{"product_id":"powo-carlife-dual-battery-isolator-12v-140a-waterproof-vsr-with-digital-voltmeter-auto-manual-ip68","title":"POWO Carlife Dual Battery Isolator 12V 140A Waterproof VSR with Digital Voltmeter — Auto\/Manual, IP68","description":"\u003cp\u003e\u003cstrong\u003ePOWO Carlife Smart Dual Battery Isolator is a 12V, 140A waterproof voltage-sensitive relay that lets your engine charge two batteries safely and switches automatically or manually when needed.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThis compact battery isolator combines an intelligent VSR, digital voltmeter, and rugged IP68 waterproof construction so you can manage a main and auxiliary battery on cars, RVs, ATVs, UTVs, boats, and other 12V systems. It prevents over-discharge and over-voltage to protect the starting battery while enabling simultaneous charging from a single alternator. Installation is straightforward and the unit is built for harsh environments, whether wet marine use or off-road conditions.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the isolator protect my main battery?\u003c\/h3\u003e\n\u003cp\u003eThe isolator continuously monitors battery voltage and disconnects the auxiliary circuit when the main battery voltage falls outside safe thresholds. That prevents your starter battery from being drained by accessories or house loads while the engine is off.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAutomatically disconnects below 11V and above 17V to safeguard against over-discharge or over-voltage.\u003c\/li\u003e\n  \u003cli\u003eVoltage-sensitive relay only connects batteries when the main battery is sufficiently charged.\u003c\/li\u003e\n  \u003cli\u003eManual override option for controlled linking when needed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill it charge both batteries while I’m driving?\u003c\/h3\u003e\n\u003cp\u003eYes — when the engine is running and the main battery reaches a charge threshold, the relay links the alternator to the auxiliary battery so both charge concurrently. This ensures house batteries regain charge without jeopardizing engine start capability.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSmart sensing enables simultaneous charging from one alternator.\u003c\/li\u003e\n  \u003cli\u003eDigital voltmeter lets you monitor voltages at a glance.\u003c\/li\u003e\n  \u003cli\u003eWorks automatically or can be switched manually for special situations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eIs this isolator durable enough for marine and off-road use?\u003c\/h3\u003e\n\u003cp\u003eThe POWO Carlife isolator is engineered to withstand demanding environments — its IP68 rating resists water ingress, making it suitable for boats, wet climates, and muddy trails. The compact design lets you mount it in tight engine bays or under seats without worry.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eIP68 waterproof housing for reliable performance in wet conditions.\u003c\/li\u003e\n  \u003cli\u003eRobust construction tolerates vibration and outdoor exposure.\u003c\/li\u003e\n  \u003cli\u003eSmall footprint fits most vehicle and vessel installations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhich batteries and vehicles are compatible with this unit?\u003c\/h3\u003e\n\u003cp\u003eThis 12V VSR is compatible with most lead-acid and similar 12V systems used in cars, RVs, ATVs, UTVs, caravans, and marine craft. Note that it is not compatible with ternary lithium batteries, so check your battery chemistry before installing.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eWorks with standard 12V automotive and marine battery systems.\u003c\/li\u003e\n  \u003cli\u003eIdeal for vehicles needing auxiliary house or accessory batteries.\u003c\/li\u003e\n  \u003cli\u003eNot suitable for ternary lithium battery chemistries.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: The POWO Carlife Smart Dual Battery Isolator suits owners who need reliable dual-battery charging and protection — weekend boaters, RV travelers, overlanders, and drivers who run accessories off a secondary battery. It's for anyone wanting automatic, worry-free battery management with a durable, marine-grade package and easy monitoring via an integrated digital voltmeter.\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: Does the isolator work automatically?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It senses voltage and automatically connects batteries when the main battery is charged, with a manual override available.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use this with lithium batteries?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. This unit is not compatible with ternary lithium batteries; use it with standard 12V lead-acid type systems.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"POWO Carlife","offers":[{"title":"Default Title","offer_id":48085621244062,"sku":"B0D147R21S","price":36.3,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/powo-carlife-front-view-unit.jpg?v=1785874919","url":"https:\/\/northtrailauto.ca\/products\/powo-carlife-dual-battery-isolator-12v-140a-waterproof-vsr-with-digital-voltmeter-auto-manual-ip68","provider":"North Trail Auto","version":"1.0","type":"link"}