SKU: 75134769017

Victron 100A Battery Isolator Argo FET 100-3 | 3 Batteries

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Description

Victron 100A Battery Isolator Argo FET 100-3 | 3 BatteriesReliable multi battery charging without cross discharge The Victron Argo FET 100 3 100A Battery Isolator is a high efficiency battery isolator designed to charge 3 battery banks from a single alternator or a single output battery chargerwhile keeping each battery electrically separated. That separation is the key benefit: powering lights, a fridge or a winch from your auxiliary battery bank is far less likely to flatten the starter battery, helping

Reliable multi-battery charging without cross-discharge

The Victron Argo FET 100-3 100A Battery Isolator is a high-efficiency battery isolator designed to charge 3 battery banks from a single alternator or a single-output battery charger—while keeping each battery electrically separated. That separation is the key benefit: powering lights, a fridge or a winch from your auxiliary battery bank is far less likely to flatten the starter battery, helping improve vehicle reliability for touring, marine and off-grid power setups across Australia.

Unlike traditional diode splitters, this unit uses FET isolator technology to minimise voltage drop. In practical terms, more of your alternator’s output reaches your batteries, which can support better charge acceptance and shorter run times in real-world systems. It also avoids the common need to raise alternator voltage to compensate for isolator losses—particularly helpful when you’re integrating modern battery chemistries or managing longer cable runs.

Designed for touring, marine and off-grid electrical systems

This isolator suits common 12V and 24V automotive and marine power systems with 12/24V auto-ranging operation. It’s a strong fit for caravans, 4WD dual-battery installs, work utes, boats, and remote power cabinets where you want straightforward alternator charging distribution without tying battery banks together. Each output is independently isolated, so different battery banks can be charged simultaneously while remaining protected from mutual discharge paths.

Helps alternators start charging when split charging is installed

Some alternators require a sense/return voltage on the B+ output to begin charging. When an isolator is installed, that return path can be reduced—occasionally leading to delayed or no alternator start-up. This unit includes an alternator energise input to assist with alternator excitation in these scenarios, supporting stable charging behaviour when the engine run/stop circuit is engaged. This is particularly relevant in modern vehicles and certain marine alternator configurations.

Installation notes that protect performance

As with any high-current battery isolator, overall charging performance depends heavily on cable sizing, connection quality and cable length. Keeping cable runs short and selecting an appropriate conductor cross-section helps reduce voltage drop in the wiring so the benefits of low-loss FET switching are preserved. For best results, follow Victron wiring guidance and use properly crimped lugs, secure fasteners and sound corrosion protection—especially in coastal and marine environments.

Key features

  • Simultaneous charging of 3 battery banks from one alternator or charger
  • FET technology for very low voltage drop compared with diode splitters
  • Battery bank isolation helps reduce the risk of draining the starter battery from auxiliary loads
  • 12V/24V system compatibility with auto-ranging operation
  • High-current terminals for secure connections in demanding automotive and marine installs
  • Status indication to support quick checks during commissioning and fault-finding

Very low voltage drop (typically around 0.02V at low current, averaging about 0.1V at higher currents) helps maximise charging voltage at the batteries compared with diode isolators.

Alternator energise input can assist alternator start-up in systems where the alternator needs B+ voltage present to begin charging.

Build a more dependable dual-battery or multi-battery system

If you’re planning a 3-battery split-charging setup and want a proven way to distribute alternator charging while keeping battery banks isolated, the Victron Argo FET 100-3 100A Battery Isolator is a practical, low-loss solution. Add it to your setup to support cleaner power management and more confident starts on the road or at sea.

Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 75134769017

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FeralCatLady
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★★★★★ 5
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Color: A White, Color: A White
I'm not sure what I saw in Mt mind's eye when I ordered this, but this was not it. HOWEVER, this little deer can't be more than 3.5 inches long and with it's over exaggerated antlers it actually makes the CUTEST little jewelry tree. As you can see I put studs thru the holes where the pairs are in symmetrical spots, but as my daughter said "it's kind of awkward that they aren't closer" But the studs I'll keep in place will be my least used, so it shouldn't be an issue. This little tree is made of very lightweight plastic which snapped together easily, but a big part of me hopes to someday find one a bit larger, made of ceramic. As my daughter said "it's by far the most creative one I've ever seen"
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Reviewed in the United States on March 30, 2024
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Pam
Bozeman, US
★★★★★ 1
Not worth it
Color: A White
Cheap and flimsy, Fell over with my jewelry on it. Everything got tangled because eit wasn't spaced out. For anyone looking to buy it--dont. It may not be tall enough for your necklaces to dangle and not drag on the tray. However it is beautiful, would not buy again
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Reviewed in the United States on August 2, 2023
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Lili :)
Los Angeles, US
★★★★★ 5
Great for college!
Color: A White, Color: A White
I am not one to decorate my room, but this really helps put vibes in it. Unfortunately, you cannot put a lot on this, but it is still good to put your everyday jewelry on. I find that I can only put two necklaces on the antlers because anymore it would get tangled. Earrings can be a little tricky to put in depending on what type of backing it has rings and bracelets. I usually put at the bottom of the tray and I don’t have problems with that.
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Reviewed in the United States on April 4, 2024
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I absolutely love this Pink Marble Mouse Pad with 15W Wireless Charging. The design is beautiful, soft, and feminine without being too much, and it instantly makes my desk look more polished and organized. The large size is perfect because it gives me plenty of room for my keyboard, mouse, notebook, and other desk essentials while still keeping everything looking neat. The wireless charging feature is such a convenient bonus. I love being able to place my phone down and charge it while I work without having extra cords everywhere. The surface is smooth, my mouse glides easily, and the pad feels comfortable during long hours at my desk. Overall, this is a great mix of style and function. It is perfect for a home office, gaming setup, content creation space, or anyone who wants their desk to look cute and stay practical. Highly recommend!
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