{"product_id":"uckasayfy-dual-battery-isolator-12v-140a-vsr-with-voltage-display-and-ip67-waterproof","title":"UCkasayfy Dual Battery Isolator 12V 140A VSR with Voltage Display and IP67 Waterproof","description":"\u003cp\u003e\u003cstrong\u003eThe UCkasayfy Dual Battery Isolator 12V 140A is a voltage-sensitive relay that automatically manages charge between two 12V lead-acid batteries, protecting your starter battery while charging an auxiliary battery—note: not compatible with lithium batteries.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eDesigned for vehicles, trailers, and marine use, this compact 140-amp VSR isolates and connects batteries based on voltage thresholds so your primary battery stays ready to start the engine. The unit displays battery voltage, offers IP67 water resistance for harsh conditions, and includes protection against extreme input voltages. It’s a simple way to add a second battery without complex wiring or failure-prone manual switching.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the isolator decide when to connect or disconnect the batteries?\u003c\/h3\u003e\n\u003cp\u003eThe UCkasayfy VSR monitors system voltage and uses preset cut-in and cut-out levels to join or separate the batteries automatically. When the alternator raises the voltage high enough, the relay links the starter and auxiliary batteries to charge both; when voltage drops, it isolates them to preserve starting power.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eConnects (cuts in) at 13.3 V, ensuring charging begins only when the alternator is active.\u003c\/li\u003e\n  \u003cli\u003eDisconnects (cuts out) at 12.8 V to protect the starter battery from deep discharge.\u003c\/li\u003e\n  \u003cli\u003eVoltage display on the device lets you monitor battery health at a glance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat protections and durability features does this unit provide?\u003c\/h3\u003e\n\u003cp\u003eThis isolator includes built-in safeguards to prevent damage from abnormal voltages and environmental exposure. It automatically disconnects if input voltage falls below 11 V or exceeds 17 V, and its IP67 rating shields the electronics from dust and water ingress.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAutomatic circuit cutoff below 11 V and above 17 V for electrical safety.\u003c\/li\u003e\n  \u003cli\u003eIP67 waterproofing for reliable performance in wet, dusty, or marine conditions.\u003c\/li\u003e\n  \u003cli\u003eRobust construction and quality control aimed at long-term operation outdoors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCan I use the isolator for emergencies or reverse charging?\u003c\/h3\u003e\n\u003cp\u003eYes — the device supports both automatic operation and a manual override for emergency reverse charging. If the main battery is flat, you can manually link the batteries to allow the auxiliary battery to provide starting power or to reverse-charge the main battery.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eManual mode connects batteries when you need immediate starting assistance.\u003c\/li\u003e\n  \u003cli\u003eAutomatic mode maintains normal protective operation while charging during runs.\u003c\/li\u003e\n  \u003cli\u003eUseful for roadside recovery, stored vehicles, or when running accessories off an auxiliary battery.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich vehicles and battery types is this isolator appropriate for?\u003c\/h3\u003e\n\u003cp\u003eThe UCkasayfy 12V 140A isolator is compact and versatile, suitable for ATVs, UTVs, boats, RVs, trucks, trailers, campers, and other 12V lead-acid battery systems. It is specifically not compatible with lithium battery chemistries, so avoid using it with LiFePO4 or other lithium-based batteries.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eFits a variety of 12V lead-acid systems: flooded, AGM, and gel batteries.\u003c\/li\u003e\n  \u003cli\u003eIdeal for vehicles that need dual-battery setups without complex wiring.\u003c\/li\u003e\n  \u003cli\u003eNot for lithium batteries—do not install with Li-ion or LiFePO4 packs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho this is for: The UCkasayfy Dual Battery Isolator 12V 140A is best for vehicle owners who want a low-maintenance way to add an auxiliary battery for accessories, camping, or longer trips while keeping the starter battery isolated and protected. Choose this unit if you run fridges, lighting, winches, or other accessories off a secondary 12V lead-acid battery and need an automatic, weatherproof solution with an easy manual override for emergency starts. Avoid this model if your setup uses lithium batteries or requires a battery combiner explicitly designed for lithium charging profiles.\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 compatible with lithium batteries?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The UCkasayfy 12V 140A isolator is not compatible with lithium battery chemistries.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What voltages trigger the relay to connect and disconnect?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The relay cuts in at 13.3 V and cuts out at 12.8 V; it also disconnects below 11 V or above 17 V for protection.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"UCkasayfy","offers":[{"title":"Default Title","offer_id":48085347106974,"sku":"B0DLWBMGZJ","price":37.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/uckasayfy-front-panel.jpg?v=1785869748","url":"https:\/\/northtrailauto.ca\/products\/uckasayfy-dual-battery-isolator-12v-140a-vsr-with-voltage-display-and-ip67-waterproof","provider":"North Trail Auto","version":"1.0","type":"link"}