SKU: 80140866035

Victron 120A Battery Isolator Argodiode 120-2AC | 2 Batteries

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Description

Victron 120A Battery Isolator Argodiode 120-2AC | 2 BatteriesVictron 120A Battery Isolator Argodiode 120 2AC: High Efficiency Schottky Diode Battery Isolator for Dual and Multi Bank Charging Reliable Simultaneous Charging Without Battery Interconnection The Victron 120A Battery Isolator Argodiode 120 2AC is a robust diode battery isolator engineered to enable simultaneous charging of 2 separate battery banks from a single alternator, without electrically connecting the batteries together. This ensures that

Victron 120A Battery Isolator Argodiode 120-2AC: High-Efficiency Schottky Diode Battery Isolator for Dual and Multi-Bank Charging

Reliable Simultaneous Charging Without Battery Interconnection

The Victron 120A Battery Isolator Argodiode 120-2AC is a robust diode battery isolator engineered to enable simultaneous charging of 2 separate battery banks from a single alternator, without electrically connecting the batteries together. This ensures that discharging an accessory or auxiliary battery—such as a house bank in a caravan, boat, or 4WD—will not drain the starter battery, preserving engine start capability and reducing the risk of being stranded. Unlike generic split-charge relays or basic isolators, this Victron unit uses advanced Schottky diode technology to minimise voltage drop, delivering more efficient charging and longer battery life.

Designed for 12V and 24V DC systems, this isolator is ideal for marine, automotive, and off-grid applications where reliable multi-battery management is critical. Its low forward voltage drop—approximately 0.3 V at low current and 0.45 V at rated output—reduces energy loss and heat generation, ensuring more of the alternator’s output reaches your batteries. This is a significant advantage over conventional silicon diode isolators, which can drop 0.7 V or more, leading to chronic undercharging and premature battery failure.

Advanced Schottky Diode Technology for Superior Performance

At the core of the Victron 120A Battery Isolator Argodiode 120-2AC are high-efficiency Schottky diodes, which provide a lower forward voltage drop compared to standard PN-junction diodes. This means less power is wasted as heat, and the alternator can operate closer to its intended voltage setpoint. The integrated voltage compensation diode allows you to fine-tune the alternator’s output voltage to offset the small remaining drop, ensuring batteries reach a full state of charge. This feature is especially valuable in systems where battery longevity and performance are paramount, such as in deep-cycle AGM or lithium battery setups.

Additionally, the Victron 120A Battery Isolator Argodiode 120-2AC includes a current-limited alternator energize input which is essential for modern alternators that require a DC voltage on the B+ terminal to initiate charging. Without this input, a diode isolator would block the return voltage, preventing the alternator from starting. The energize circuit provides a safe, controlled current to the B+ terminal when the engine run/stop switch is closed, ensuring reliable alternator activation.

Built for Demanding Environments

Victron’s Argo Diode isolators are constructed with a durable anodised aluminium heat sink that efficiently dissipates heat, allowing continuous operation at high currents without thermal throttling. The compact footprint—60 x 120 x 115 mm—and light weight of 0.8 kg make installation straightforward in tight engine bays or electrical compartments. Heavy-duty M8 Studs stud terminals ensure secure, low-resistance connections for high-current cables, while the 6.3 mm Faston connectors for compensation and energize simplify wiring.

All models are rated for mounting on non-flammable surfaces and are tested to withstand the vibration, temperature extremes, and salt-laden air common in marine and automotive environments. This rugged design reduces the risk of premature failure and electrical faults that can occur with lesser-quality isolators.

Key Features

  • Simultaneous charging of 2 battery banks from one alternator without interconnection
  • Low voltage drop Schottky diodes: ~0.3 V at low current, ~0.45 V at rated output
  • Integrated voltage compensation diode to optimise alternator output
  • Current-limited alternator energize input for modern alternators
  • Heavy-duty M8 Studs stud terminals for secure high-current connections
  • Compact, lightweight aluminium heat sink for efficient cooling
  • Suitable for 12V and 24V DC systems
  • Robust construction for marine, automotive, and off-grid use

Applications

The Victron 120A Battery Isolator Argodiode 120-2AC is an excellent choice for a wide range of dual-battery and multi-battery systems, including:

  • Marine vessels: separate starter and house battery banks
  • Caravans and motorhomes: charging auxiliary batteries while driving
  • 4WD and off-road vehicles: powering winches, fridges, and camping accessories
  • Commercial vehicles: maintaining separate battery systems for equipment
  • Off-grid solar systems: combining multiple charge sources without back-feed

Installation Considerations

When installing a diode battery isolator, it is important to account for the slight voltage drop across the diodes. The integrated compensation diode can be used to adjust the alternator’s voltage regulator, but in some systems, additional wiring modifications may be required. For optimal battery health and charging performance, consult the Victron ‘Energy Unlimited’ book or seek advice from a qualified auto electrician or marine installer. Proper cable sizing and termination are critical to minimise additional voltage losses and ensure safe, reliable operation.

