Victron Cyrix-ct Intelligent Battery Combiner 12/24V-230A VSR
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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Jim M
Phoenix, US
★★★★★ 5
Vendor support is excellent
Color: 7-in-1 Black, Size: Rechargeable Set
UPDATE 2: The vendor proactively reached out to me and sent me a replacement. The replacement works well so I’ve given them 5 Stars. UPDATE: It really doesn’t ever go in straight so every cork is at risk for breaking off. I lowered rating to two. It ultimately works about 85% of the time. Meh. Works most of the time, but has issues. It wrecks corks much more often than the Brookstone one we had before. It seems to twist in sideways so that it runs along the glass of the bottle neck instead of straight down. This causes it to destroy the corks fairly frequently… and on occasion it destroys it so much that you can’t get the cork out at all. Pros: Quiet Has the bottle sealers and suction. Recharges on base. Cons: Damages corks Sometimes destroys corks to point of not being able to extract them. Goes in crooked.
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Reviewed in the United States on January 3, 2026
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Andrew
Pawtucket, US
★★★★★ 5
Great for any wine drinker
Color: 7-in-1 Black, Size: Rechargeable Set
This is really neat and works well. Easy to charge, but read the directions first, and great value. If you like wine, this is a great product.
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Reviewed in the United States on May 16, 2026
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Anthony M
Louisville, US
★★★★★ 5
Great value and works well
Color: 7-in-1 Black, Size: Rechargeable Set
I wasn’t sure this would compare to the name brand one I’ve had for years but it finally died and I needed a replacement. The Circle Joy amazed me with how easily it removes corks, ejects the cork and vacuum seals the bottle when you’re done. Some reviews mentioned they were concerned with durability but it’s still working great and no signs of wear after two months of regular use.
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Reviewed in the United States on May 14, 2026
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Dr Gus
Los Angeles, US
★★★★★ 5
Great value and does the job admirably.
Color: 7-in-1 Black, Size: Rechargeable Set
I have been using this for several months now. Still haven't needed a charge. Love the little knife to remove cover from cork. Love the decanting attachment. Removes cork easily without much noise and then spits it out. Excellent value. Highly recommend.
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Reviewed in the United States on May 17, 2026
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Divya
Dallas, US
★★★★★ 5
Game Changer for Wine Lovers
Color: 8-in-1 Silver, Size: Rechargeable
Circle Joy Electric Wine Bottle Opener and I’m honestly really impressed. Setup was super simple, and it works exactly as advertised—just place it on the bottle, press a button, and the cork comes out smoothly in seconds. No struggling, no broken corks, and no mess. It makes opening wine feel effortless and a lot more enjoyable. I also love the sleek design—it looks modern and feels sturdy, not cheap. If you have the set with accessories, the extras like the foil cutter and pourer are a nice bonus and actually useful. Overall, this is a great little gadget, especially if you open wine often or just want something convenient and easy to use. Definitely a solid buy or even a nice gift idea.
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Reviewed in the United States on April 16, 2026

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