standby current, fault detection with LED alerts, and full surge protection. Compact and durable with marine-grade silver contacts, it ensures reliable, long-lasting performance on the road or off. ## Description The REDARC Smart Start? SBI12 is a microprocessor-controlled battery isolator which protects the start battery from excessive discharge, while allowing the auxiliary battery to supply charge to non-essential loads. It is used as a solenoid priority system in dual battery systems and provides 12V DC incorporating 100A of continuous ratings. The SBI range manages battery charge for your secondary battery while on the move. Power saving technology The battery isolator is mostly used in 4WD and commercial vehicles. It incorporates electronic components that prevents the solenoid from generating high voltage transients. Due to the voltage drop associated with diode type isolation, it's better than a diode battery isolator. A low standby current draw and fault detection and LED indication of operation warns users of faults such as voltage drops, over-voltage, and excessive current draw conditions. Safely maintain the charge your dual battery system with the Smart Start SBI12 battery isolator. Features: Overmold design Compact size and easy to install Silver contacts ensure longer life and suitable for marine applications Power saving technology Fault indication Fully surge protected Need help? For help in choosing the best dual battery setup for your needs use the free?REDARC dual battery selector. Not sure what dual battery system is best for your vehicle? Let Shaun Whale explain more. California residents: see?Proposition 65 information Review: The BEST BATTERY ISOLATOR you can buy πŸ‘πŸ‘ - Recieved here in the Philippines. πŸ‘ The REDARC Battery Isolator is the best. Salute! My main Battery was on 14.02V. Then my 2nd Battery was on 14.01V. (No load) But even when using it with 12V Fridge and Light it only takes me (max) 1hour to Fully Recharge my 2nd/Aux 100AH Battery. No stress! By the way i'm using guage #4 pure Copper wire (5.5 meters) & 60Amp FUSE. No problem so far. πŸ‘ Thank you desertcart πŸ™ Review: Love this thing - Added this to my Polaris RZR second battery and works like it should. It isolates the secondary battery from the primary (starting) battery and then engages when the starting battery is sufficiently charged. Has the ability to bridge the two batteries, if needed, and works as it should. My experience with other products from the same brand are that they make quality components. This is my experience with this one also. ## Features - MPN::SBI12 - Brand::Redarc ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B077NDB1CB | | Best Sellers Rank | #986,164 in Automotive ( See Top 100 in Automotive ) #1,796 in Battery Chargers | | Brand | REDARC | | Customer Reviews | 4.7 4.7 out of 5 stars (22) | | Date First Available | May 19, 2018 | | Is Discontinued By Manufacturer | No | | Item Weight | 9.1 ounces | | Item model number | RDC-SBI12 | | Manufacturer | Redarc | | Manufacturer Part Number | SBI12 | | Product Dimensions | 3.5 x 3.5 x 3 inches | ## Product Details - **Amperage:** 100 Amps - **Battery Cell Composition:** Lead Acid - **Brand:** REDARC - **Vehicle Service Type:** RV, Truck - **Voltage:** 12 Volts ## Images ![Smart Start SBI 12V 100A - Image 1](https://m.media-amazon.com/images/I/61IRAbgpR2L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ The BEST BATTERY ISOLATOR you can buy πŸ‘πŸ‘ *by M***. on July 2, 2023* Recieved here in the Philippines. πŸ‘ The REDARC Battery Isolator is the best. Salute! My main Battery was on 14.02V. Then my 2nd Battery was on 14.01V. (No load) But even when using it with 12V Fridge and Light it only takes me (max) 1hour to Fully Recharge my 2nd/Aux 100AH Battery. No stress! By the way i'm using guage #4 pure Copper wire (5.5 meters) & 60Amp FUSE. No problem so far. πŸ‘ Thank you Amazon πŸ™ ### ⭐⭐⭐⭐⭐ Love this thing *by M***N on May 19, 2023* Added this to my Polaris RZR second battery and works like it should. It isolates the secondary battery from the primary (starting) battery and then engages when the starting battery is sufficiently charged. Has the ability to bridge the two batteries, if needed, and works as it should. My experience with other products from the same brand are that they make quality components. This is my experience with this one also. ### ⭐⭐⭐⭐⭐ πŸ‘Œ *by A***I on September 9, 2020* 😍 ## Frequently Bought Together - Smart Start SBI 12V 100A - MEGA/AMG Fuse, 298 Series, Bolt Down - Automotive/Marine (Fuse Holder) - Bussmann AMG-100 AMG High-Current Stud Mount Fuse - 100 Amp Rating,Black --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.nz/products/86240690-smart-start-sbi-12v-100a](https://www.desertcart.nz/products/86240690-smart-start-sbi-12v-100a) --- *Product available on Desertcart New Zealand* *Store origin: NZ* *Last updated: 2026-05-16*