--- product_id: 80308721 title: "Keenso Voltage Sensitive Relay, Battery Isolator, Dual Intelligent Isolation, 125A Capacity, DC12V, Screw Terminal, For Trucks, Cars, Motorcycles, Boats, RVs, Generators, Solar Systems" brand: "keenso" price: "246.69 DT" currency: TND in_stock: true reviews_count: 12 category: "Keenso" url: https://www.desertcart.tn/products/80308721-keenso-voltage-sensitive-relay-battery-isolator-dual-intelligent-isolation-125a store_origin: TN region: Tunisia --- # 140A heavy-duty current capacity Flexible panel or surface mount installation Fiberglass reinforced nylon for durability Keenso Voltage Sensitive Relay, Battery Isolator, Dual Intelligent Isolation, 125A Capacity, DC12V, Screw Terminal, For Trucks, Cars, Motorcycles, Boats, RVs, Generators, Solar Systems **Brand:** keenso **Price:** 246.69 DT **Availability:** ✅ In Stock ## Summary > 🔋 Keep your dual-battery system charged and ready—because downtime is not an option! ## Quick Answers - **What is this?** Keenso Voltage Sensitive Relay, Battery Isolator, Dual Intelligent Isolation, 125A Capacity, DC12V, Screw Terminal, For Trucks, Cars, Motorcycles, Boats, RVs, Generators, Solar Systems by keenso - **How much does it cost?** 246.69 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/80308721-keenso-voltage-sensitive-relay-battery-isolator-dual-intelligent-isolation-125a) ## Best For - keenso enthusiasts ## Why This Product - Trusted keenso brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Fiberglass reinforced nylon housing resists aging and abrasion for long-term reliability - • **Install Your Way:** Versatile mounting options for easy, no-fuss setup in any vehicle - • **Peace of Mind Guaranteed:** Backed by responsive 24-hour customer support and product warranty - • **Smart Battery Management:** Automatically charges your secondary battery only when the starter battery is sufficiently charged - • **Power Up Without Compromise:** 140A dual battery isolator ensures seamless charging without voltage loss ## Overview The Keenso VSR Voltage Sensitive Relay is a 12V, 140A dual battery isolator designed for dual battery vehicles. It features flexible mounting options, a durable fiberglass reinforced nylon build, and smart automatic charging that prevents voltage loss. Ideal for ensuring reliable starts and efficient battery management, it comes with a product guarantee and dedicated customer support. ## Description Keenso Voltage Sensitive Relay, Battery Isolator, Dual Intelligent Isolation, 125A Capacity, DC12V, Screw Terminal, For Trucks, Cars, Motorcycles, Boats, RVs, Generators, Solar Systems : desertcart.co.uk: Automotive Review: Highly recommended! - Worked well, fitted to a horsebox to enable a split charge system to operate correctly. Working well, has been fitted for a couple of months now and no further battery problems occurring! Review: Does what it says on the tin! - See this brand of relay often being sold in the more expensive split charge relay motorhome kits. Was much cheaper to buy this and then buy the wiring separately as I only needed shorter bits for my own set up. ## Features - 【Easy Installation】The 12V VSR voltage sensitive relay with or panel mount options, which provides flexibility during installation. No voltage loss compared to battery isolator diodes (0.6V). Combined/Open Voltage: DC 13.3V/12.8V - 【140 Amp Dual Battery Isolator Smart Isolator】 The voltage sensitive relay of the dual battery isolator is all you need to battery systems. Its dimensions fit heavy-duty modular boxes (BF43X) and battery switches, which correspond to common products on the market. - 【Premium Quality】The voltage sensitive charging relay is made of fiberglass reinforced nylon, sturdy and It is not easy to age and abrasion resistant, ensures maximum strength and durability for long lasting use. - 【IDEAL FOR DUAL BATTERY VEHICLES】140A 12V Voltage Sensitive Split Relay Kit (VSR) is the best way to ensure that you can always start your dual battery vehicle. Once your main starter battery is sufficiently charged, it will start charging the second battery. - 【WHAT YOU WILL GET】We stand behind all our items with a product guarantee and are committed to providing you with the best customer service. If you have any problem about the voltage sensitive separator relay, please contact us by email, we will try our best to reply you within 24 hours. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07H9YTL86 | | Best Sellers Rank | 371,444 in Automotive ( See Top 100 in Automotive ) 1,547 in Car Relays | | Brand | Keenso | | Coil Voltage | 12 Volts | | Connector Type | Screw | | Contact Current Rating | 140 Amps | | Contact Material | Copper | | Contact Type | Normally Open | | Country Of Origin | China | | Current Rating | 125 Amps | | Customer Reviews | 4.4 4.4 out of 5 stars (79) | | Item Weight | 231 g | | Manufacturer | Keenso | | Manufacturer Part Number | Keenso3qbp5t80ug | | Maximum Switching Voltage | 12 Volts | | Model Number | Keenso3qbp5t80ug | | Mounting Type | Surface Mount | | Number of Terminals | 3 | | Operation Mode | Automatic | | Specification Met | CE IP67 | | UPC | 792117030956 | ## Product Details - **Connector type:** Screw - **Contact material:** Copper - **Contact type:** Normally Open - **Current rating:** 125 Amps - **Mounting type:** Surface Mount ## Images ![Keenso Voltage Sensitive Relay, Battery Isolator, Dual Intelligent Isolation, 125A Capacity, DC12V, Screw Terminal, For Trucks, Cars, Motorcycles, Boats, RVs, Generators, Solar Systems - Image 1](https://m.media-amazon.com/images/I/51VlXMsyypL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Highly recommended! *by T***Y on 6 January 2021* Worked well, fitted to a horsebox to enable a split charge system to operate correctly. Working well, has been fitted for a couple of months now and no further battery problems occurring! ### ⭐⭐⭐⭐⭐ Does what it says on the tin! *by N***E on 13 March 2019* See this brand of relay often being sold in the more expensive split charge relay motorhome kits. Was much cheaper to buy this and then buy the wiring separately as I only needed shorter bits for my own set up. ### ⭐⭐⭐⭐⭐ works fine as far as I can see *by D***Y on 21 April 2022* works fine as far as I can see --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/80308721-keenso-voltage-sensitive-relay-battery-isolator-dual-intelligent-isolation-125a](https://www.desertcart.tn/products/80308721-keenso-voltage-sensitive-relay-battery-isolator-dual-intelligent-isolation-125a) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-01*