Victron Energy Cyrix-ct 12/24V 120A Battery Combiner Kit
Free shipping over $49
60-day hassle-free returns
A complete kit to add a second (or third) battery to a car, boat, or RV. Built around the Cyrix-ct 12/24V 120A intelligent combiner, it charges your auxiliary battery from the engine's alternator whenever the engine is running, then isolates the start battery when charging stops — so a deep auxiliary load never leaves you unable to start.
The Cyrix-ct combines and isolates automatically with no voltage drop (unlike a diode isolator) and uses intelligent trend detection to avoid false switching. It also includes a Start Assist function to manually parallel the banks for 30 seconds in an emergency.
- Cyrix-ct 12/24V 120A intelligent combiner (180A cranking) plus install hardware
- Adds an isolated 2nd or 3rd battery to an engine charging system
- Automatic combine/isolate with no voltage drop; auto-ranging 12/24V
Need a higher-current or lithium version? See the full Cyrix combiner range.
Blue Marine is an authorized Victron Energy dealer — ships brand-new with the full 5-year Victron warranty, free shipping, and local pickup available.
Warranty Information
Shipping & Returns
We offer free shipping over $49. Lithium batteries & oversize items may have an applicable shipping charge.
We know returns are no fun so we aim to make the return process as hassle free as possible! We have a 60-day return policy, which means you have 60 days after receiving your item to request a return.
Lithium batteries and products with lithium batteries inside are non returnable: Due to carrier regulations surrounding the shipment of lithium batteries (classified as a fully regulated hazardous material), we are unable to accept returns unless arranged locally. We appreciate your understanding and encourage you to contact us with any questions prior to purchase.
For more information on returns, visit our return policy page.
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