--- product_id: 123043634 title: "80-Amp Relay 12V Continuous Duty Solenoid Relay Battery Isolator and Relay" brand: "mayspare" price: "5784 kr" currency: ISK in_stock: true category: "May Spare" url: https://www.desertcart.is/products/123043634-80-amp-relay-12v-continuous-duty-solenoid-relay-battery-isolator store_origin: IS region: Iceland --- # 80A continuous current 12V continuous duty 150A surge max amps 80-Amp Relay 12V Continuous Duty Solenoid Relay Battery Isolator and Relay **Brand:** mayspare **Price:** 5784 kr **Availability:** ✅ In Stock ## Summary > ⚡ Power your adventure with unstoppable 80A relay precision! ## Quick Answers - **What is this?** 80-Amp Relay 12V Continuous Duty Solenoid Relay Battery Isolator and Relay by mayspare - **How much does it cost?** 5784 kr with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/123043634-80-amp-relay-12v-continuous-duty-solenoid-relay-battery-isolator) ## Best For - mayspare enthusiasts ## Why This Product - Trusted mayspare brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Engineered for 100,000 mechanical cycles, delivering unmatched durability for long-term reliability. - • **Surge-Ready Strength:** Withstands surges up to 150 amps, ensuring your vehicle or boat powers through peak demands effortlessly. - • **Powerhouse Performance:** Handles a robust 80 amps continuous current to keep your systems running smoothly without a hitch. - • **Plug & Play Installation:** Includes heavy-duty terminals and insulated caps for quick, secure setup—perfect for trucks, RVs, and boats. - • **Seamless Battery Isolation:** Automatically isolates dual batteries to protect your starting charge and optimize power management. ## Overview The MaySpare 80-Amp 12V Continuous Duty Solenoid Relay is a high-performance battery isolator designed for trucks, boats, and RVs. Featuring copper contacts with silver pins, it supports continuous 80A current and surges up to 150A, with a lifespan of 100,000 mechanical cycles. This relay ensures automatic switching and protects your starting battery charge, making it an essential upgrade for reliable power management in demanding environments. ## Description 80-Amp Relay 12V Continuous Duty Solenoid Relay Battery Isolator and Relay | High Current Starter Relay Sliver Pins,Protect Starting Charge While Running Car Audio, Automatic Switching For Truck,Boat,Rv: desertcart.com: Industrial & Scientific ## Features - Double Batteries Isolator Control On/Off Switch; Continuous Amps: 80,Surge Max Amps:150A ,Voltage: 12VDC; 100,000 mechanical cycle life./Normally Open With Attaching Hardware, Copper Contact With Sliver Pins - Max Switching Currecnt could pass 150A at 5ms ,and Max Switching power could be 2000W / Replace: White Rodgers: 120-105751, 120-105751-6, 120-901S1,120-107112/ Cummins 3916301 3916302 - Note: It requires constant voltage as but depending on the application. The working time could be around continuous four or five hours , stop it and then use it. - Install:The kit has included 4pcs big 100AMP terminals connected to loading and 4pcs small terminals which connected to original power. 4pcs insulated skin red cap. - high current relays are the most reliable and efficient way to add secondary batteries to your system; Provide better service, please contact us if you have any questions! ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07MV4WJ7K | | Best Sellers Rank | #23,511 in Automotive ( See Top 100 in Automotive ) #5 in Automotive Replacement Starter Solenoids | | Brand Name | MaySpare | | Coil Resistance | 18 ohm | | Coil Voltage | 12 volts | | Connector Type | Screw | | Contact Current Rating | 80 A | | Contact Material | Copper Silver | | Contact Type | Normally Open | | Current Rating | 80 A | | Customer Reviews | 4.5 4.5 out of 5 stars (471) | | Item Highlight | High Current Starter Relay Sliver Pins,Protect Starting Charge While Running Car Audio, Automatic Switching For Truck,Boat,Rv | | Manufacturer | May Spare Parts | | Maximum Switching Current | 1 A | | Minimum Switching Voltage | 13 volts_of_direct_current | | Model | US-4t500A | | Mounting Type | Screw Mount | | Number of Items | 1 | | Operation Mode | Continuous Duty | | Part Interchange Info | SGP38,6C017,120-901,120-105751,120-105751-6,120-901S1 | | Part Number | US-4t500A | | Specification Met | OEM | | UPC | 754111153130 | | Upper Temperature Rating | 80 °C | | Wattage | 2000 watts | ## Product Details - **Connector Type:** Screw - **Contact Material:** Copper Silver - **Contact Type:** Normally Open - **Current Rating:** 80 A - **Mounting Type:** Screw Mount ## Images ![80-Amp Relay 12V Continuous Duty Solenoid Relay Battery Isolator and Relay - Image 1](https://m.media-amazon.com/images/I/61s9d9XXu2L.jpg) ## Available Options This product comes in different **Size** options. ## Questions & Answers **Q: What do I need to be able to use as a switch between batteries and a 2000 watt inverter?** A: If all you want to do is disconnect/connect the batteries from the inverter remotely, you need a 12v switched source to the coil and a ground. It is just a single pole single throw switch. **Q: If contacts are copper, this does not meet requirements for 120-901. What is the actual contact material? What does silver pins mean?** A: Bought 2 and both coils failed **Q: The note "The working time could be around continuous four or five hours , stop it and then use it." What if I have a 8 hour road trip?** A: I took a road trip 24hrs one way drove 18 hrs the first day 6 hrs the second day then turn around 4 days later repeated in the middle of summer with no problem the relay i replaced was the same make and model butI probably not the original in my 1995 Chevy conversion van relay is for charging my back battery also left it running for 8hrs plus in 90- 100 degrees so my pets saying cool inside hope this helps **Q: Can us you be used for a plow** A: I believe this should work for a plow setup. Just double check the amp draw from the plow’s specs. --- ## 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.is/products/123043634-80-amp-relay-12v-continuous-duty-solenoid-relay-battery-isolator](https://www.desertcart.is/products/123043634-80-amp-relay-12v-continuous-duty-solenoid-relay-battery-isolator) --- *Product available on Desertcart Iceland* *Store origin: IS* *Last updated: 2026-09-21*