Upgrade your battery management system with the Victron 120A Battery Isolator Argodiode 120-2AC and enjoy the peace of mind that comes with Victron’s proven reliability and engineering excellence. Whether you’re outfitting a bluewater cruiser, a remote-area tourer, or a commercial fleet vehicle, this isolator delivers the performance and durability you need to keep all your batteries charged and ready.

Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 80140866035

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4.0 ★★★★★
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NLB
San Leandro, US
★★★★★ 5
Interesting
Format: Kindle
So I will say I enjoyed the story, for sure had its moments where it dragged but it was a great story. I really liked that omegas picked their alphas/make the pack. Normally the Alphas make it and the omega fits in with them which is great but I enjoyed this new version where all the power basically went to the omega. It was a nice change of pace. I can admit some of the weird bedroom stuff with her being pregnant was odd, it’s really not hard to do stuff when pregnant (I know I’ve had two and it’s normal and even encouraged at the end especially if you want the baby out). But I like the story as a whole and will read the second, I do hope the next one isn’t dragged bc it stopped being action or tense after she met her alphas and I don’t think it was brought up or properly done when they tried to do it. More sweet after she left.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 11, 2024
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Altairjones
Waukegan, US
★★★★★ 3
I’m a little disappointed.
Format: Kindle
I usually like Jillian West’s books but this one was missing a lot for me. The pregnancy didn’t come across as real. She’s on her feet for 12 hour days but is perfectly healthy at 8 months pregnant? Yet the week she moves in all of a sudden she’s not? She is planning on actually running during one of the plot buildups. But at 8 months pregnant that’s incredibly hard to do. The lack of breathing ability and lung space, the change in body center, mass, and gravity. All of it prohibits running, unless you’re an athlete this didn’t come off as at all realistic. I didn’t feel any connection with the alphas. There wasn’t any emotional connection. It could be because of the tense it was written in. But I didn’t get any deep feelings out of this. It came across as checking off boxes. Even the spicy scenes weren’t really believable for me. I wanted to see them fall for her, and it just kind of all fizzled. Even Bishop. One thing I did really like was the ending. I did not see it coming and I’m interested in reading book two because of it. But on the whole this book was mostly disappointing for me.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2024
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Melissa Williams
Lake Worth, US
★★★★★ 4
4.25 stars
Format: Kindle
Vale is an 8 month pregnant omega working as a waitress at a strip club and a cam girl. She starts to get very creepy vibes from a regular at the club, and her baby daddy ghosted her. She has had an online relationship with a man named Bishop through her cam girl status. One night, bishop was paying to watch her sleep and ansthe creepy regular Andrew break in and watch her sleep he tells vale to come to him at his business now. She flees and finds herself at a large security company with some.hot of alphas who are there to help her. This imegaverse is a little different than I have read, but I am thoroughly enjoying it. Vale is not a traditional omega she was raised by a single beta mom, and the alphas are not normal alphas they have never really loved pack life. But they are ruthless mercenaries. They need her, and she needs them. I love the aspect of the stalker and now the plot twists at the end, so so good. Sometimes, it seemed a little slow and stale mated, but since this a duet, I think It was just her starting to have Vale get to know her alpha suitors. Cliffhanger for sure with this one.
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Reviewed in the United States on September 9, 2024
A
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Austin & Cambria
Whiting, US
★★★★★ 5
That ending 😫
Format: Kindle
I fell into a false sense of security and really thought this was gearing towards a happy ending. Then I realized there’s no work they don’t punish Andrew. I really liked Vale’s character. I don’t normally read books with pregnancy but going into this knowing she was pregnant made it more enjoyable for me. I loved Bishops devotion to her and her happiness. I also loved that Holt and Mercy couldn’t fight their attraction to her. I love scent matches so very much. I’m so curious to see how this duet will end up. And I need to pay more attention and notice that a book I’m starting is a duet to begin with lol
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Reviewed in the United States on February 21, 2025
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Sarah A
Lake Worth, US
★★★★★ 5
oh wow
Format: Kindle
I just knew there was something about Cooper! I’m wondering if he’s about to be included but damn I’m glad he’s at least not a rapist and creepy guy, he just got called on assignment and had to go! This should be interesting! She’s gonna run and then what’s his face is gonna grab her. I’m worried! Wow that was a great book and cliffhanger! Loving this!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 27, 2025

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