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Description
Victron Cyrix-ct Intelligent Battery Combiner 12/24V-230A VSRVictron Cyrix ct 12 24V 230A: Intelligent Battery Combiner for Dual Battery Systems Advanced Voltage Sensing Relay for Reliable Parallel Charging The Victron Cyrix ct 12 24V 230A is a microprocessor controlled voltage sensitive relay (VSR) designed to intelligently manage dual battery systems in vehicles, boats, and off grid installations. Unlike conventional split charge relays that rely on simple voltage thresholds and fixed time delays, the Cyrix
Victron Cyrix-ct 12/24V-230A: Intelligent Battery Combiner for Dual-Battery Systems
Advanced Voltage Sensing Relay for Reliable Parallel Charging
The Victron Cyrix-ct 12/24V-230A is a microprocessor-controlled voltage sensitive relay (VSR) designed to intelligently manage dual-battery systems in vehicles, boats, and off-grid installations. Unlike conventional split charge relays that rely on simple voltage thresholds and fixed time delays, the Cyrix-ct uses intelligent trend detection to prevent unwanted switching caused by momentary voltage dips or spikes. This ensures your auxiliary battery bank charges reliably without premature disconnection, even when powering high-demand loads.
Engineered for 12V and 24V auto-ranging systems, this 230A continuous battery combiner is an ideal solution for caravan battery charging, marine dual-battery setups, 4x4 auxiliary power, and commercial vehicle electrical systems. Its bidirectional voltage sensing and dual power supply allow it to engage from either battery side, making it a versatile component in any DC charging architecture.
Intelligent Trend Detection: Smarter Than a Standard VSR
Traditional battery combiners often disconnect under short, high-amperage loads or fail to connect a deeply discharged battery bank because the voltage immediately drops below the disengage threshold. The Cyrix-ct overcomes these limitations by analysing the voltage trend over time. It only reverses a connection decision if the trend has genuinely reversed, with a time delay proportional to the voltage deviation. This prevents nuisance switching and ensures stable, continuous charging.
Key Features
- 230A continuous current rating with 500A cranking capacity for 5 seconds, supporting large battery banks and high inrush loads
- 12/24V auto-ranging automatically detects system voltage, simplifying installation across mixed fleets
- Bidirectional voltage sensing and dual power supply allow engagement from either battery, ideal for alternator or shore charger input
- Start Assist function enables manual parallel connection for 30 seconds via push button or switch, providing emergency cranking power from the auxiliary battery
- Over-temperature protection disengages the relay if contact temperature exceeds safe limits, automatically reconnecting after cooling
- LED status indicator provides clear visual feedback: engaged, disengaged, connecting, disconnecting, and alarm states
- Virtually zero voltage drop across the contacts, eliminating the need to increase alternator or charger output voltage as required with diode isolators
- Prioritises starter battery by only engaging when the starter battery reaches the connect voltage, ensuring reliable engine starting
- 16 mm (M8) long bolts allow secure connection of multiple heavy-duty cable lugs
- IP54 protection rated for dust and water spray, suitable for engine bays and exposed installations
- Low current consumption: less than 4 mA when open, 320 mA (12V) or 180 mA (24V) when closed
Built for Demanding Environments
The Cyrix-ct operates reliably in temperatures from -40 to +60 °C, making it suitable for Australian outback conditions, marine engine rooms, and cold-climate expeditions. Its compact dimensions (65 x 100 x 50 mm) and lightweight design (0.27 kg) allow flexible mounting in tight spaces. The included 1-metre control cable simplifies integration with existing wiring, while the robust M8 stud terminals accommodate heavy-gauge cables for minimal resistance.
Applications
- Caravans and motorhomes: automatically charge house batteries from the alternator while driving
- 4x4 and off-road vehicles: maintain auxiliary power for winches, fridges, and lighting
- Marine vessels: combine starter and service battery banks for efficient charging underway or at dock
- Commercial trucks and buses: manage multiple battery banks for lift gates, communications, and auxiliary equipment
- Off-grid solar systems: integrate with battery chargers to parallel charge multiple battery strings
Why Choose the Cyrix-ct Over Diode Isolators?
