Victron CYRIX-CT 12/24V-120A Intelligent Battery Combiner

The Victron CYRIX-CT 12/24V-120A Intelligent Battery Combiner is a microprocessor-controlled relay designed for serious boaters and anglers who demand reliable dual-battery system management. If you've spent years on the water, you understand that power management can mean the difference between a successful fishing trip and being stranded with dead electronics. This intelligent combiner automatically connects auxiliary batteries in parallel when your main battery is charging, then disconnects them when the charge cycle ends—eliminating the need for manual switching and preventing the drain that cripples backup power when you need it most.

Operating across both 12V and 24V systems, the CYRIX-CT handles up to 120 amps of continuous current, making it suitable for vessels with heavy electrical loads including fish finders, trolling motors, navigation systems, and cabin amenities. The unit employs advanced voltage-sensing logic to monitor charging status; when the primary battery reaches a preset voltage threshold, the relay energizes and couples your auxiliary battery to share the charge. Once the alternator stops charging and voltage drops below the disconnect threshold, the relay silently opens, protecting your main starting battery from discharge. At just 0.4 lbs and measuring 5 x 3 x 7 inches, installation is compact and unobtrusive in engine compartments or battery lockers.

Anglers running overnight trips, guide operations, or extended offshore excursions benefit most from this combiner, as it ensures auxiliary battery banks charge fully underway while remaining isolated during idle periods. The microprocessor design eliminates the stuttering and chatter of traditional mechanical relays, delivering silent operation that won't interfere with electronics or annoy crew. Compatible with most marine and RV dual-battery setups, the CYRIX-CT integrates seamlessly into existing wiring harnesses and works with lead-acid, lithium, and gel battery chemistries. Victron Energy's reputation for marine-grade reliability means this combiner will outlast decades of boating seasons.