--- product_id: 635491078 title: "6M 12V 140 Amp Split Charge Relay Kit,Dual Battery Isolator VSR Relays Kit" brand: "heart horse" price: "24200 som" currency: KGS in_stock: true reviews_count: 13 category: "Heart Horse" url: https://www.desertcart.kg/products/635491078-6m-12v-140-amp-split-charge-relay-kit-dual-battery store_origin: KG region: Kyrgyzstan --- # 140A high current rating IP68 waterproof & dustproof Built-in LED voltmeter 6M 12V 140 Amp Split Charge Relay Kit,Dual Battery Isolator VSR Relays Kit **Brand:** heart horse **Price:** 24200 som **Availability:** ✅ In Stock ## Summary > 🔌 Never get stranded again — power up smarter, wherever the road takes you! ## Quick Answers - **What is this?** 6M 12V 140 Amp Split Charge Relay Kit,Dual Battery Isolator VSR Relays Kit by heart horse - **How much does it cost?** 24200 som with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/products/635491078-6m-12v-140-amp-split-charge-relay-kit-dual-battery) ## Best For - heart horse enthusiasts ## Why This Product - Trusted heart horse brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Real-Time Voltage Monitoring:** Integrated LED voltmeter with manual/auto mode lets you track battery health anytime. - • **Complete DIY Installation Kit:** Includes all cables, terminals, fuses, and accessories for hassle-free setup in under an hour. - • **Rugged All-Weather Durability:** IP68 waterproof, dustproof, and vibration-resistant design built for extreme conditions. - • **Smart Dual Battery Management:** Automatically isolates and charges two batteries to keep your vehicle powered and ready. - • **Universal Vehicle Compatibility:** Perfect for trucks, RVs, ATVs, boats, and more — power your adventures without compromise. ## Overview The Heart Horse 6m Split Charge Relay Kit is a 12V 140 Amp smart dual battery isolator with a built-in LED voltmeter and manual/auto switching modes. Designed for seamless dual battery management, it automatically charges your secondary battery while protecting your main battery from over-discharge. Its IP68 waterproof and vibration-proof construction ensures reliable performance in harsh environments. The kit includes all necessary installation accessories, making it ideal for trucks, RVs, ATVs, boats, and other vehicles needing dependable dual battery power solutions. ## Description Product Description 6m Split Charge Relay Kit,This 12V 140 Amp Dual Battery Isolator Kit will come with all necessary accessoires for convenient use. Dual Battery Isolator Kit 12V Heart Horse Dual Battery Isolator 12V 140 Amp with Voltage Display Smart Battery Isolator Auto & Manual Mode Voltage Sensitive Relay (VSR) Kit for ATV, UTV, Boat, RV, Camper 5 Wheel Off-Road Vehicle The dual battery isolator kit enables your accessories to run from a separate battery while the engine is not running on your vehicle while keeping your main battery charged and your vehicle always ready to go and start when you want it to. This dual battery isolator kit features 12 Volt 140 Amp Voltage Sensitive Relay Isolator and includes all the bits and pieces needed for a complete installation. Features Has Automatic/Manual Two Mode,The design of the digital voltage display not only facilitates real-time grasp of battery power, but also allows precise control of battery voltage. Function: Cut in voltage is 13.3V and Cut out voltage is 12.8V. Two 12V batteries are connected in parallel through this voltage sense relay. Lettng the car generator charge both batteries (Starter battery and a leisure battery). Design for two battery systems isolate and charge, and it allow to have two separate power sources while charging by one alternator. IP68 Waterproof：this voltage sensitive relay is heavy built to suitable for almost anywhere even off-road,which is water resistant, shock resistant, dust proof and withstand unexpected extreme weather environments.this product is the ultimate power solution for all off-road and road trips! Widely used for car, vehicle, RV, ATV, UTV and boat, also two battery electrical equipment Voltage Sensitive Relay (VSR) Kit 12V 140A VSR Digital Display Voltage Sensitive Relay 12 Volt 140 Amp Dual Battery Isolator is all you need to charge Two Battery Systems. Voltage Sensitive Relay (VSR) cuts in at 13.3 volts and cuts out at 12.8 volts to ensure your primary battery is always charged and ready to start your vehicle. It's like having two separate power sources for each battery while only having one alternator! Specification： Cut-in Voltage：13.3V Cut-out Voltage：12.8V Recommended fuse：80Amp Terminal Studs|：M6 copper screw nut (1/4inch) Waterproof Rate：IP68 Manual and Auto Modes Long press the "Power" button for 3 seconds - the blue (LED) indicator will be ON, the manual mode is on. Long press the "Power" button for 3 seconds - the blue (LED) indicator will be OFF, the auto mode is on. Voltmeter Display If two batteries are connected, then the voltage displayed on the voltmeter is the battery that has a higher voltage. Connect