{"product_id":"keyline-chargers-300a-dual-battery-isolator-kit-12v-vsr-lithium-compatible","title":"KeyLine Chargers 300A Dual Battery Isolator Kit – 12V VSR, Lithium Compatible","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\u003cp\u003eMeet the KeyLine Chargers Heavy Duty 300A Dual Battery Isolator Kit, a rugged solution for demanding 12V systems. This Voltage Sensitive Relay (VSR) sits between your start battery and auxiliary bank, engaging at a controlled threshold to balance power delivery while keeping your engine-ready battery primed. It’s designed to work with all battery types, including lithium and LiFePO4, making it a versatile upgrade for off‑grid adventures, work sites, and long days on the road.\u003c\/p\u003e\n\u003ch3\u003eKey specs at a glance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eContinuous current up to 300A with a 1000A peak for short bursts\u003c\/li\u003e\n  \u003cli\u003eVoltage Sensitive Relay behavior: cuts in at 13.3V, cuts out at 12.8V\u003c\/li\u003e\n  \u003cli\u003eIP65-rated protection for dusty, wet, and rugged environments\u003c\/li\u003e\n  \u003cli\u003eUltra-compact footprint designed to fit under the hood or in tight spaces\u003c\/li\u003e\n  \u003cli\u003eProfessional-grade hardware backed by a 3-year warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat’s in the kit\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1x Smart Battery Isolator with mounting screws\u003c\/li\u003e\n  \u003cli\u003e20 ft (6 m) of 1 AWG red cable\u003c\/li\u003e\n  \u003cli\u003e2 ft (61 cm) 1 AWG black ground cable\u003c\/li\u003e\n  \u003cli\u003e2x positive and 1x negative marine battery terminals\u003c\/li\u003e\n  \u003cli\u003e3x 1 AWG copper crimp lugs\u003c\/li\u003e\n  \u003cli\u003e2x red and 1x black heat shrink tubing\u003c\/li\u003e\n  \u003cli\u003e1x insulated ring terminal\u003c\/li\u003e\n  \u003cli\u003e6x 8” zip ties\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eInstallation and use\u003c\/h3\u003e\n\u003cp\u003eThe kit is built to simplify upgrading a dual battery setup. Its compact form makes it easy to mount under the hood or near your batteries, while the included components reduce shopping time. The device is designed for straightforward wiring and reliable performance in variable conditions.\u003c\/p\u003e\n\u003ch3\u003eCompatibility and practical use\u003c\/h3\u003e\n\u003cp\u003eBeyond standard lead-acid, this isolator supports lithium and LiFePO4 chemistries, enabling flexible power management for accessories, inverters, and auxiliary loads. Users may experience more consistent alternator charging behavior and better utilization of stored energy, depending on their configuration.\u003c\/p\u003e\n\u003ch3\u003eWarranty and support\u003c\/h3\u003e\n\u003cp\u003eKeyLine Chargers backs the 300A Dual Battery Isolator with a 3-year warranty and a customer‑focused returns policy. For questions or assistance with installation, support is available to help you get the most from your setup.\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 all 12V battery types, including LiFePO4?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It supports 12V systems and works with all battery types, including lithium and LiFePO4.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What comes in the kit and is installation straightforward?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: The kit includes the isolator, cables, terminals, heat shrink, and ties; designed for tool-friendly, straightforward setup.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"KeyLine Chargers","offers":[{"title":"Default Title","offer_id":42464493076565,"sku":"B08TM748F8","price":232.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0632\/3270\/4597\/files\/keyline-chargers-300a-dual-battery-isolator-front-view.jpg?v=1777982472","url":"https:\/\/plentytorque.co.uk\/products\/keyline-chargers-300a-dual-battery-isolator-kit-12v-vsr-lithium-compatible","provider":"PlentyTorque","version":"1.0","type":"link"}