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]
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SKU: 16632733526

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4.7 ★★★★★
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R
Rick G
Alexandria, US
★★★★★ 4
Freaks my dogs out.
Color: Blue, Color: Blue
My dogs really don't know what to make of these. They mostly follow it around, staring at it curiously, but semi-afraid to approach it. That, or they'll bark at it. It charges quickly and has multiple modes to engage your pet with. It also locks closed securely ... for the most part. That said, there are some downsides. This toy is mostly made for smaller dogs. I'd say 40 or 50 pounds max. While the plastic shell feels hard and durable, it's not hard enough for a big dog's jaws. My big bulldog mix bore down on this with his teeth, and I hard the plastic starting to snap. It's tough, but not great if your dog is the type who likes to put the pressure on.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 4, 2026
C
Cyndi
New York, US
★★★★★ 5
Best money for a dog toy I've spent in a long time
Color: Blue
This interactive ball is small but packs a lot of fun and playtime for my dog's they go crazy every time we bring it out and turn it on, it lights up has several modes vibrates they love it will be purchasing amount for certain
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
A
AN
Birmingham, US
★★★★★ 4
Fun, engaging dog toy that keeps pets entertained, but battery life could be better
Color: Blue
I’ve been using the ITEHZTO Interactive Dog Ball Automatic Dog Toy for my dog, and overall it’s been a great way to keep him active and engaged, especially when I’m busy or not able to play fetch. The different play modes are a nice feature, and the unpredictable movement really grabs his attention. It does a good job of encouraging exercise and mental stimulation. The USB-C charging is convenient, and I appreciate not having to mess with batteries. The size is also good for small to medium dogs, and it feels durable enough to handle regular play. The reason I’m giving 4 stars instead of 5 is that the battery life doesn’t last as long as I expected, especially when using the more active modes. Also, on harder flooring it can be a bit noisy as it bounces around. Overall, it’s a fun and useful interactive toy that my dog genuinely enjoys. With slightly longer battery life and quieter operation, it would easily be a 5-star product.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 6, 2026
N
nubbles
Grantham, US
★★★★★ 5
Great stimulation for a 'busy' pup
Color: Blue, Color: Blue
I’ll admit I was a little skeptical since my German Shepherd is well over the recommended weight limit for this ball, but it’s been a huge hit. Even though it’s technically for smaller breeds, it has held up remarkably well so far. I’ve mostly kept it on the gentle mode, and that’s more than enough to grab her attention and keep her occupied for quite a while. The design is actually much tougher than the warnings suggest; the two halves screw together so securely that she hasn't been able to pry it open, which is impressive for a tough chewer. It’s been a great way to keep her mentally engaged indoors without worrying about the toy falling apart immediately.
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Reviewed in the United States on May 2, 2026
C
customer reviewer
Battle Creek, US
★★★★★ 4
Recommended for Small, Mellower Dogs, not the destructive, chewy kind
Color: Blue, Color: Blue
My dog loved this ball, maybe a little too much. He attacked it like it was a wild animal and left teeth marks and tears in the outer plastic. I decided to give it to my cats instead, who initially were very intrigued by it. The buff kitty even chirped to see it. He would roll around with it as it vibrated and hopped, but after a while he wasn’t that interested. I think I can get them to play with it if I don’t use it with them every day, maybe wait a few weeks between playtimes. Perhaps it is a little too large for cats. My dog, who is less than 30 lbs., might be too big for it, or maybe just his mouth is, or maybe because he’s a Boston Terrier and he always feels like it’s his duty to destroy all toys (all my Bostons were like that). But I don’t think I will let him have it again. Maybe a toy breed or puppy might be more of the appropriate size for this ball. Or someone who isn’t as destructive. The instructions are almost unreadable because the text is so small. I couldn’t understand what I was supposed to do with the “installation process.” I did figure out how to turn it on and off by myself, however. There are four modes when it is on: gentle, normal, active, and lighting only (no vibration). As a human, it is a fun thing to watch, even if it is just for the light show.
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Reviewed in the United States on May 6, 2026

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