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Product Summary
Capacity (Ah)
Warranty (Years)
H: 46mm x W: 46mm x L: 80mm

£44.98Including VAT & Standard Delivery
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Victron Intelligent Battery Combiner Cyrix-ct 12/24V-120A -CYR010120011

Please Note: Delivery lead time on this item is 7-10 working days

The Cyrix-ct intelligent battery combiner is a microprocessor controlled heavy duty relay that automatically connects batteries in parallel when one of them 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 more batteries are being discharged).

Intelligent battery monitoring to prevent unwanted switching: The software of the Cyrix-ct 12/24 does more than simply connect and disconnect based on battery voltage and with a fixed time delay. It will analyse 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.

Bidirectional voltage sensing and dual power supply: Sensing the voltage of both connected batteries, the Cyrix will engage if for example the accessory battery is being charged by a battery charger. The Cyrix-ct 12/24 also has a dual power supply and will close if the voltage on one battery is too low to operate the Cyrix but will not close if the voltage on one of the two battery connections is lower than 2V (12V battery) or 4V (24V battery).

Long bolts to allow connection of more than one power cable: 13 mm (M6)

Protection against overheatingThe Cyrix will disengage in case of excessive contact temperature, and re-engage again after it has cooled down.

No voltage loss: Cyrix battery combiners are an excellent replacement for diode isolators. The main feature is that there is virtually no voltage loss so that the output voltage of alternators or battery chargers does not need to be increased.

Prioritising the starter battery: In multiple battery connections, when a Cyrix senses that the starter battery has reached the connect voltage it will engage, to allow for parallel charging of the other batteries.

Parallel connection in case of emergency (Start Assist) The Cyrix can also be engaged with a push button (Cyrix remains engaged during 30 seconds) or a switch to connect batteries in parallel manually. This is especially useful in case of emergency when the starter battery is discharged or damaged.

Height (mm)


Length (mm)


Width (mm)




Product Type

Battery Combiner

Warranty (Years)


Weight (kg)


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