{"product_id":"victron-cyrix-li-ct-12-24v-230a-battery-combiner","title":"Victron Cyrix-Li-ct 12\/24V-230A intelligent Li-ion battery combiner - CYR010230412","description":"\u003ch1 style=\"color: #f87c24;\"\u003eCyrix-Li-ct 12\/24V-230A Intelligent Li-ion Battery Combiner\u003c\/h1\u003e\n\n\u003cp\u003eThe Victron Cyrix-Li-ct is a microprocessor-controlled battery combiner designed specifically for lithium-ion battery systems operating at 12V or 24V. It replaces a conventional VSR (voltage-sensitive relay) in dual-battery installations where a Li-ion service bank is paired with a starter battery, allowing charge sharing without risking damage to either battery. It is suited to marine, vehicle and off-grid applications where lithium batteries are in use.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #f87c24;\"\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eRated at 230A continuous current, suitable for high-demand dual-battery installations.\u003c\/li\u003e\n  \u003cli\u003eCompatible with 12V and 24V systems, covering the most common Li-ion battery configurations.\u003c\/li\u003e\n  \u003cli\u003eMicroprocessor-controlled logic replaces a standard VSR, with behaviour specifically tailored to lithium battery charge and discharge profiles.\u003c\/li\u003e\n  \u003cli\u003eDesigned to receive a control signal from a Li-ion BMS, allowing the BMS to open the combiner in the event of a fault condition such as over-voltage or over-temperature.\u003c\/li\u003e\n  \u003cli\u003eCompact and lightweight at 0.3 kg, making it straightforward to install in confined spaces such as engine bays or battery compartments.\u003c\/li\u003e\n  \u003cli\u003ePrevents the starter battery from being discharged by the lithium service bank, protecting engine start capability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #f87c24;\"\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe Cyrix-Li-ct operates differently from a standard voltage-sensitive relay. Rather than simply connecting batteries when a threshold voltage is detected, it is designed to work in conjunction with the charge\/discharge control outputs of a compatible Li-ion BMS. When the BMS signals that the lithium battery is approaching an unsafe state, the Cyrix-Li-ct opens the connection between the two banks, isolating the lithium battery from the rest of the system. This is a critical safety function that a conventional VSR cannot provide.\u003c\/p\u003e\n\n\u003cp\u003eThe \"ct\" designation refers to the charge\/discharge control terminals on the unit. These terminals accept a signal from the BMS to either allow or interrupt the combining function. In practice, this means the combiner behaves intelligently based on battery state rather than voltage alone, which is essential when working with lithium chemistries that have a much flatter discharge curve than lead-acid batteries.\u003c\/p\u003e\n\n\u003cp\u003eAt 230A, the unit handles the current demands of typical alternator charging and high-load scenarios without derating. The 12\/24V compatibility makes it a single stock item for installers working across different system voltages, reducing the need to carry multiple variants.\u003c\/p\u003e\n\n\u003ch3 style=\"color: #f87c24;\"\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eSKU: CYR010230412\u003c\/li\u003e\n  \u003cli\u003eSystem voltage: 12V \/ 24V\u003c\/li\u003e\n  \u003cli\u003eContinuous current rating: 230A\u003c\/li\u003e\n  \u003cli\u003eControl interface: Charge\/discharge control terminals (BMS signal input)\u003c\/li\u003e\n  \u003cli\u003eWeight: 0.3 kg\u003c\/li\u003e\n  \u003cli\u003eGTIN: 8719076034346\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #f87c24;\"\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMarine vessels with a lithium service bank and a separate lead-acid or AGM starter battery.\u003c\/li\u003e\n  \u003cli\u003eCampervans, motorhomes and HGVs using lithium leisure batteries alongside a vehicle starter battery.\u003c\/li\u003e\n  \u003cli\u003eOff-grid vehicles and mobile installations where alternator charging feeds a Li-ion battery bank.\u003c\/li\u003e\n  \u003cli\u003eAny dual-battery system where BMS-controlled isolation of the lithium bank is required for safe operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #f87c24;\"\u003eWhat Is Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x Victron Cyrix-Li-ct 12\/24V-230A battery combiner\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color: #f87c24;\"\u003eInstallation Notes\u003c\/h3\u003e\n\u003cp\u003eInstallation should be carried out by a qualified electrician or experienced marine\/vehicle electrical engineer. The Cyrix-Li-ct must be wired to the charge\/discharge control output of a compatible Li-ion BMS for the protection functions to operate correctly. Connecting this unit without a BMS control signal will prevent the safety isolation feature from functioning as intended. Ensure all cabling is rated for the 230A continuous load and that appropriate fusing is installed on both battery connections. For marine installations, follow the relevant wiring standards for your vessel class.\u003c\/p\u003e","brand":"Victron Energy","offers":[{"title":"Default Title","offer_id":59863679304014,"sku":"CYR010230412","price":132.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0796\/3698\/8238\/files\/VoltaconSolar_-_CYR010230412_-_Cyrix-Li-ct_12-24V-230A_intelligent_Li-ion_battery_combiner.webp?v=1781183321","url":"https:\/\/voltaconsolar.com\/products\/victron-cyrix-li-ct-12-24v-230a-battery-combiner","provider":"VoltaconSolar","version":"1.0","type":"link"}