Diode isolators introduce a voltage drop of 0.6-0.7V, requiring higher alternator output and reducing charging efficiency. The Cyrix-ct uses a mechanical relay with negligible voltage loss, ensuring your batteries receive the full charging voltage. This leads to faster, more complete charging and longer battery life, especially critical for AGM and lithium batteries that require precise voltage regulation.
Upgrade Your Dual-Battery System Today
Experience reliable, intelligent battery management with the Victron Cyrix-ct 12/24V-230A. Whether you're building a new off-grid setup or upgrading an existing split charge system, this VSR delivers the precision and durability needed for demanding mobile and marine applications. Add it to your system now and ensure your auxiliary batteries are always ready when you need them.
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4.5 ★★★★★
Based on 640 reviews
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Product Reviews
★★★★★ 4
Need my own copy.
Format: Kindle
Looking forward to more of her work, and rereading this book. Some very evocative lines awake my granma memories much like the granmother memories herein.
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Reviewed in the United States on February 24, 2022
★★★★★ 5
Amazing Book...
Format: Paperback
It takes a lot nowadays for me to rate any Fiction book 5 stars. I read way more non-fiction, and usually only read highly recommended fiction, or some that's given to me.
There are plenty of other reviews here that tell you how it's not a "happy" book (why that matters i dont know), so i wont go on about that part. I dont base my reading choices on whether they have a happy fantasy story.
This story is very real. The writing is really good. I have several points that i use to rate a book: the story itself, the actual writing style, the 'entertainment' value, the emotions it brings out - laughter, sadness, etc., and if it's very memorable - either by being very different than anything i've ever read, or by something else about it being very different.
The only point out of all of those that i wouldnt give a 5 would be the writing style/prose - which i'd give a 4. It's very good, but not "amazing" to me like some authors are.
The author brought me into the characters - where i could feel what they were feeling, and i understood why they did the 'bad' things they did - totally. I felt the way they lived, the area, the poverty... As the story progressed, i stayed up one night for HOURS wanting to know what happened - until the sun rose actually.
As the finale was coming - which i had no idea would be the way it was - i was literally gripping the book with both hands and holding it up to my face. I realized this and laughed to myself since i hadnt even noticed. Then - i sobbed thru the last 20 pgs - i havent cried from ANY fiction for a long time. Yes, i get into books and really let them take me away, but this book has a special kind of writing and a special story that i never expected to effect me sooo much.
The author THEN does something so amazing at the very end - when i couldnt believe it could get any better. I KNEW what i wanted to happen - and i kept thinking to myself, "no, it wont - because it will just seem to corny if it does." (Even tho i wanted it so much.) She made it happen in a special way, without making it corny but while bringing me the hope and good feeling i needed after all the sobbing. (I dont want to give anything away just in case you dont know the story.)
This book scores an A+. If you love good, moving, American fiction you will love this.
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Reviewed in the United States on October 21, 2013
★★★★★ 4
Brava, Ms. Ward
Format: Paperback
I read this novel, along with nine others, for a college literature course. Of the ten, this was the only book to elicit a strong emotional reaction from me. There were moments when I hung my head in frustration, threw up my hands in respect (God bless Ward’s writing style), and wiped my face of tears and snot after crying my eyes out. An incredibly moving and poignant novel.
The novel opens with its narrator Esch, fourteen years old and pregnant. She often follows her brothers around, and is constantly surrounded by men as well as the gruesome society of dog-fighting. Esch’s predominant male surrounding is, perhaps, the main influence that encourages her to sleep with her brother’s friends, and to submissively pine for the one boy, Manny, who unforgivingly mistreats her. Though Esch’s character was impeccably frustrating, and borderline stereotypical and archetypal, her faults lie with a motherless young girl, who wants to be wanted and loved. Both frustrating and annoying, this characterization was, at times, unlikable, yet that is exactly what made Esch so human.
