Name: Victron Energy Cyrix-ct 12/24V Intelligent Battery Combiner
Brand: Victron Energy
Availability: InStock

From RV Parts Giant

Microprocessor-controlled heavy duty relay that automatically connects batteries in parallel when one reaches a pre-set voltage
Disconnects when voltage drops below float level
Excellent replacement for diode isolators
Virtually no voltage loss, so alternator or charger output voltage does not need to be increased
120 A model: 120 A continuous, 180 A for 5 s
230 A model: 230 A continuous, 500 A for 5 s, with a status LED

Sizes: Cyrix-ct 12/24V-120A, Cyrix-ct 12/24V-230A
Sizing: Universal fit — standard sizes and connections used across most RVs; suits lead-acid house batteries, and below 13.0 V it stays open so a smart alternator that
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Size chart

Size	H × W × D
Cyrix-ct 12/24V-120A int	1.8 x 1.8 x 3.1
Cyrix-ct 12/24V-230A int	2.6 x 4.0 x 2.0

About the Victron Energy Cyrix-ct 12/24V Intelligent Battery Combiner

The Cyrix Battery Combiner is a microprocessor controlled heavy duty relay that automatically connects batteries in parallel when one of them has reached a pre-set 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). 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.Microprocessor controlled battery combiner/isolatorsSpecificationsBrand: Victron EnergyPart number: Varies by optionType: Microprocessor-controlled battery combinerVoltage: 12/24VRatings: 120 A (180 A for 5 s) or 230 A (500 A for 5 s)Connects at: 13.0 to 13.8 VSize (H x W x D): 1.8 x 1.8 x 3.1 (120A) or 2.6 x 4.0 x 2.0 (230A)Size: H × W× D Cyrix-ct 12/24V-120A intelligent combiner1.8 x 1.8 x 3.1Cyrix-ct 12/24V-230A intelligent combiner2.6 x 4.0 x 2.0Victron part numbers: CYR010120011; CYR010230010; CYR010120011RIs it right for your rig?It connects the starter and house batteries in parallel when either one is charged to between 13.0 and 13.8 V, and separates them when the voltage falls.120 A model: 120 A continuous (180 A for 5 s). 230 A model: 230 A (500 A for 5 s), with a status LED.It suits lead-acid house batteries. Below 13.0 V it stays open, so a smart alternator that runs low may never close it.Lithium house battery? Victron's lithium manuals call for a current-limiting DC-DC charger such as an Orion.Compare the options in Cyrix vs Argofet vs Orion.Shop the full Victron Energy range at RV Parts Giant.