SKU: 30821840512

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
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SKU: 30821840512

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tbd
Lowell, US
★★★★★ 4
4plus
Format: Kindle
This is an enjoyable read with a good mixture of emotion, plot, sensuality, and sex. I think you’ll enjoy it.
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Reviewed in the United States on May 19, 2025
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Suzette
Boise, US
★★★★★ 5
Worth the wait!
Format: Kindle
I've been anticipating this book for so long and even reread the last one to get my mind back in that world. I was not disappointed. Valerie and Abby were perfectly paired in every way. Their chemistry was so apparent from that first time kneeling in the park. And their emotions felt so real, like you've felt what they're experiencing before. And Francesca, the antagonistic, really infuriates you to the point of wishing things that probably shouldn't be wished on to another person. But that's how you know a character is well written, when they can illicit such emotional responses from the reader. And my god, did this book have emotions from passion to playfulness and even hurt, but in the end, these two women stand strong and stronger together for what they go through. And I can't forget to mention Hazel who was just so stinkin' cute! The only critique I have was Abby's friend Erin, who, at the beginning didn't seem the most supportive and kind of judgy despite her own odd situation with her bf Dan. I actually thought Abby and Erin were going to have their own conflict from the vibes at the beginning. But then Erin was quick to defend Valerie without knowing anything about her on a personal level because Abby signed an NDA and Erin didn't really know anything about their intimate realrionship or what Abby went through at the house since she didn't really disclose much. I guess she could have done so off page and, maybe I'm misremembering, but it didn't seem obvious that Erin would've known Valerie was a good person so I'm just wondering why she would want to push them together. We know she was being supportive technically because WE know Valerie's intentions, but SHE doesn't know, and ABBY doesn't know, so from Abby's perspective, it just seems like more of Erin supporting other people over her. If it were my friend coming to me saying all the things Abby thought she heard and understood from her perspective during the 3/4 conflict, there's no way I'd be encouraging her to give Valerie another chance or be on Valerie's side even a little. It was such a minor issue even though, yes, I know I wrote a paragraph, but still, an almost insignificant annoyance that didn't sway my overall opinion. Just an afterthought that made me think about how Abby deserves all the support she should've had with her own family. Again, so worth the wait because I love this author and the characters she comes up with and the worlds she builds around these people. Health is so important and comes first so I would wait a decade for the next one. I'm so pumped to see who's up next in this friend group because I know there's another beautiful relationship waiting to unfold. Bring it on, Anna!
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Reviewed in the United States on May 17, 2025
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Michelle
Boise, US
★★★★★ 5
At Her Service
Format: Kindle
Another brilliant book by Anna Stone. I truly enjoy her books. The give and take in her characters is a delight to read. The secondary characters are well developed and added to the storyline. The angst was done well. The resolution was beautifully done. I always look forward to a new book by Anna Stone, and it usually goes to the top of my tbr. I will continue to follow her.
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Reviewed in the United States on May 20, 2025
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Verified Purchase
Robin Kenna
Bozeman, US
★★★★★ 5
How do you control another woman? Just like this!
Format: Kindle
Anna Stone has written a thrilling very hot and sexy love story. I was grabbed by the end of the first page and did not put it down until the last period! There are so many things to build the anxiety; childhood trauma, a total need to be dominated, job stress, and that went to both MC’s, and then there was a stalker added for good measure. As often as my heart swooned, and my imagination took over … honestly this story is good!
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Reviewed in the United States on June 1, 2025
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Nkl
Omaha, US
★★★★★ 3
Instant love
Format: Kindle
This is typical Anna Stone writing which means it is very enjoyable but will follow very similarly to her other books. Valerie and Abby have an instant connection so no build up really. The drama with the ex was introduced but not played up enough. Most of the drama with Valerie seemed to be handled like background info and fixed off screen. Same with Abby and her family issues like it’s mentioned but miraculously better at the end. I had high hopes for this but I’m really not into the instant love trope. I do recommend if you are a fan of the author.
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Reviewed in the United States on May 10, 2025

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