230A 12V-24V Cyrix-Li-CT battery combiner - Victron Energy

LiFePO4 Battery: it prevents undervoltage, overvoltage and overheating of the cells
The first line of protection is cell balancing. All Victron LiFePO4 batteries include cell balancing.
The second line of protection consists of:

• turning off the load in case of imminent undervoltage on the cells, and
• stopping and reducing the charging current in case of imminent overvoltage on the cells, high (>50°C) or low (<0°C) temperature.

The VE.Bus BMS is the heart of the second line of protection.
However, not all loads or chargers can be controlled directly by the VE.Bus BMS
In order to turn off these loads or chargers, several Cyrix switches controllable by the VE.bus BMS are available

Cyrix-Li-ct

The functionality of the Cyrix-Li-ct is similar to that of the Cyrix-ct.
The Cyrix-Li-ct will connect a lead-acid starter battery and a LiFePO4 battery in parallel:

• if the load disconnect output of the VE.Bus BMS is high, and
• if it measures 13.4 V (26.8 V resp.) or more on either of its terminals.

The Cyrix will immediately deactivate:

• when its control output becomes floating, indicating overvoltage or overheating of the cells, and/or
• if the battery voltage drops below 13.2 V.

StartAssist function: a short positive pulse will close the relay for 30 seconds

A built-in transient voltage suppressor will limit voltage spikes that may occur when the Cyrix suddenly deactivates due to overvoltage or overheating of the cells.

LED status indication

• LED on: active = relay closed
• LED off, blinking every 10s: inactive = relay open

Only compatible with a system equipped with a Ve Bus BMS or a MiniBMS. For a lithium battery from a brand other than Victron Energy, use the classic Cyrix CT.

• LED blinking every 2s: relay open; will close

⚠️Only compatible with a system equipped with a Ve Bus BMS or a MiniBMS. For a lithium battery from a brand other than Victron Energy, use the classic Cyrix CT.⚠️