Victron Energy Cyrix-ct 12/24V 120A Battery Combiner Kit – $48.45 (Save 50%)
The Victron Energy Cyrix-ct 12/24V 120A Battery Combiner Kit is a bidirectional voltage-sensitive relay that charges a second or third battery from your engine's electrical system in cars, boats, RVs, and any other vehicle. It's the best-fit upgrade for DIY dual-battery builders and buyers comparing affordable branded combiner kits. Current price: $48.45, down from $96.90 — buy online now and apply coupon OUTPOST12 for an extra 12% off at checkout.
How to Install the Cyrix-ct 120A Kit
No cutting into factory wiring is required, so installation won't void your boat or vehicle warranty. Mount the relay, connect the heavy-gauge cables between the start and house battery positives, and ground the control wire — most installs are completed in under an hour with basic tools.
What's in the Kit
- Cyrix-ct 120A bidirectional voltage-sensitive relay
- Mounting hardware and connection lugs for 12V or 24V systems
Specifications
BrandVictron EnergyModel / SeriesCyrix-ct 12/24-120Product TypeBattery combiner / VSR kitCurrent Rating120 ampsSystem Voltage12V or 24V DC
Smart Battery Monitoring
Unlike basic relays, Cyrix software analyzes voltage trends rather than just fixed thresholds, reversing an action only if the trend truly reverses — preventing annoying charge cycling. It's bidirectional, so it also engages when a accessory battery charger is charging the house bank.
Cyrix-ct vs Orion-Tr
Choose the Cyrix-ct for passive, alternator-driven parallel charging with zero standby draw; choose the Orion-Tr DC-DC converter when you need isolated or current-limited charging, especially with smart alternators or lithium setups needing dedicated profiles.
Lithium Compatibility
The Cyrix-ct works with lithium batteries as a parallel connect relay, but lithium charge profiles should be managed by your charger or BMS — the Cyrix simply combines based on voltage.
Price and Deal Value
At $48.45 with a $96.90 compare-at price, you save $48.45 (50%). Stack coupon OUTPOST12 for 12% more, and orders over $45.00 ship free.
