{"product_id":"victron-energy-argofet-200-2ac-battery-isolator-for-2-batteries-200a-low-voltage-drop-auto-12-24v","title":"Victron Energy Argofet 200-2AC Battery Isolator for 2 Batteries, 200A — Low Voltage Drop, Auto 12\/24V","description":"\u003cp\u003e\u003cstrong\u003eThe Victron Energy Argofet 200-2AC is a two-battery FET isolator that lets one alternator charge two separate batteries safely and efficiently without tying them together.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eThe Argofet 200-2AC replaces traditional diode isolators by using MOSFET (FET) technology to achieve extremely low voltage drop and automatic 12\/24V compatibility. Designed for boats, RVs and commercial vehicles, it keeps the starter battery protected while allowing an accessory or house battery to receive charge simultaneously. Its low voltage loss preserves alternator output and helps batteries reach their full charge more quickly compared with diode-based units.\u003c\/p\u003e\n\n\u003ch3\u003eHow does the Argofet 200-2AC prevent the starter battery from discharging?\u003c\/h3\u003e\n\n\u003cp\u003eThe isolator electrically separates the starter and accessory batteries so loads on one battery won’t pull current from the other. It uses FET switches that conduct when the alternator puts out charging voltage, but block current flow between batteries when the alternator is off.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eIndependent battery paths prevent accessory drains from affecting starter power.\u003c\/li\u003e\n  \u003cli\u003eAutomatic switching engages only during alternator charging.\u003c\/li\u003e\n  \u003cli\u003eSolid-state FETs provide fast, reliable isolation without mechanical relays.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWill this work in my 12V or 24V electrical system?\u003c\/h3\u003e\n\n\u003cp\u003eThe Argofet 200-2AC is auto-ranging and will operate correctly on both 12-Volt and 24-Volt systems without manual changes. This makes it suitable for mixed-fleet installations and simplifies inventory for workshops or installers who service different vehicles.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eAutomatic detection of 12V or 24V systems—no jumper settings required.\u003c\/li\u003e\n  \u003cli\u003eSized for systems where a single alternator must charge two batteries up to 200A shared load.\u003c\/li\u003e\n  \u003cli\u003eCompatible with standard automotive and marine charging setups when correctly wired and fused.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow efficient is the Argofet compared with diode isolators?\u003c\/h3\u003e\n\n\u003cp\u003eUnlike diode isolators that have significant forward voltage drop, the Argofet FET design delivers near-zero voltage loss. This higher efficiency leads to more effective charging, especially important for higher-current alternators and modern lead-acid or lithium battery systems.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eVoltage drop typically less than 0.02 V at low currents and about 0.1 V at higher currents.\u003c\/li\u003e\n  \u003cli\u003eLess wasted alternator output means faster, fuller battery charging.\u003c\/li\u003e\n  \u003cli\u003eReduces the need to increase alternator voltage to compensate for losses.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat installation and wiring considerations should I be aware of?\u003c\/h3\u003e\n\n\u003cp\u003eProper cable sizing and short run lengths ensure the isolator performs as intended and minimizes heat and voltage drop on the conductors. The Argofet itself introduces minimal loss, but attention to cables, fusing and secure connections is key to safe, reliable operation.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eUse appropriately sized battery cable and keep runs short where possible.\u003c\/li\u003e\n  \u003cli\u003eInstall fuses or circuit breakers on each battery feed per local electrical codes and alternator specs.\u003c\/li\u003e\n  \u003cli\u003eMount in a ventilated, dry location with easy access for inspection and maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? The Victron Energy Argofet 200-2AC is ideal for boat owners, RV enthusiasts, commercial vehicle operators and professional installers who need a compact, reliable way to charge two batteries from one alternator without linking them together. It suits systems that demand high charging efficiency, automatic 12\/24V compatibility and protection of the starter battery from accessory loads. If you want near-zero voltage loss, solid-state reliability, and a straightforward installation for dual-battery charging, this unit is a practical choice.\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: Can the Argofet 200-2AC charge two batteries at once without draining the starter battery?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes. It isolates the batteries so the alternator charges both but accessory battery discharge does not pull from the starter battery.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Do I need a different model for 24V systems?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. The Argofet 200-2AC is auto-ranging and works on both 12V and 24V systems without adjustments.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"Victron Energy","offers":[{"title":"Default Title","offer_id":48080238182558,"sku":"B00NT9MTMQ","price":180.26,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/victron-argofet-front-view.jpg?v=1785780006","url":"https:\/\/northtrailauto.ca\/products\/victron-energy-argofet-200-2ac-battery-isolator-for-2-batteries-200a-low-voltage-drop-auto-12-24v","provider":"North Trail Auto","version":"1.0","type":"link"}