Victron Cyrix-i Intelligent Battery Combiner 12/24V-400A
SKU: 80585654692

Victron Cyrix-i Intelligent Battery Combiner 12/24V-400A

$172.23 $191.37
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Description

Victron Cyrix-i Intelligent Battery Combiner 12/24V-400AVictron Cyrix i 12 24V 400A: Intelligent Battery Combiner for Dual Battery Systems Advanced Voltage Sensing and Smart Switching for Reliable Parallel Charging The Victron Cyrix i 12 24V 400A is a microprocessor controlled intelligent battery combiner designed to manage dual battery systems in vehicles, boats, and off grid installations. Unlike conventional voltage sensitive relays (VSRs) that rely on simple voltage thresholds and fixed timers, the

Victron Cyrix-i 12/24V-400A: Intelligent Battery Combiner for Dual-Battery Systems

Advanced Voltage Sensing and Smart Switching for Reliable Parallel Charging

The Victron Cyrix-i 12/24V-400A is a microprocessor-controlled intelligent battery combiner designed to manage dual-battery systems in vehicles, boats, and off-grid installations. Unlike conventional voltage-sensitive relays (VSRs) that rely on simple voltage thresholds and fixed timers, the Cyrix-i analyses voltage trends to prevent nuisance switching caused by momentary loads or deeply discharged batteries. This ensures your auxiliary battery charges reliably without unnecessary cycling, extending the lifespan of your entire system.

With a continuous current rating of 400 A and a peak capacity of 2000 A, this combiner handles high-demand applications such as winching, bow thrusters, or large inverter loads. The auto-ranging input (8-36 VDC) automatically detects 12V or 24V systems, simplifying installation and reducing inventory complexity for installers.

Why Trend-Based Switching Matters

Standard battery combiners often disconnect under short, high-current loads or fail to engage a depleted battery bank because the voltage collapses below the disconnect threshold. The Cyrix-i overcomes these limitations by evaluating the voltage trend over time. It only reverses a connection if the trend direction changes for a sustained period, preventing false triggers and ensuring stable parallel operation. Four selectable timing profiles allow customisation for different battery chemistries and usage patterns.

Zero Voltage Drop for Maximum Efficiency

Diode-based isolators introduce a forward voltage drop (typically 0.6-0.7 V), requiring higher alternator or charger output voltages and wasting energy as heat. The Cyrix-i uses high-current relay contacts, resulting in virtually no voltage loss. This means your batteries receive the full charging voltage, improving charge efficiency and reducing strain on your alternator or charger.

Bidirectional Sensing and Dual Power Supply

The Cyrix-i monitors voltage on both connected batteries and can be powered from either side. If one battery is too low to operate the relay, the other battery provides the necessary power. This ensures the combiner engages even when the starter battery is deeply discharged, as long as the auxiliary battery has sufficient voltage. For safety, the unit will not close if either terminal voltage is below 2 V (12V), 4 V (24V), or 8 V (48V), preventing unexpected operation during installation or maintenance.

Emergency Parallel Start Feature

A built-in push-button or remote switch input allows manual parallel connection for 30 seconds, providing an emergency start assist if the starter battery is flat. This feature is invaluable for marine, RV, and off-road applications where a failed start could leave you stranded.

Key Features

  • 400 A continuous / 2000 A peak current rating for high-demand loads
  • Intelligent trend-based switching prevents nuisance disconnects and ensures reliable charging
  • Auto-ranging 12/24V detection simplifies installation and reduces setup errors
  • Virtually zero voltage drop compared to diode isolators, maximising charge efficiency
  • Bidirectional voltage sensing and dual power supply for robust operation
  • Emergency start assist via push-button or remote switch for peace of mind
  • Microswitch output for remote status monitoring
  • Compact, vibration-resistant design with durable metal mounting bracket

Built for Demanding Environments

Encased in a rugged housing with high-current copper terminals, the Cyrix-i is engineered for the harsh conditions of engine rooms, vehicle chassis, and marine installations. The bicolour LED provides at-a-glance status indication, while the microswitch terminals enable integration with remote monitoring systems. Weighing just 0.9 kg, it adds minimal weight while delivering industrial-grade reliability.

