SKU: 16632733526

Victron Cyrix-ct Intelligent Battery Combiner 12/24V-230A VSR

Sale price$152.43 Regular price$169.37
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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.

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: 16632733526

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Susan L Van Eyck
Natrona Heights, US
★★★★★ 5
Attractive, well-made functional storage
Color: Dusty Blue, Size: 2 Layers, 20 Hooks
I'm quite happy with this product. It's an orderly and attractive way to store a lot of jewelry. I've put my favorites in the visible front drawer and can easily see the rest by pulling out the back drawer. I looked at a similar storage box with see-through panels on both sides, but it didn't look quite as well made and you'd have to turn it around to see side B (i.e., no less work than pulling out the back drawer). This unit feels well put together, looks nice, and sits stably on top my dresser. I'm only using it for chain-and-pendant style necklaces (leaving the bulkier stuff in an upright acrylic spoke-style container) but have it fully loaded and have doubled up on a few pegs. None of the pegs bent while I was adding pieces.
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Reviewed in the United States on March 28, 2026
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Michelle M
Grantham, US
★★★★★ 5
Fantastic Necklace Organiser
Color: White, Size: 2 Layers, 20 Hooks
This is a great necklace organiser It has helped me keep all my necklaces in order - putting gold on one tray and silver the other. Keeps them for getting all tangled up and looks super nice. Not to mention the slim design doesn’t take up much space. Love it!!
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Reviewed in the United States on May 28, 2026
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Lisko
Carnegie, US
★★★★★ 5
Great necklace organizer!
Color: White, Size: 2 Layers, 20 Hooks
This necklace organizer is perfect for keeping necklaces separated and in view. I was tired of having them tangled in my jewelry box and this does the trick. Plus it is very well made and looks lovely in my closet. I highly recommend this for people who want to keep their necklaces organized!
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Reviewed in the United States on May 15, 2026
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Zilly115
Lake Worth, US
★★★★★ 5
So pretty!
Color: White, Size: 2 Layers, 20 Hooks
I got the two drawer box. Very nice quality necklace organizer. Looks beautiful with all my necklaces in it. Versatile as well as it has compartment on the bottom so that when you pull the drawer out the longer necklaces stay contained. You can also hang more than one necklace on the little hooks. I feel this will provide superb protection for my jewelry even with travel. I wish I got this sooner! It is a beautiful way to display the necklaces but I keep mine in my dresser drawer and it fits perfectly.
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Reviewed in the United States on April 11, 2026
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Michele Wagner
Pawtucket, US
★★★★★ 5
Perfect storage for necklaces
Color: Black, Size: 2 Layers, 20 Hooks
I adore this necklace organizer. I have many necklaces that I was storing in the top of my jewelry box on little hooks, but when I close the box top, everyting would get tangled up. There were not enough hooks to accommodate my collection. With this box, I have it standing upright next to my jewelry box and with the clear lid, I can easily see all my necklaces right away when deciding which one I want to wear that day. I put all my favorites in the top drawer for easy access. The drawers pull out easily and nothing is tangled. I often switch the back drawer with the front to change things up. Construction feels well made.
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Reviewed in the United States on March 14, 2026

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