--- product_id: 472224145 title: "Heart Horse 12V 140A Split Charge Relay,VSR Dual Battery Isolator" brand: "heart horse" price: "R1331" currency: ZAR in_stock: true category: "Heart Horse" url: https://www.desertcart.co.za/products/472224145-heart-horse-12v-140a-split-charge-relay-vsr-dual-battery store_origin: ZA region: South Africa --- # 140A high current rating Real-time LED voltage display IP68 waterproof & dustproof housing Heart Horse 12V 140A Split Charge Relay,VSR Dual Battery Isolator **Brand:** heart horse **Price:** R1331 **Availability:** βœ… In Stock ## Summary > πŸ”Œ Power up your adventures with smart, seamless dual-battery charging! ## Quick Answers - **What is this?** Heart Horse 12V 140A Split Charge Relay,VSR Dual Battery Isolator by heart horse - **How much does it cost?** R1331 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/472224145-heart-horse-12v-140a-split-charge-relay-vsr-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 - β€’ **Flexible Control Modes:** Switch seamlessly between automatic voltage-sensitive operation and manual override for full control. - β€’ **Rugged IP68 Protection:** Durable, weatherproof design built to withstand harsh vehicle and marine environments. - β€’ **Instant Voltage Insight:** Built-in LED display lets you monitor battery voltage in real timeβ€”no extra tools needed. - β€’ **Precision Voltage Thresholds:** Connects at 13.3V and disconnects at 12.8V to protect your auxiliary battery and extend battery life. - β€’ **Smart Dual-Battery Management:** Automatically isolates and connects batteries to optimize charging without draining your starter battery. ## Overview The Heart Horse 12V 140A Split Charge Relay is a high-performance voltage sensitive relay designed for dual-battery systems in campervans, boats, and 4x4s. Featuring a real-time LED voltage display, automatic and manual control modes, and IP68-rated rugged housing, it ensures efficient battery charging and protection by connecting at 13.3V and disconnecting at 12.8V. Ideal for professional-grade vehicle power management, it supports up to 140 amps and is engineered for demanding environments. ## Description Heart Horse 12V 140A Split Charge Relay,VSR Dual Battery Isolator | 12V 140A VSR with LED voltage display, auto/manual modes and 13.3V cut-in/12.8V cut-out for campervans, boats and RVs. : desertcart.co.uk: Automotive ## Features - SMART 12V DUAL-BATTERY CHARGING – The 140A voltage sensitive relay connects your starter and auxiliary batteries when charging voltage rises and isolates them when voltage falls, helping charge a second battery without unnecessarily draining the starter battery. - REAL-TIME LED VOLTAGE DISPLAY – Check system voltage at a glance without connecting a separate voltmeter. The built-in digital display makes it easier to monitor battery voltage during installation, charging and everyday use. - AUTO & MANUAL CONTROL MODES – Use voltage-sensitive automatic operation for everyday charging, or switch to manual control when you need direct control of the relay connection. Clear indicators make the operating status easy to check. - 13.3V CUT-IN & 12.8V CUT-OUT – The VSR automatically connects at approximately 13.3V and disconnects at approximately 12.8V to separate the auxiliary battery when charging voltage is no longer available. IP68 housing helps protect the relay in demanding vehicle and marine installations. - CHECK YOUR CHARGING SYSTEM BEFORE BUYING – Designed for compatible conventional 12V alternator dual-battery systems in campervans, motorhomes, 4x4s, trucks and boats. Check your alternator type, battery chemistry, cable size and fuse requirements before installation.（Ternary lithium batteries cannot be used.οΌ‰ ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0B9GMP4SZ | | Best Sellers Rank | 8,820 in Automotive ( See Top 100 in Automotive ) 16 in Car Relays | | Brand | Heart Horse | | Coil Voltage | 12 Volts | | Contact Current Rating | 140 Amps | | Contact Material | Copper | | Contact Type | Normally Open | | Country Of Origin | China | | Current Rating | 140 Amps | | Customer Reviews | 4.4 4.4 out of 5 stars (321) | | Item Highlight | 12V 140A VSR with LED voltage display, auto/manual modes and 13.3V cut-in/12.8V cut-out for campervans, boats and RVs. | | Manufacturer | TripleWaterTripleGood | | Manufacturer Part Number | sku3426-yy | | Minimum Switching Voltage | 12.8 Volts (DC) | | Model Number | sku3426-yy | | Mounting Type | Screw Mount | | Operation Mode | Automatic | | Specification Met | ip68 | | Wattage | 1680 watts | ## Product Details - **Brand:** Heart Horse - **Contact material:** Copper - **Contact type:** Normally Open - **Current rating:** 140 Amps - **Mounting type:** Screw Mount ## Images ![Heart Horse 12V 140A Split Charge Relay,VSR Dual Battery Isolator - Image 1](https://m.media-amazon.com/images/I/412gOV1SO-L.jpg) ![Heart Horse 12V 140A Split Charge Relay,VSR Dual Battery Isolator - Image 2](https://m.media-amazon.com/images/I/51d-m3uMLsL.jpg) ![Heart Horse 12V 140A Split Charge Relay,VSR Dual Battery Isolator - Image 3](https://m.media-amazon.com/images/I/51jDtFacm7L.jpg) ![Heart Horse 12V 140A Split Charge Relay,VSR Dual Battery Isolator - Image 4](https://m.media-amazon.com/images/I/61xoY8PBPsL.jpg) ![Heart Horse 12V 140A Split Charge Relay,VSR Dual Battery Isolator - Image 5](https://m.media-amazon.com/images/I/51iV5n1Cm6L.jpg) ## Available Options This product comes in different **Size** options. ## Frequently Bought Together - Heart Horse Split Charge Relay 12V 140 Amp Smart Dual Battery Isolator Manual/Auto Modes VSR-Voltage Sensitive Relay,with LED Screen Voltage Display, Fit for ATV, UTV, Boat, RV,Camper Vehicle - KAOLALI IP65 Waterproof 12V/24V Switch Panel, Toggle Switch Panel, Dual USB Charger Port 4.2A, Lighter Socket, Digital Voltmeter Display, Car Rocker Switches for Car Boat RV Truck Campervan(Blue) - Bolatus Battery Isolator Switch 12V 24V 48V Battery Switch 275A Battery Kill Switch 1-2-Both-OFF Battery Cut Off Switch for Car Truck Boat Yacht Caravan Motorcycle --- ## 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.co.za/products/472224145-heart-horse-12v-140a-split-charge-relay-vsr-dual-battery](https://www.desertcart.co.za/products/472224145-heart-horse-12v-140a-split-charge-relay-vsr-dual-battery) --- *Product available on Desertcart South Africa* *Store origin: ZA* *Last updated: 2026-09-02*