Applications

Ideal for dual-battery systems in 4WDs, caravans, motorhomes, boats, and commercial vehicles. Use it to combine a starter battery with an auxiliary deep-cycle battery, or to link multiple battery banks for charging from a single alternator or charger. The Cyrix-i is also suitable for 24V systems in trucks, buses, and heavy equipment.

Upgrade Your Battery Management Today

Replace unreliable diode isolators or basic VSRs with the Victron Cyrix-i Intelligent Battery Combiner and experience smarter, more efficient parallel charging. Order now to ensure your dual-battery system delivers dependable power when you need it most.

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: 80585654692

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4.8 ★★★★★
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Verified Purchase
Corvette64Lover
Charlottesville, US
★★★★★ 5
Pleasant Scent, Effective Cleaner
Scent: Lemon Verbena Concentrate, Size: 32 Fl Oz (Pack of 2)
I love the delicate verbena scent in Mrs. Meyers Clean Day Multi-Surface Cleaner. It’s very mild compared to other common household cleaner’s like Mr. Clean (Mr. Clean is one that knocks me over and I can’t stand the smell). Many years ago it was fine, but the scent has changed and become stronger, and NOT for the better. Manufacturers on the whole, use way too much scent in their products, whether it’s laundry detergent, fabric softener, hygiene products and anything else that scent is added to. Just take a walk down the detergent isle of your grocery store and if you aren’t immune to scent, you will find it overwhelming. This cleaner is not overpowering and smells just like verbena, a fresh, clean, green smell. I also love the way it cleans my wood floors, sinks, countertops, stainless steel fridge, stove & dishwasher, & everything else I clean with it. It leaves the surfaces “squeaky clean” without any streaks. Is it a good deep cleaning cleaner? I don’t know for sure since I’ve never used it to clean up muddy, greasy, grimy, dirty areas in my home. It does remove dark marks on painted walls but I haven’t tried it on heavy dirt and grime. I imagine it’s comparable to Murphy's Oil Soap, which is another brand I love and have used for years. If the scent of cleaners is an issue for you, and you like verbena, you should love this cleaner. A little bit goes a long way in a bucket of water (for washing floors, etc.). I usually use allot less than is recommended (in everything from laundry detergent to household cleaners). Especially my laundry detergent. I used to use the recommended amount and found with concentrated products, the amount recommended is way too much. I could feel the soap in my clothing after the wash cycle finished. I had to re-rinse all my loads. Then I got smart and cut way down on detergent and included vinegar in the final rinse cycle. Manufacturers love to sell more product, so don’t go by what they state on the container. Use your own wise judgement. On a side note, I love Costco’s Industrial Strength powdered laundry detergent but I cut way back to 1/4 cup per med to large loads. The white dress shirts and tee shirts are much brighter & whiter compared with many other detergents I’ve used in the past. I highly recommend this product for all of the above reasons. Give it a try at least once. You may love it too!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 17, 2024
J
Verified Purchase
Judy L.
Bozeman, US
★★★★★ 5
Excellent cleaning product, but lavender is a bit too strong for me.
Scent: Lavender Spray, Size: 16 Fl Oz (Pack of 3)
I bought 3 bottles of the lavender cleaner, and have used it to clean a number of different surfaces. In one of the bathrooms, I used it to clean dust from 6-panel doors, the cabinets, the counter and sink, the inside and outside of the tub area, and the outside of the toilet. When I was done, everything in the bathroom looked so clean. Even the dust that collects in the corners of the 6-panel doors was gone. Next, I tried to clean stainless steel refrigerator in the kitchen. The refrigerator wasn't dirty, but it had streaks from water dripped from the ice maker and fingerprints. This cleaner didn't work as well on the refrigerator. Although it did remove the fingerprints and water streaks, it left streaks that I had to clean using another method. Actually, a clean washcloth and warm water worked very well to remove the streaks. This cleaner also left streaks on my built in stove that has a glass front. So, I don't believe this cleaner works well on