{"product_id":"argofet-100-3-battery-isolator","title":"Victron Argofet 100-3 FET Battery Isolator 100A | ARG100301020","description":"\u003cp\u003eThe Victron Argofet 100-3 is a FET-based battery isolator that charges three separate battery banks from a single alternator or charger, with no voltage drop penalty. It suits marine, vehicle and off-grid installations where independent battery banks need to stay isolated from each other while sharing one charge source.\u003c\/p\u003e\u003ch2\u003eKey features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree outputs\u003c\/strong\u003e, charges three independent battery banks from a single input, with full isolation between banks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFET technology\u003c\/strong\u003e, eliminates the 0.6V to 0.7V voltage drop found in diode-based isolators, so each bank gets the full charge voltage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent rating\u003c\/strong\u003e, 100A continuous across the combined output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlternator protection\u003c\/strong\u003e, built-in circuit prevents voltage spikes if the unit is disconnected under load\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHousing\u003c\/strong\u003e, compact aluminium casing suited to engine bays and confined spaces\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem voltage\u003c\/strong\u003e, compatible with 12V and 24V systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eProduct overview\u003c\/h2\u003e\u003cp\u003eDiode isolators drop around 0.6V to 0.7V on every charge path, which means connected banks never quite reach full charge voltage. Over time this shortens battery life and reduces usable capacity. The Argofet 100-3 uses MOSFET technology instead, so the alternator or charger's full output voltage reaches each bank.\u003c\/p\u003e\u003cp\u003eThree output banks from one input suits a typical setup of a starter battery, a domestic bank, and a third bank for a bow thruster, generator start or additional load. Each output stays isolated, so a deeply discharged bank cannot pull down voltage on the others. The alternator protection circuit matters here: disconnecting a battery from a running alternator can send a damaging voltage spike back through the system, and this circuit suppresses that risk.\u003c\/p\u003e\u003cp\u003eThe aluminium housing dissipates heat without needing a cooling fan under normal conditions, and it is compact enough for tight engine compartments.\u003c\/p\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cp\u003eFitted on marine vessels with separate starter, domestic and thruster banks run from one alternator; motorhomes and campervans isolating the starter battery from leisure banks; off-grid vehicles or plant equipment with multiple banks serving different loads; and any setup where one charger must feed three banks without cross-discharge.\u003c\/p\u003e\u003ch2\u003eWhat's in the box\u003c\/h2\u003e\u003cul\u003e\u003cli\u003e1 x Victron Argofet 100-3 FET battery isolator\u003c\/li\u003e\u003c\/ul\u003e\u003ch2\u003eInstallation notes\u003c\/h2\u003e\u003cp\u003eFitting should be carried out by a qualified auto-electrician or marine electrician working with high-current DC systems. Torque connections correctly and fuse each output cable close to the battery terminals. Mount on a surface that allows heat to dissipate, and confirm 12V or 24V system compatibility before wiring in. Do not disconnect battery banks while the alternator is running, even with the protection circuit fitted.\u003c\/p\u003e","brand":"Victron Energy","offers":[{"title":"Default Title","offer_id":52095601082656,"sku":"ARG100301020","price":98.69,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1010\/8148\/1504\/files\/ledandsolar-arg100301020-1.webp?v=1785754793","url":"https:\/\/www.ledandsolar.co.uk\/products\/argofet-100-3-battery-isolator","provider":"LED \u0026 Solar","version":"1.0","type":"link"}