the battery that you want to test. When the voltmeter is not working, press the button once, the voltmeter will display the value for 2 seconds. Silicon Sealed Internal Layer enhanced with a silicon-sealed internal layer,designed to excel in the most demanding conditions.it is built to withatand extreme vibrations and perform flawlessly in intense weather environments. Package Included: Total Red Cable length 6mtrs 1 x Battery isolator; 4 x PVC red main power cable(5m/0.5m/0.25m/0.25m)；1 x black earth cable; 10 x Black Nylon Cable Ties; 10 x Adhesive Cable Tie Fixing Bases; 2 x Fuse Holders；4 x Fuses 60A; 15 x Fixing Screws; 6 x Red Heat Shrink Covers；1 x Black Heat Shrink Covers; 1 x Positive Marine Battery Terminals (red)；1 x Negative Marine Battery Terminals (black); 2 x SC16-8 Copper Crimp Lugs；4 x Insulated Blue Ring Terminal；4 x Installation Screw; 1x Easy to Understand Fitting Instructions; Review: Can recommend - Works perfect. Review: Good quality, easy installation - Super easy to install, watched a couple of YouTube videos and done it myself with in the hour. ## Features - 【SMART BATTERY ISOLATOR】Split Charge Relay has a built-in voltmeter to display the voltage and supports manual/automatic switching, so you can monitor the voltage at any time and switch modes as needed. - 【NEVER BE STRANDED】The dual battery isolator is connected to both the vehicle's primary and secondary batteries. When the vehicle's primary battery reaches 13.3V, the voltage-sensitive relay automatically switches to charge the secondary battery, and when the vehicle's primary battery voltage drops to 12.8V, the battery isolator cuts off the current flow to the secondary battery, ensuring you always have enough power to start your motor and never get stranded. - 【EASY INSTALLATION】The VSR split charge relay kit comes with full installation accessories and cables (battery cables, battery terminals, copper lugs, heat shrinks, cable ties ects) All necessary accessoires for convenient use and You don't need to buy extra accessories,that make it easy for users to install it independently to vehicles, boats, recreational vehicles, and other equipment. - 【SAFE&EFFICIENT 】The dual battery isolator efficiently manages and protects power, preventing over-discharge of the main battery and ensuring full charging of the second battery. With high-quality materials and an IP68 waterproof, dustproof, and vibration-proof construction, our battery isolator delivers reliable performance even in harsh environments. - 【WIDE APPLICATION】 Like Having Two Separate Power Sources,The Dual Battery Isolator Set Enables Your Accessories to Run From a Separate Battery While the engine is not running on your vehicle While keeping your Main Battery Charged,power up any ground or marine vehicle including ATVs, boats, cars, mini-vans, trucks, RVs, and yachts; Perfect versatile solution for all automotive power needs. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CY23GWRM | | Best Sellers Rank | 3,745 in Automotive ( See Top 100 in Automotive ) 5 in Car Relays | | Brand | Heart Horse | | Coil Voltage | 12 Volts | | Connector Type | Clamp | | Connector type | Clamp | | Contact Current Rating | 140 Amps | | Contact Material | Silver Alloy | | Contact Type | Normally Closed | | Contact material | Silver Alloy | | Contact type | Normally Closed | | Country Of Origin | China | | Current Rating | 140 Amps | | Current rating | 140 Amps | | Customer Reviews | 4.4 out of 5 stars 498 Reviews | | Item Weight | 1130 Grams | | Manufacturer | YYGS_AMZgb | | Manufacturer Part Number | sku3919-yy | | Minimum Switching Voltage | 13.3 Volts (DC) | | Model Number | sku3919-yy | | Mounting Type | DIN Rail Mount | | Mounting type | DIN Rail Mount | | Number of Terminals | 2 | | Operation Mode | Automatic | | Specification Met | ABS | | Wattage | 1680 watts | ## Product Details - **Connector type:** Clamp - **Contact material:** Silver Alloy - **Contact type:** Normally Closed - **Current rating:** 140 Amps - **Mounting type:** DIN Rail Mount ## Images ![6M 12V 140 Amp Split Charge Relay Kit,Dual Battery Isolator VSR Relays Kit - Image 1](https://m.media-amazon.com/images/I/71TQwvik+wL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Can recommend *by S***R on 9 December 2025* Works perfect. ### ⭐⭐⭐⭐⭐ Good quality, easy installation *by F***3 on 13 March 2026* Super easy to install, watched a couple of YouTube videos and done it myself with in the hour. ### ⭐⭐⭐⭐⭐ Chaaaaaaaaaaarge!!! *by D***N on 22 February 2026* Great kit and super easy to install. Charges both batteries up brilliantly. Good price and quality. Happy with purchase and definitely recommend. --- ## 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.kg/products/635491078-6m-12v-140-amp-split-charge-relay-kit-dual-battery](https://www.desertcart.kg/products/635491078-6m-12v-140-amp-split-charge-relay-kit-dual-battery) --- *Product available on Desertcart Kyrgyzstan* *Store origin: KG* *Last updated: 2026-08-01*