reflective surfaces such as mirrors, glass, or stainless steel. Although it does clean these surfaces well, it leaves a residue that causes streaks. The last surface I tried cleaning today was some of my kitchen cabinets. These cabinets collect not only anything in the air from cooking, but, since I am a smoker, they also collect some nicotine. On the cabinets that I cleaned, this cleaner did remove stains from both as was evidenced by the washrags I was using. To-date, the only cleaner I have found that would effectively clean these stains was Windex. So, I was impressed at how well this cleaner worked. It was working so well, I wanted to keep going, but, unfortunately, ran out of time. Overall, I would recommend this cleaner for anything but mirrors, glass, and stainless steel. The lavender scent of the bottles I got was a nice scent, but a bit overwhelming in my opinion. Once I use up the bottles that I have, I will be trying one of the other scents, possibly the honeysuckle or lemon scents. UPDATE 05/21/25: We don't use our dining room which is furnished with a 40 year old solid wood dining room set. All too often the table is used for keeping appliances or other items that I plant to get rid of or need to find a permanent storage place. I finally got the table clear off and saw a decent layer of dust on it. So, I decided to try this cleaner on it. This cleaner not only removed all dust and spots on the table top but also the layers of old furniture polish. I was so pleased that the table was clean with a natural shine that did not feel oily. Now all I have to do is clean the rest of dining room furniture. I will definitely be using this cleaner. I hope this review was helpful for you.
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Reviewed in the United States on April 23, 2025
V
Verified Purchase
Valeria Rivera
Birmingham, US
★★★★★ 4
Smells amazing while cleaning, light lasting fragrance
Scent: Peppermint, Size: 16 Fl Oz (Pack of 1), Scent: Peppermint, Size: 16 Fl Oz (Pack of 1)
I really enjoyed using this Mrs. Meyer’s Clean Day Multi-Surface Cleaner, especially because of the peppermint scent. It smells incredibly fresh and pleasant while you’re cleaning, not overpowering, just very clean and uplifting. I tested it on multiple surfaces including countertops, tables, and other everyday areas, and it performed well across the board. It cleans effectively without leaving residue or streaks, and it feels gentle enough for regular use. The only reason I’m giving it four stars instead of five is because the scent fades fairly quickly after cleaning. While it smells amazing at first, the fragrance doesn’t linger for very long. That may be a plus for people sensitive to strong smells, but if you’re looking for a long-lasting scent, this might fall a bit short. Overall, it’s a solid multi-surface cleaner with a beautiful scent and reliable cleaning performance. I’d definitely repurchase, especially during seasonal releases.
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Reviewed in the United States on February 7, 2026
K
Verified Purchase
Katie Meeks
Phoenix, US
★★★★★ 5
Bang for your buck
Scent: Lemon Verbena Concentrate, Size: 32 Fl Oz (Pack of 2), Scent: Lemon Verbena Concentrate, Size: 32 Fl Oz (Pack of 2)
The amount of spray bottles you get from this concentrate is actually insane. I won’t have to buy surface cleaner until next year. No but seriously, this is a great price point and you get so much from it. All of the Mrs Meyers products have awesome conscious ingredients that I feel comfortable having around my kids and pets (and they’re insanely gross creatures too) The scent is just a cherry on top!!
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Reviewed in the United States on May 26, 2026
A
Verified Purchase
Anthony Brown
Port Orchard, US
★★★★★ 5
a miracle in a jar
Scent: Earthy, Nutty, Refreshing, Size: 4.06 Fl Oz (Pack of 1)
This item did exactly what it was expected to do, and I couldn’t be happier with my purchase. It works as described, is easy to use, and the overall quality exceeded my expectations. The price was great for what you get, making it an excellent value. Everything about it—from performance to convenience—has been spot on. My sister has noticed an extreme growth in her hair since using this product. I’m very satisfied and would definitely recommend this to anyone looking for something reliable and well worth the money!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 5, 2026

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