{"product_id":"huarew-80-amp-battery-isolator-12v-continuous-duty-relay-4-pin-spst-for-car-boat-rv-motorcycle","title":"HUAREW 80-Amp Battery Isolator \u0026 12V Continuous Duty Relay — 4‑Pin SPST for Car, Boat, RV, Motorcycle","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe HUAREW 80-amp Battery Isolator and 12V Continuous Duty Solenoid Relay is designed to help you manage two battery systems without unnecessary cross-drain. When installed, a secondary battery can be dedicated to a specific load—like an audio system or auxiliary electronics—while the primary battery powers starting and essential systems. The design emphasizes efficient current handling with minimal voltage drop, so your setup can perform consistently without compromising reliability.\u003c\/p\u003e\n\n\u003ch2\u003eKey Benefits\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh current capability: 80A continuous power with up to 150A surge, suitable for demanding setups.\u003c\/li\u003e\n  \u003cli\u003eLow standby draw: draws less than 1A when the engine is on, helping conserve battery energy.\u003c\/li\u003e\n  \u003cli\u003eVoltage-isolated second battery: prevents cross-charge and drain, preserving the life of auxiliary power.\u003c\/li\u003e\n  \u003cli\u003eEngine-off isolation: keeps the second battery disconnected when the engine isn’t running, reducing parasitic loads.\u003c\/li\u003e\n  \u003cli\u003eDurable construction: water-resistant black phenolic plastic with a rugged build for marine and mobile use.\u003c\/li\u003e\n  \u003cli\u003eBroad compatibility: designed to work with various alternators and charging systems; operates when ignition is on.\u003c\/li\u003e\n  \u003cli\u003eLong-term reliability: rated for a high number of mechanical cycles, supporting repeated on\/off operation.\u003c\/li\u003e\n  \u003cli\u003eEverything you need to install: kit includes 4x 80A terminals and 4x smaller power terminals for straightforward wiring.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eHow It Works\u003c\/h2\u003e\n\u003cp\u003eWhen the engine starts, the relay engages to connect the two batteries without introducing noticeable voltage drop on the secondary bank. Once the ignition is off, the isolator keeps the second battery isolated, reducing the chance of unnecessary discharge. This approach helps you retain essential power for critical loads while safeguarding the primary starting battery.\u003c\/p\u003e\n\n\u003ch2\u003eWhat You Get and Use Cases\u003c\/h2\u003e\n\u003cp\u003eIdeal for applications with multiple battery banks, including marine systems, mobile audio installations, off-road rigs, power sports vehicles, and more. The isolator is designed to be compatible with a wide range of setups, providing a straightforward way to add a secondary battery without compromising overall system performance.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eDedicated auxiliary power for stereo systems, lighting, and electronics.\u003c\/li\u003e\n  \u003cli\u003eProtection against primary battery discharge during off-vehicle or idle periods.\u003c\/li\u003e\n  \u003cli\u003eReliable switching aligned with ignition on, compatible with various charging configurations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eDurability and Installation Notes\u003c\/h2\u003e\n\u003cp\u003eConstructed from water-resistant materials and built for longevity, the HUAREW isolator is designed to endure the vibration and exposure common in cars, boats, and rugged environments. Follow the included wiring guidance to connect a dedicated secondary battery safely and effectively. If you ever encounter issues, customer support is available for replacements or assistance.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What does the HUAREW 80-Amp Battery Isolator do?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It isolates a second battery to support a dedicated load, reducing drain and helping maintain voltage when the engine is on.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Is this unit compatible with cars, boats, and motorcycles?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It supports 12V systems in cars, boats, RVs, and motorcycles, with reliable switching when the ignition is active.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"HUAREW","offers":[{"title":"Default Title","offer_id":42465423032405,"sku":"B0D7VJST8Q","price":28.97,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/huarew-80amp-battery-isolator-front-view.jpg?v=1778007186","url":"https:\/\/plentytorque.co.uk\/products\/huarew-80-amp-battery-isolator-12v-continuous-duty-relay-4-pin-spst-for-car-boat-rv-motorcycle","provider":"PlentyTorque","version":"1.0","type":"link"}