{"product_id":"victron-argofet-100-3-fet-battery-isolator-3-banks","title":"Victron Argofet 100-3 Three batteries 100A Retail - ARG100301020R","description":"\u003ch1 style=\"color: #f87c24;\"\u003eVictron Argofet 100-3 Battery Isolator, Three Batteries, 100A\u003c\/h1\u003e\n\n\u003cp\u003eThe Victron Argofet 100-3 is a FET-based battery isolator designed to charge up to three separate battery banks simultaneously from a single alternator or charger, with no voltage drop penalty. It is suited to marine, vehicle and off-grid applications where independent battery banks must be kept isolated from one another while sharing a single charging source.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #f87c24;\"\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eCharges three independent battery banks from one alternator or DC charger without cross-discharge between banks.\u003c\/li\u003e\n  \u003cli\u003eFET (Field Effect Transistor) technology eliminates the 0.6V to 0.7V voltage drop associated with traditional diode-based isolators, preserving full charge voltage to each battery bank.\u003c\/li\u003e\n  \u003cli\u003e100A continuous current rating across all three outputs.\u003c\/li\u003e\n  \u003cli\u003eAlternator excitation wire connection included, ensuring the alternator field circuit is not disrupted by the isolator.\u003c\/li\u003e\n  \u003cli\u003eCompact, robust aluminium housing suitable for installation in engine bays and confined spaces.\u003c\/li\u003e\n  \u003cli\u003eCompatible with all battery chemistries including lead-acid, AGM, gel and lithium (LiFePO4).\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #f87c24;\"\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eConventional diode isolators introduce a voltage drop of around 0.6V to 0.7V on every output. Over a charging cycle, this means batteries never receive the full charge voltage set by the alternator or charger regulator, leading to chronic undercharging. The Argofet 100-3 uses MOSFET technology to reduce this drop to near zero, so each battery bank receives the correct charge voltage without any modification to the charging source.\u003c\/p\u003e\n\n\u003cp\u003eThe unit supports three output banks at a combined maximum of 100A. Each output is fully isolated from the others, meaning a fault or deep discharge on one bank cannot draw current from another. This is particularly important in dual-battery vehicle setups or multi-bank marine installations where a starter battery must remain protected from auxiliary loads.\u003c\/p\u003e\n\n\u003cp\u003eThe Argofet 100-3 includes a dedicated alternator excitation connection. Without this, the FET circuitry can prevent the alternator from seeing a load at startup, causing it not to excite. Victron's design addresses this directly, making the unit straightforward to integrate with standard vehicle and marine alternator systems.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #f87c24;\"\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSKU: ARG100301020R\u003c\/li\u003e\n  \u003cli\u003eNumber of battery outputs: 3\u003c\/li\u003e\n  \u003cli\u003eMaximum continuous current: 100A\u003c\/li\u003e\n  \u003cli\u003eTechnology: MOSFET FET isolator\u003c\/li\u003e\n  \u003cli\u003eWeight: 1.462 kg\u003c\/li\u003e\n  \u003cli\u003eGTIN: 8719076019060\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #f87c24;\"\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMarine vessels with separate starter, domestic and bow thruster battery banks.\u003c\/li\u003e\n  \u003cli\u003eCampervans and motorhomes with a starter battery plus one or more leisure battery banks.\u003c\/li\u003e\n  \u003cli\u003eCommercial vehicles requiring isolated auxiliary battery systems.\u003c\/li\u003e\n  \u003cli\u003eOff-grid cabins or vehicles where multiple battery banks are charged from a single DC source.\u003c\/li\u003e\n  \u003cli\u003eRetrofit replacement for diode-type isolators where voltage drop is causing undercharging issues.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #f87c24;\"\u003eWhat Is Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eVictron Argofet 100-3 FET battery isolator unit\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #f87c24;\"\u003eInstallation Notes\u003c\/h3\u003e\n\u003cp\u003eInstallation should be carried out by a qualified auto-electrician or marine electrician familiar with multi-battery DC systems. Ensure all battery banks are disconnected before wiring. The alternator excitation wire must be connected correctly to avoid alternator startup issues. Fuse each output circuit appropriately for the connected battery bank and cable rating. For lithium battery installations, verify that the battery management system (BMS) is compatible with shared alternator charging before fitting.\u003c\/p\u003e","brand":"Victron Energy","offers":[{"title":"Default Title","offer_id":59863664296270,"sku":"ARG100301020R","price":84.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0796\/3698\/8238\/files\/VoltaconSolar_-_ARG100301020R_-_Argofet_100-3_Three_batteries_100A_Retail.webp?v=1781183091","url":"https:\/\/voltaconsolar.com\/products\/victron-argofet-100-3-fet-battery-isolator-3-banks","provider":"VoltaconSolar","version":"1.0","type":"link"}