{"product_id":"victron-cyrix-i-intelligent-battery-combiner-12-24","title":"Victron Energy - 12\/24V - Cyrix-i Intelligent Battery Combiner 12\/24V-400A","description":"\u003ch2\u003eVictron Cyrix-i 12\/24V-400A: Intelligent Battery Combiner for Dual-Battery Systems\u003c\/h2\u003e\n\u003ch3\u003eAdvanced Voltage Sensing and Smart Switching for Reliable Parallel Charging\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eVictron Cyrix-i 12\/24V-400A\u003c\/strong\u003e is a microprocessor-controlled \u003cstrong\u003eintelligent battery combiner\u003c\/strong\u003e designed to manage dual-battery systems in vehicles, boats, and off-grid installations. Unlike conventional voltage-sensitive relays (VSRs) that rely on simple voltage thresholds and fixed timers, the Cyrix-i analyses voltage trends to prevent nuisance switching caused by momentary loads or deeply discharged batteries. This ensures your auxiliary battery charges reliably without unnecessary cycling, extending the lifespan of your entire system.\u003c\/p\u003e\n\u003cp\u003eWith a continuous current rating of \u003cstrong\u003e400 A\u003c\/strong\u003e and a peak capacity of \u003cstrong\u003e2000 A\u003c\/strong\u003e, this combiner handles high-demand applications such as winching, bow thrusters, or large inverter loads. The auto-ranging input (8-36 VDC) automatically detects 12V or 24V systems, simplifying installation and reducing inventory complexity for installers.\u003c\/p\u003e\n\u003ch3\u003eWhy Trend-Based Switching Matters\u003c\/h3\u003e\n\u003cp\u003eStandard battery combiners often disconnect under short, high-current loads or fail to engage a depleted battery bank because the voltage collapses below the disconnect threshold. The Cyrix-i overcomes these limitations by evaluating the voltage trend over time. It only reverses a connection if the trend direction changes for a sustained period, preventing false triggers and ensuring stable parallel operation. Four selectable timing profiles allow customisation for different battery chemistries and usage patterns.\u003c\/p\u003e\n\u003ch3\u003eZero Voltage Drop for Maximum Efficiency\u003c\/h3\u003e\n\u003cp\u003eDiode-based isolators introduce a forward voltage drop (typically 0.6-0.7 V), requiring higher alternator or charger output voltages and wasting energy as heat. The Cyrix-i uses high-current relay contacts, resulting in \u003cstrong\u003evirtually no voltage loss\u003c\/strong\u003e. This means your batteries receive the full charging voltage, improving charge efficiency and reducing strain on your alternator or charger.\u003c\/p\u003e\n\u003ch3\u003eBidirectional Sensing and Dual Power Supply\u003c\/h3\u003e\n\u003cp\u003eThe Cyrix-i monitors voltage on both connected batteries and can be powered from either side. If one battery is too low to operate the relay, the other battery provides the necessary power. This ensures the combiner engages even when the starter battery is deeply discharged, as long as the auxiliary battery has sufficient voltage. For safety, the unit will not close if either terminal voltage is below 2 V (12V), 4 V (24V), or 8 V (48V), preventing unexpected operation during installation or maintenance.\u003c\/p\u003e\n\u003ch3\u003eEmergency Parallel Start Feature\u003c\/h3\u003e\n\u003cp\u003eA built-in push-button or remote switch input allows manual parallel connection for 30 seconds, providing an emergency start assist if the starter battery is flat. This feature is invaluable for marine, RV, and off-road applications where a failed start could leave you stranded.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e400 A continuous \/ 2000 A peak\u003c\/strong\u003e current rating for high-demand loads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntelligent trend-based switching\u003c\/strong\u003e prevents nuisance disconnects and ensures reliable charging\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto-ranging 12\/24V detection\u003c\/strong\u003e simplifies installation and reduces setup errors\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVirtually zero voltage drop\u003c\/strong\u003e compared to diode isolators, maximising charge efficiency\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBidirectional voltage sensing\u003c\/strong\u003e and dual power supply for robust operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmergency start assist\u003c\/strong\u003e via push-button or remote switch for peace of mind\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicroswitch output\u003c\/strong\u003e for remote status monitoring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact, vibration-resistant design\u003c\/strong\u003e with durable metal mounting bracket\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eBuilt for Demanding Environments\u003c\/h3\u003e\n\u003cp\u003eEncased in a rugged housing with high-current copper terminals, the Cyrix-i is engineered for the harsh conditions of engine rooms, vehicle chassis, and marine installations. The bicolour LED provides at-a-glance status indication, while the microswitch terminals enable integration with remote monitoring systems. Weighing just 0.9 kg, it adds minimal weight while delivering industrial-grade reliability.\u003c\/p\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eIdeal for \u003cstrong\u003edual-battery systems\u003c\/strong\u003e in 4WDs, caravans, motorhomes, boats, and commercial vehicles. Use it to combine a starter battery with an auxiliary deep-cycle battery, or to link multiple battery banks for charging from a single alternator or charger. The Cyrix-i is also suitable for 24V systems in trucks, buses, and heavy equipment.\u003c\/p\u003e\n\u003ch3\u003eUpgrade Your Battery Management Today\u003c\/h3\u003e\n\u003cp\u003eReplace unreliable diode isolators or basic VSRs with the \u003cstrong\u003eVictron Cyrix-i Intelligent Battery Combiner\u003c\/strong\u003e and experience smarter, more efficient parallel charging. Order now to ensure your dual-battery system delivers dependable power when you need it most.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable class=\"product-specifications\" style=\"width:100%; border-collapse:collapse; border:1px solid #d9d9d9; table-layout:auto;\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eModel\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003eCyrix-i 12\/24-400\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eContinuous Current\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003e400 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003ePeak Current\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003e2000 A During 1 Second\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eInput Voltage\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003e8-36 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eSwitch Timing Profiles\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003e4 Selectable Profiles\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eOver Voltage Disconnect\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003e16 V \/ 32 V \/ 64 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eCurrent Consumption When Open\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003e4 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eEmergency Start\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003eYes, 30 s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eMicro Switch For Remote Monitoring\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eStatus Indication\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003eBicolour LED\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eWeight\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003e0.9 kg (2.0 lbs)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth style=\"border:1px solid #d9d9d9; padding:8px; text-align:left; width:35%; vertical-align:top;\"\u003eDimensions (H X W X D)\u003c\/th\u003e\n\u003ctd style=\"border:1px solid #d9d9d9; padding:8px; vertical-align:top;\"\u003e78 x 102 x 110 mm (3.1 x 4.0 x 4.4 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Victron","offers":[{"title":"Default Title","offer_id":52364355666203,"sku":"Vic-CYR010400000","price":379.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0854\/3354\/9083\/files\/Vic-CYR010400000-01.jpg?v=1781658048","url":"https:\/\/www.nbcampingequipment.com.au\/products\/victron-cyrix-i-intelligent-battery-combiner-12-24","provider":"NB Camping Equipment","version":"1.0","type":"link"}