I applaud Ward’s lyrical writing style, as well her ability to write such gruesome and honest depictions that made me literally cringe when reading. Ward is able to effortlessly incorporate poetic language into her novel that, at times, made me set the book in both awe and envy, knowing I would never be able to produce such a product. I did find there to be a disconnect between the poetic language and the colloquial diction. That’s to say, I found it a bit unbelievable that Esch would speak so poorly to her family and friends, yet express herself so eloquently in her narration. Regardless, I found the poetic language to be successful and moving.
I knew before reading the book that it was centered on Hurricane Katrina. However, I was surprised that the novel was centered on the build-up to the hurricane. Katrina itself is more or less twenty pages. The chapter pertaining to the hurricane, as well as the aftermath of the hurricane, were the sections of the novel that I found most captivating. Living through the hurricane with Esch and her family was difficult to read, which is perhaps why Ward chose to limit its description. That said, I wish I had more of Katrina and its aftermath. I waited for the hurricane for 200 pages, and it seemed to end as soon as it started. Though I was unsatisfied by the ending, I appreciated that the novel was a work that was not so much about Katrina as it was about survival and family.
I was captivated by Ward’s poetic writing and honest characters. I will definitely be on the lookout for her other works, as well as an avid recommender of this novel.
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Reviewed in the United States on December 10, 2015
★★★★★ 5
00 361 pages Hurricane Katrina spawned an awesome number of literary works
Format: Kindle
Salvage the Bones by Jesmyn Ward
New York: Bloomsberry
$24.00 361 pages
Hurricane Katrina spawned an awesome number of literary works, and it may be that, given sufficient time to determine the full merits of Jesmyn Ward’s novel, Salvage the Bones, her work may be the most worthy. Perhaps the theory that great disasters (wars, natural disasters) invariably produce great works of art (operas, novels, paintings, etc.). This theory was often discussed by Flannery O’Conner who commented on the irony of the “creative renaissance” in southern literature which owes its origin to the extensive suffering and injustice associated with slavery and the Civil War.
The narrator of Salvage the Bones is Esch, a fifteen-year-old girl living in Bois Sauvage, a predominately black bayou town which happens to be in the direct path of Katrina. Set in the twelve days leading up to, and just after the arrival of the hurricane, the novel presents each day as a distinct vignette. Esch and her brothers spend each day preparing for the terrifying arrival. They have no intention of leaving and attempt to help their drunken father reinforce their shack with sheets of plywood. They collect and store bottles of drinking water. Food supplies tend to consist of Top Ramen moon pies, vienna sausage, potted meat and eggs gathered in the woods.
However, despite Katrina’s approach, Esch and her brothers seem to be primarily concerned about their white pit bull, China who has just given birth to five pups. China has developed a reputation in the dog fights that take place in “The Pit” in Bois Sauvage. She is a killing machine, a fact that makes Esch and her brothers the envy of their neighbors. The family’s meager economic security depends on China and each day is spent grooming, washes and feeding her. Indeed they fawn over the big dog, telling everyone that her puppies will grow up to have a killer instinct and therefore, they are invaluable. Much of the intrigue in Esch’s daily life revolves around protecting China and her pups. Skeetah is Esch’s oldest brother and the dog’s self-appointed trainer.
Esch has a multitude of problems. She struggles to love her handicapped
father and is haunted by the memory of her mother’s death. Now, she discovers that she is pregnant by Bois Sauvage’s “golden boy,” Manny, the boy who put the baby inside her is totally indifferent to the consequences of a rough and tumble frolic in the dark. As each day brings more distress, the homely, pug-faced teenager turns to her imagination, searching for a means to deal with the world around her, and as luck would have it, that is Edith Hamilton’s Mythology, which was a required reading at school. Esch begins to see the people around her as characters in her favorite book. She observes that all the girls in Bois Sauvage seem to be acting like their mythical counterparts: Psyche, Eurydice, Daphne - all of them running away from something or running after someone. However, the mythical character that Esch selects for her own role model is an ominous one. It is Medea, the fierce and vindictive wife of “the golden-haired Jason, who kills her own brother when he stands in the way of her love for Jason; and when that love turns to hate, she then murders Jason’s new wife, Creusa, her father, Creon and even kills her own children.
