---
product_id: 186361355
title: "– Cyrix-ct 12/24-Volt 120 amp Intelligent Battery Combiner"
brand: "victron energy"
price: "₨35021"
currency: LKR
in_stock: true
reviews_count: 8
category: "Victron Energy"
url: https://www.desertcart.lk/products/186361355-cyrix-ct-12-24-volt-120-amp-intelligent-battery-combiner
store_origin: LK
region: Sri Lanka
---

# 120A high current rating 12/24V dual voltage compatibility Overheat protection with auto disengage – Cyrix-ct 12/24-Volt 120 amp Intelligent Battery Combiner

**Brand:** victron energy
**Price:** ₨35021
**Availability:** ✅ In Stock

## Summary

> ⚡ Stay powered, stay ahead — the intelligent battery combiner for pros who never stop.

## Quick Answers

- **What is this?** – Cyrix-ct 12/24-Volt 120 amp Intelligent Battery Combiner by victron energy
- **How much does it cost?** ₨35021 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/186361355-cyrix-ct-12-24-volt-120-amp-intelligent-battery-combiner)

## Best For

- victron energy enthusiasts

## Why This Product

- Trusted victron energy brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Thermal Safety:** Auto-disengages on overheating to protect your system
- • **Compact & Lightweight Design:** Only 110g chassis mount unit fits discreetly in any setup
- • **Robust Copper Alloy Contacts:** Durable, high-conductivity contacts ensure reliable performance
- • **Universal Voltage Flexibility:** Works flawlessly with both 12V and 24V battery setups
- • **Seamless Emergency Power Boost:** Manual or automatic parallel battery connection for instant start assist

## Overview

The Victron Energy Cyrix-ct is a 120 amp intelligent battery combiner designed for 12V and 24V systems. It automatically or manually connects batteries in parallel to provide emergency start assist, features overheat protection with automatic disengagement, and uses durable copper alloy contacts. Compact and lightweight, it’s ideal for motorhomes, automotive, and marine applications requiring reliable dual battery management.

## Description

Victron Energy Cyrix-ct 12/24-Volt 120 amp Intelligent Battery Combiner : desertcart.co.uk: Electronics & Photo

Review: Good spec. - Not fitted yet. Was bought because the specs seem to be better than a VSR & has the combiner function if start battery if flat.
Review: AGM battery combiner - Great piece of kit for trickle charging two agm batteries with different amp hour capacities

## Features

- Parallel connection in case of emergency (Start Assist): The Cyrix can also be engaged with a push button (Cyrix remains engaged during 30 seconds) or a switch to connect batteries in parallel manually. This is especially useful in case of emergency when the starter battery is discharged or damaged
- Protection against overheating (due to a long duration overload): The Cyrix will disengage in case of excessive contact temperature, and reengage again after it has cooled down

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B071Y7C9MM |
| Best Sellers Rank | 14,606 in Automotive ( See Top 100 in Automotive ) 258 in Motorhome Parts & Accessories |
| Brand | Victron Energy |
| Coil Voltage | 24 Volts |
| Connector Type | Screw |
| Connector type | Screw |
| Contact Current Rating | 120 Amps |
| Contact Material | Copper Alloy |
| Contact Type | Normally Closed |
| Contact material | Copper Alloy |
| Contact type | Normally Closed |
| Country Of Origin | Malaysia |
| Current Rating | 120 Amps |
| Current rating | 120 Amps |
| Customer Reviews | 4.5 out of 5 stars 1,896 Reviews |
| Global Trade Identification Number | 08719076022145, 08719076034339 |
| Included Components | Victron Energy Cyrix-Li-ct 12/24V Li-ion Battery Combiner |
| Item Weight | 110 Grams |
| Manufacturer | VICTRON ENERGY |
| Minimum Switching Voltage | 12 Volts (DC) |
| Mounting Type | Chassis Mount |
| Mounting type | Chassis Mount |
| Number of Terminals | 2 |
| Operation Mode | Automatic |
| Product Warranty | Other |
| UPC | 616913923864 619639706902 |

## Product Details

- **Connector type:** Screw
- **Contact material:** Copper Alloy
- **Contact type:** Normally Closed
- **Current rating:** 120 Amps
- **Mounting type:** Chassis Mount

## Images

![– Cyrix-ct 12/24-Volt 120 amp Intelligent Battery Combiner - Image 1](https://m.media-amazon.com/images/I/81aZXmKBsHL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Does this need to be sized to match the maximum amperage of the alternator?**
A: It needs to be sized to the potential constant current flow, so that usually means the battery charger or alternator. If the destination battery is small, that would limit the current. For example, a 100AH lead/acid battery would only accept 15-45 amps, depending on type, no matter how large the alternator. It can handle up to 180A for 5 seconds when needed for starting an engine.

**Q: Can this be wired with an LED light to show when relay is on?**
A: No, not easily anyway. Another answer mentions Post #85, but that just manually combines the battery systems when a battery(+) is applied to it. I don’t think this could be used for an led ON signal. Post #86 is the ground reference for the combiner. I don’t think you want to add resistance (resistor, diode, or led) to that path to battery(-) because it will alter the voltage read by the combiner. The combiner needs the actual voltage for delayed relay intervals. 

One solution is to compare the two battery system (+) posts (87, 30). When they are exactly the same, the combiner is ON (or very coincidently equal). You might be able to use that as a signal for an led ON relay but ???

Here is the wiring diagram for this combiner (I think the other answer shows the lithium version)
https://www.victronenergy.com/upload/documents/Manual-Cyrix-ct-120-EN-NL-DE-FR-ES.pdf

**Q: Can you use this for a secondary battery on a Honda Accord hybrid one that doesn't have an alternator?**
A: Your question is in regards to whether your hybrid power system will trigger the relay when the car is engaged. It is likely possible that it will, but it honestly depends on the voltage curve of the cars high voltage dc-dc converter (144v to 12v)

**Q: could this be used to combine two 12v power sources to one output without feeding back from one to the other? solar bank + alternator for reduced load**
A: The main function of this unit is to protect two battery sources from discharge when no charging sources are present.  Protects starting battery from discharge when there is no charger or alternator (engine) running and there are loads on the 'house' battery.  These are controlled by the voltage present in either bank. Once voltage is high enough it turns on and allows the charging source to charge both banks.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good spec.
*by D***D on 29 July 2024*

Not fitted yet. Was bought because the specs seem to be better than a VSR & has the combiner function if start battery if flat.

### ⭐⭐⭐⭐⭐ AGM battery combiner
*by B***N on 20 January 2026*

Great piece of kit for trickle charging two agm batteries with different amp hour capacities

### ⭐⭐⭐⭐⭐ 2 Years and still going strong.
*by W***N on 10 May 2025*

Been using this for 2 years now and it's brillant. Had no issues whatsoever. Easy to install and has been reliable where as my previous device i would have some issues and cost the same. All my devices are victron on my campervan solar system as victron is reliable, costs more but hey you get what you pay for.

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-02-27*