{"product_id":"uckasayfy-dual-battery-isolator-12v-140a-vsr-with-voltage-display-ip67-waterproof","title":"UCkasayfy Dual Battery Isolator 12V 140A VSR with Voltage Display, IP67 Waterproof","description":"\u003cp\u003e\u003cstrong\u003eUCkasayfy Dual Battery Isolator Kit is a 12V, 140A voltage-sensitive relay system that automatically manages and protects two lead-acid batteries while preventing one battery from draining the other.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis smart battery isolator kit combines a Voltage Sensitive Relay (VSR) with a clear voltage display and rugged IP67-rated housing so you can run accessories, start engines, and maintain battery health across vehicles, boats, RVs, trailers, ATVs and UTVs. It detects charging voltages and connects or disconnects the auxiliary battery at preset thresholds, allows manual reverse charging in emergencies, and includes over\/under-voltage safeguards. Note: this unit is not compatible with lithium batteries.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the UCkasayfy VSR decide when to join or separate batteries?\u003c\/h3\u003e\n\u003cp\u003eThe built-in VSR monitors system voltage and automatically connects the main and auxiliary batteries when charging voltage rises, then separates them when voltage drops. This ensures the starter battery remains charged for vehicle starts while auxiliary loads are powered from the secondary battery.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAutomatic cut-in at 13.3V and cut-out at 12.8V for reliable operation.\u003c\/li\u003e\n  \u003cli\u003eReal-time voltage display for instant status checks.\u003c\/li\u003e\n  \u003cli\u003eManual override for controlled reverse charging in emergencies.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat protections and environmental ratings does it offer?\u003c\/h3\u003e\n\u003cp\u003eSafety features disconnect the circuit if voltage is outside safe bounds and the enclosure is engineered to withstand harsh outdoor use. The unit includes both electrical and environmental protections to reduce risk and improve lifespan in demanding installations.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAutomatic disconnect when input voltage is below 11V or above 17V to prevent damage.\u003c\/li\u003e\n  \u003cli\u003eIP67 waterproof rating protects electronics from dust and water ingress.\u003c\/li\u003e\n  \u003cli\u003eRobust construction suitable for marine and off-road vibration conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhere and how can I use this dual battery isolator kit?\u003c\/h3\u003e\n\u003cp\u003eThe UCkasayfy 140A isolator is designed for a wide variety of vehicle and marine setups that use conventional lead-acid batteries. It helps preserve starter batteries, manage auxiliary loads, and support accessories without complex wiring or high-maintenance components.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits cars, trucks, RVs, boats, trailers, ATVs, UTVs, campers and marine applications using lead-acid batteries.\u003c\/li\u003e\n  \u003cli\u003eIdeal for powering winches, fridges, lights and inverters from a separate battery bank.\u003c\/li\u003e\n  \u003cli\u003eSimplifies battery management when storing vehicles or towing trailers to avoid drained starter batteries.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I use this isolator with lithium or modern battery chemistries?\u003c\/h3\u003e\n\u003cp\u003eThis model is built and calibrated for lead-acid battery charging profiles and safety limits; it is explicitly not suitable for lithium batteries. Installing it with lithium chemistry could prevent correct charging behavior or trigger protection disconnects.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eNot recommended for lithium, LiFePO4, or other non-lead-acid batteries.\u003c\/li\u003e\n  \u003cli\u003eUse only with compatible 12V lead-acid, AGM or flooded batteries for expected performance.\u003c\/li\u003e\n  \u003cli\u003eIf you have lithium batteries, select a dedicated lithium-compatible isolator or battery management solution.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The UCkasayfy Dual Battery Isolator Kit is aimed at owners of conventional 12V vehicles, boats, and off-road rigs who need an automatic, low-maintenance way to protect their starter battery while using auxiliary electrical loads. It suits DIY installers, fleet operators, outdoor enthusiasts and anyone who wants a straightforward VSR solution with clear voltage readout and rugged weatherproofing. If you use lithium batteries, choose a product specifically rated for that chemistry instead.\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: Is this isolator suitable for lithium batteries?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The UCkasayfy unit is calibrated for lead-acid batteries and is not compatible with lithium chemistries.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What are the VSR cut-in and cut-out voltages?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The relay cuts in at 13.3V and cuts out at 12.8V for automatic battery connection management.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"UCkasayfy","offers":[{"title":"Default Title","offer_id":48083899678878,"sku":"B0DLWCQZXS","price":88.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/uckasayfy-front-view-mounted.jpg?v=1785839329","url":"https:\/\/northtrailauto.ca\/products\/uckasayfy-dual-battery-isolator-12v-140a-vsr-with-voltage-display-ip67-waterproof","provider":"North Trail Auto","version":"1.0","type":"link"}