Of course, Esch is not going to harm anyone. Although she is filled with rage at the world around her, she is actually one of the forces that is holding everything together; China, the white pitbull is another. When Katrina reaches landfall, it comes like some apocalyptic act of God, sweeping everything away, including Esch’s home and all of their feeble efforts to battle the rising water. In the end Salvage the Bones acquires a kind of epic grander. Like Noah or Gilgamesh, the waters finally withdraw, leaving a confused and humbled Bois Sauvage. How much has been lost? The puppies are gone and so is China - but given the dog’s character, she may have survived. Perhaps Skeetah and his brothers will find her.
The reader is left with a singular image. Skeetah, the oldest brother sits in the wreckage of their home, and while everyone else is searching for missing children, furniture and cars, Skeetah looks at his brothers and announces, “She will come back to me.” Esch tells us:
“He will watch the dark, the ruined houses, the muddy appliances,
the tops of the trees that surround us whose leaves are dying for
lack of roots. He will feed the fire, so it will blaze bright as a
lighthouse. He will listen for the beat of her tail, the padding
of her feet in the mud. He will look into the future and see her
emerge into the circle of his fire, beaten dirty by the hurricane
so she doesn’t gleam anymore. So, she is the color of his teeth,
his eyes, of the bone bounded by his blood, dull but alive,
alive, alive, and when he sees her, his face will break and
run water.
And what of Esch who loves the white dog? She says that China will look at me and know “I am a mother.”
Hopefully, it is apparent that this is a remarkable book. However, it was almost lost in the loud braying and confusion that dominates much of publishing business now. Even so, it won the National Book Award in 2011.
Now, after a strange silence, it is beginning to get the attention that it deserves.
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Reviewed in the United States on March 3, 2016
★★★★★ 5
however the family takes precautions leading up to the storm to plan for one of the worst natural disasters in American history
Format: Paperback
Salvage the Bones is a deeply personal account of a young woman, Esch, and her family's life in the few days before Hurricane Katrina. The novel is set on the family's land in a small town in Mississippi. She lives with her father, her mother seven years deceased, and her three brothers, Skeetah, Randall, and Junior. Esch has recently learned that she is pregnant with the child of one of her older brother's friends. Skeetah takes care of his pitbull, China, helping her give birth and grooming her to fight for the family's honor. Randall plays basketball in hopes of gaining a college scholarship. Junior is a product of the mother's death, as she passed away giving birth to him, and leaves the family to mother him for the rest of his life. The novel describes the family's relationships with one another before the hurricane will rock them and test their connections to one another.
The novel is not set decisively around the hurricane, however the family takes precautions leading up to the storm to plan for one of the worst natural disasters in American history. Jesmyn Ward provides a semi-autobiographical context of the hurricane, as she was born in a small, rural community in Mississippi, similar to the one she describes in Salvage the Bones. Ward writes commonly in this tone, and her newest novel, Men Who Reaped, describes the lives of four men in her life that had suffered deaths far too young.
The novel is poetic in its writing style, and a beautiful read. Ward describes herself as a "failed poet," however, by reading the novel, it is clear that she succeeds in her poetry. Metaphors follow each line of description, and Ward is able to connect figurative language with the colloquial language of characters living in a rural community. It is undeniably pleasurable to read through the pages. Ward creates lovable characters and leaves the reader longing to discover what happens after the hurricane, and how the favorite characters are surviving in the wake of the natural disaster. There is a large dog presence throughout the novel, in addition to family ties, the novel provides a sense of companionship and a person's human relationship with his dog. The dog becomes a member of the family, and the relationship is called into question with the severity of the storm and the need to hold onto the most important things in times of crisis. I am overwhelmed with the poetic nature of this book and applaud Ward as an exceptional writer.
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Reviewed in the United States on November 23, 2015