SKU: 3893025266

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

Sale price$152.43 Regular price$169.37
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Ships within 48 hours · Estimated delivery Aug 14 - Aug 19

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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: 3893025266

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J
JoeV
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★★★★★ 5
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Size: Large, Color: Dark Grey
These turned out to be one of those purchases that will become part of the regular summer rotation. The fit is excellent, the fabric feels lightweight without feeling cheap, and they’re extremely comfortable in warm weather. What I like most is that they strike a really nice balance between casual and polished. They don’t look like gym shorts, but they’re just as comfortable. The dark grey color looks clean and versatile, and the 7-inch length feels modern without being overly short. The fabric has a smooth, cool feel and dries quickly, which is great for hot days or even light water exposure. The elastic waistband and drawstring are comfortable without looking sloppy, and the hidden zipper pocket is actually very useful for keys or cards. Another thing I noticed is their durability that they hold their shape well and the material doesn’t wrinkle easily. They work equally well for relaxing, walking around town, travel, or casual dinners outside during summer. Overall, these feel more expensive than they are. Comfortable, lightweight material, practical, and surprisingly stylish.
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Reviewed in the United States on May 22, 2026
J
Juan Garcia
Boise, US
★★★★★ 5
Fast drying polyester short for casual wear or to use at the beach
Size: Small, Color: Army Green, Size: Small, Color: Army Green
The TACVASEN men's 7" casual beach shorts are lightweight stretchy polyester shorts featuring an elastic waist band for added comfort. These shorts are nicely constructed and durable with no visible signs of defects out of the package. These shorts wear and feel comfortable for all types of activities or for just casual wear if you just want to lounge around. There are two average sized pockets one on each side and one zippered side pocket for added security and a rear pocket suitable for a normal sized wallet. I'm a 5'10" man and these shorts reach to the top of my knee. These shorts also have an average sized drawstring for added tightness if desired. The polyester material allows for fast drying. Overall these shorts offer a good value for wearing to most occasions.
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Reviewed in the United States on June 1, 2026
K
KaiCie
New York, US
★★★★★ 5
Great casual shorts
Size: Small, Color: Blue Gray
These men’s water-resistant beach shorts have been a great purchase. I got them for my son, and he says they’re extremely comfortable. He especially loves how soft the material feels, which makes them easy to wear all day at the beach, pool, or just casually around town. The water-resistant fabric works well and dries quickly, which is a huge plus for swimwear. They fit nicely and allow for plenty of movement without feeling stiff or heavy. Overall, these are comfortable, well-made shorts with great material, and my son has been really happy with them.
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Reviewed in the United States on May 10, 2026
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wildwoman
West Palm Beach, US
★★★★★ 4
Nice shorts but no fly
Size: Medium, Color: Blue Gray, Size: Medium, Color: Blue Gray
These shorts are well made with three pockets on the sides, 2 standard and one zippered, along with one pocket on the back. They are made of a polyester fabric and do feel as though they will be waterproof. They are well constructed and should hold up well. My issue with these shorts is that they have no fly, just fake stiching on the front. Yes, they say they are for the beach, but that is no reason not to have a fly. Swim trunks are one thing, no one expects a fly on them, but on shorts, yes I do. I always like to include a picture of the laundry instructions,, I hate getting something and discovering it takes special care.
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Reviewed in the United States on March 11, 2026
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Dan martin
Alexandria, US
★★★★★ 5
These are keepers for sure
Size: Medium, Color: Dark Grey, Size: Medium, Color: Dark Grey
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