• $8.95 Shipping

    Anywhere in the lower 48, except oversize items

(0 item) - $0.00

You have no items in your shopping cart.


Cyrix-i front

More Views

  • Cyrix-i front

Victron Cyrix-i Battery Combiners

12/24V or 24/48V, 400A

Availability: In stock


* Required Fields

Product Description


    Please call for availability prior to ordering.

    No voltage loss
    The Cyrix-i Battery Combiner is a microprocessor controlled heavy duty relay that automatically connects batteries in parallel when one battery has reached a preset voltage (indicating that the battery is being charged), and disconnects when the voltage decreases below float level (indicating that one or both batteries are being discharged). Cyrix battery combiners are an excellent replacement for diode isolators, the main advantage being that there is virtually no voltage loss. In addition, four switch timing profiles can be chosen.

    Prioritising the starter battery
    In a typical setup the alternator is directly connected to the starter battery. The accessory battery, and possibly also a bow thruster and other batteries are each connected to the starter battery by Cyrix battery combiners. When a Cyrix senses that the starter battery has reached its connect voltage it will engage, to allow for parallel charging of the other batteries.

    Bidirectional voltage sensing
    The Cyrix senses the voltage of both connected batteries. It will therefore also engage if for example the accessory battery is being charged by a battery charger.

    Intelligent battery monitoring to prevent repeated switching
    The software of the Cyrix-i 400 does more than simply connect and disconnect based on battery voltage and with a fixed time delay. The Cyrix-i looks at the general trend (voltage increasing or decreasing) and reverses a previous action only if the trend has reversed during a certain period of time. The time delay depends on the voltage deviation from the trend. Four different connect/disconnect profiles can be selected to suit requirements.

    12/24 Volt or 24/48 Volt auto ranging
    The Cyrix-i 12/24 will automatically adjust to a 12V or 24V system and the Cyrix-i 24/48 will adjust to a 24V or 48V system.

    All Victron products (except batteries) come with a 5 year worldwide warranty, supported by an international network of service points and dealers.

    Continuous current 400 Amps
    Peak current 2000 Amps / 1 sec
    Current consumption when open 4 mA
    Emergency start Yes, 30s
    Microswitch for remote monitoring Yes
    Status indication Bi-color LED


    For more information, see the Victron Cyrix-i 12/24-400 Installation Manual.

Additional Information

    Additional Information

    Manufacturer Victron Energy
    Data Sheet No
    Product Manual No
    Warranty No