SKU: 55188970908

Victron Cyrix-i Intelligent Battery Combiner 24/48V-400A

Sale price$179.41 Regular price$199.35
Save 10%

Pay in installments of $49.84 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 25 - Aug 30

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Victron Cyrix-i Intelligent Battery Combiner 24/48V-400AAdvanced 400A Battery Combining for 24V and 48V Systems The Victron Cyrix i is a heavy duty, microprocessor controlled battery combiner designed to safely and efficiently manage multi battery configurations. Ideal for marine vessels, large off grid power setups, and commercial vehicles, this robust 400A relay automatically connects batteries in parallel when one has reached a preset charge voltage, and disconnects them when the voltage drops below the

Advanced 400A Battery Combining for 24V and 48V Systems

The Victron Cyrix-i is a heavy-duty, microprocessor-controlled battery combiner designed to safely and efficiently manage multi-battery configurations. Ideal for marine vessels, large off-grid power setups, and commercial vehicles, this robust 400A relay automatically connects batteries in parallel when one has reached a preset charge voltage, and disconnects them when the voltage drops below the float level.

Unlike traditional diode isolators, the Cyrix-i introduces virtually no voltage drop. This critical efficiency eliminates the need to increase the output voltage of alternators or battery chargers, ensuring maximum power delivery. The unit automatically detects either 24V or 48V system voltages, making it a highly versatile component for demanding electrical architectures.

Intelligent Trend-Based Monitoring

Standard battery combiners often struggle with short, high-current loads, disconnecting batteries prematurely if the system voltage dips temporarily. Conversely, they might fail to connect a heavily discharged battery bank because the sudden inrush current instantly pulls the voltage below the disengage threshold. The Cyrix-i solves these issues using intelligent software that monitors general voltage trends rather than reacting to sudden spikes or drops. It will only reverse a switching action if a voltage trend has reversed over a specified time period, which dynamically adjusts based on the severity of the voltage deviation. Installers can also select from four distinct switch timing profiles to suit specific system parameters.

Bidirectional Sensing and Priority Charging

In typical setups, the alternator connects directly to the starter battery. The auxiliary battery, along with heavy loads like bow thrusters, connects to the starter battery via the Cyrix combiner. The system prioritises the starter battery, only engaging parallel charging for auxiliary banks once the primary battery is adequately charged.

Featuring bidirectional voltage sensing, the unit also engages if the auxiliary battery receives a charge from an independent source, such as a solar array or mains battery charger. A dual power supply ensures the internal relay remains operational even if one battery's voltage drops significantly. To prevent unexpected activation during maintenance, fail-safes prevent engagement if connection voltages fall below critical levels (below 4V for 24V systems, or 8V for 48V systems).

Built for Emergency Preparedness

For critical situations where a starter battery is heavily depleted or damaged, the system includes an emergency parallel connection feature. This start assist function can be triggered manually via a push button or remote switch, locking the relay closed for 30 seconds to allow engine starting directly from the house or auxiliary battery bank.

Hardware Built for Professional Installations

The physical design features heavy-duty metal studs to securely accommodate large gauge battery cables, sustaining optimal current flow under peak 400A loads. A front control connector allows for easy integration of the start assist trigger, while an integrated multi-colour status LED provides clear operational monitoring. Side-mounted auxiliary micro switch contacts are also included for remote status tracking.

Key Features

  • Auto-ranging capability detects 24V and 48V system voltages automatically
  • Zero voltage loss design outperforms traditional diode isolators
  • Intelligent trend-based monitoring prevents unwanted nuisance switching
  • Bidirectional sensing allows for charging and voltage detection from either connected battery
  • Emergency start assist function enables manual parallel connection for engine starting
  • Four selectable switch timing profiles for tailored system integration
  • Heavy-duty terminals and an integrated mounting bracket ensure a secure, robust installation

Complete Your Power System

Ensure your auxiliary and starter batteries are always properly managed and ready for heavy loads. Add the Victron Cyrix-i 400A Intelligent Battery Combiner to your 24V or 48V electrical system today to experience seamless, high-efficiency power distribution.

