SKU: 58582437391

Victron 140A Battery Isolator Argodiode 140-3AC | 3 Batteries

Sale price$132.03 Regular price$146.70
Save 10%

Pay in installments of $36.67 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 15 - Aug 20

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Victron 140A Battery Isolator Argodiode 140-3AC | 3 BatteriesVictron 140A Battery Isolator Argodiode 140 3AC: High Efficiency Schottky Diode Battery Isolator for Dual and Multi Bank Charging Reliable Simultaneous Charging Without Battery Interconnection The Victron 140A Battery Isolator Argodiode 140 3AC is a robust diode battery isolator engineered to enable simultaneous charging of 3 separate battery banks from a single alternator, without electrically connecting the batteries together. This ensures that

Victron 140A Battery Isolator Argodiode 140-3AC: High-Efficiency Schottky Diode Battery Isolator for Dual and Multi-Bank Charging

Reliable Simultaneous Charging Without Battery Interconnection

The Victron 140A Battery Isolator Argodiode 140-3AC is a robust diode battery isolator engineered to enable simultaneous charging of 3 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 140A Battery Isolator Argodiode 140-3AC 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 140A Battery Isolator Argodiode 140-3AC 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 150 mm (2.4 x 4.7 x 5.9 in)—and light weight of 1.1 kg (2.5 lbs) 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 3 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 140A Battery Isolator Argodiode 140-3AC 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 140A Battery Isolator Argodiode 140-3AC 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
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 58582437391

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.6 ★★★★★
Based on 13 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
M
Verified Purchase
Michael F. Nelson
Lexington, US
★★★★★ 4
A still timely writing for all pastors
Format: Paperback
Although first published 25 years ago, Peterson addresses a matter that is still timely, the need for all pastors to commit themselves to prayer, reading scripture and spiritual direction. These, Peterson asserts, are an essential foundation for all other aspects of ministry. Peterson's premise, that many pastors have abdicated their primary calling to these three practices, is still very relavent to the current state of pastoral ministry. Its content will be useful for new and veteran pastors alike.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 14, 2013
C
Verified Purchase
C S Berry
San Leandro, US
★★★★★ 5
Transformative if you are willing.
Format: Kindle
The triangle of pastoral ministry - Scripture - Prayer - Spiritual Direction is reckoned as sever lack in our pastoral lives. Peterson is a needed sage in the realm of modern evangelicalism.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 13, 2024
G
Verified Purchase
G. Sanders
Omaha, US
★★★★★ 5
A Personally Challengiing Read
Don’t expect Rosaria Butterfield to coddle sin. She acknowledges the Biblical truth that we are at war with it. It is evil. Lies are rampant with it. The Bible’s solution is to kill it, nailing it to the cross of Christ. If we don’t, it will do great and lasting harm. That is the background premise of this book. This book is for believers in Jesus Christ, especially those who identify as Evangelicals. Others may benefit by reading its pages, but I suspect that most of them will not be able to persevere through it because today’s culture is just not willing to sit through this much proclamation of Bible truth. They will react, not respond. Believers will be convicted, encouraged, and edified. Butterfield’s style is plain, but today’s culture requires her to address and to use terminology that may be challenging to many readers. It was for me. Add a level of abstraction for some challenging spiritual truths. Add the fact that she is an intellectual dealing with cultural and theological subjects. It is mostly college level reading, except for the story parts. Butterfield has credentials. A professor of English at Syracuse University, she was ten years in the Lesbian community with a mate. She was found by Christ, began to grow in Him, was discipled by faithful church women, met a wonderful man, was married to him--a Presbyterian pastor—became a mother, and began to minister to college students from a Christian perspective. She tells some of her story and the stories of others in the pages of the book. It is fascinating reading. The book is organized around the five lies that Butterfield has chosen to expose, with two to four chapters dealing with each. She acknowledges that there are others that could be exposed as well. The last one, about our culture's attitude toward modesty, was the most surprising to me. The book also has a Foreword by Kevin DeYoung, a Preface, and an Introduction. Don’t skip them. The Foreword is nothing short of a good sermon that should be shared in every church in America. In the Preface Butterfield spills the beans, revealing exactly where she stands on key topics and to whom she is addressing this volume. The Introduction is engaging and lengthy and pretty much summarizes the rest of the book. Along the way Butterfield deals with homosexuality, changing gender, male leadership in the home and in church, the bedrock importance of repentance, progressive sanctification, intersectionality, “gay Christianity” (Side A and Side B), feelings and truth, empathy and sympathy, submission of the wife, feminism, inerrancy, envy and biblical contentment, suffering, modesty and exhibitionism, and even worship. She quotes scripture, sometimes at length, and she gives copious Bible references. She also has footnotes, some of which are as interesting as the text. She names and uses or responds to contemporary authors on the topics at hand. She gives solid directions for those dealing with contemporary issues. She also has suggestions for dealing with family members beset by these matters including a question-and-answer section. Page 301. I recommend this book for all Christian leaders and for believers who want to understand contemporary challenges for the church from our modern culture.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2024
L
Verified Purchase
Lorie
Port Orchard, US
★★★★★ 5
Great information
Great read helps to communicate with others
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
J
Verified Purchase
Jeri Kratche
Dallas, US
★★★★★ 5
Relevant and serious issues for today’s Christian
This is a no joke book. She takes Christianity seriously and gives her own life story and growth to encourage the reader. Very convicting read.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 2, 2026

recommand products