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: 55188970908

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 8 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
I
Verified Purchase
Ilein
Lowell, US
★★★★★ 1
Not Leak Proof
Size: X-Large: 28" x 34"
horrible do not buy! leaks threw and caused a permanent stain and smell. thought it was good but after a week i noticed the smell and lifted up the mat there was complete pee under.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 12, 2026
J
Verified Purchase
Jarett
Waukegan, US
★★★★★ 5
Great investment
Size: Small: 24" x 24"
It catches the pee that runs off the pad, great investment!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 12, 2026
K
Verified Purchase
Karen
Cuba, US
★★★★★ 2
It doesn’t stop leaks from the pee pad.
Size: X-Large: 28" x 34"
I’m trying to figure out how not to have leaks occasionally. I’m going to call the company to see if there’s something I should be doing.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 3, 2026
M
Verified Purchase
Michael Holbrook
Lexington, US
★★★★★ 5
Training pad holder literally rises above the competition
Size: 24"X24"
We have been through a variety of potty pad products during our housetraining journey with our Havanese pup. The Petphabet training pad holder has been the best by far and has ended our search for a number of reasons: Pros: 1. Grid design keeps puppy from chewing/tearing/destroying/eating the potty pad. 2. Size is perfect for our pup even as he is getting bigger (15 lbs) - mileage may vary for larger pups/dogs. 3. HERE IS THE REASON THIS PAD HOLDER STANDS OUT AMONG THE COMPETITION - The top grid is elevated off the surface layer where the pad lays, which allows an air gap between the standing surface and the potty pad. This allows the urine to fall to the pad without pooling and without your pup stepping in it and tracking it everywhere! Cons/Areas for improvement: 1. We like blue but it's not for everyone! 2. The "posts" holding the mesh up from the base carry all of the weight of the dog and in some cases jumping or playing on the pad holder can cause the edges of the posts to cut through the potty pad liner, causing a (minor) leak. I would recommend the manufacturer design any subsequent models with larger, flat surfaces on the post supports. 3. The 4 piece design means the base is not solid but has a split down the middle that is not waterproof. This can be remedied by caulking the 2 sides of the base together with clear silicone assuming you will no longer need to disassemble the unit. 4. Poo can get caught in the grid if your pup has loose stool. If not removed quickly your pup may step on it and really pack it in there. After many trials with other products, we are very happy with this training pad holder and have bought a total of 3 units for different areas of our house. I highly recommend for small dogs/pups!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 28, 2023
K
Verified Purchase
KJP
Grantham, US
★★★★★ 5
Works Great!!!
Size: 18"X24"
I have 2 pugs and have trained them to "go" on a grid. I started with another brand (Klean Paws) but found this brand (Petphabet Puppy Training Pad Holder) to be superior in several ways. This training pad holder is designed much better. The plastic grid is well supported so the puppy does not get wet paws when waling on the grid. The overall design of the training pad holder makes it very easy to replace training pads. Standard training pads (17.5" x 23.5") fit the medium Petaphet puppy training pad holder perfectly. Just lay the pads flat on the bottom, place the grid on top and clip it all into place with the frame. The frame holds everything in place and keeps any loose ends, hidden from mischievous puppies. It takes a lot of effort to train puppies to "go" on a grid, but it's worth it. I started with one grid in a crate. Then, I gaited off my kitchen area, with 4 medium grids (as shown in the video). You cannot expect a puppy or dog to just go to one spot and do their thing. Dogs like to sniff and walk around before they "go." They need room. I suggest 2 medium girds per medium-sized dog. I have 2 pugs and 4 grids. I reward them with a pinch of peanut butter, whenever I see them go on the grid. I simply pickup the #2 with TP and flush it down the toilet. I replace the pads, in the 4 grids, once a day. NOTE: The sellers of the dog training pad holders seem to come and go. If you cannot find this particular training pad holder, do a search for Mesh training pad holder. Be sure to get a training pad holder that has 3 parts -- the bottom tray, the mesh grid, and a frame that holds it all together. Some of the simpler grids have just 2 parts (bottom tray and top). They are simpler, but do NOT keep paws dry.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 1, 2018

recommand products