Cyrix-Li-load 12 / 24V-120A

The Cyrix-Li-Load is an advanced device designed to protect LiFePO4 batteries from over-discharge. It reliably disconnects the load when the battery voltage drops below a safe level, preventing damage to the battery. The device works in conjunction with a VE.Bus BMS or smallBM power management system, ensuring the battery is always in optimal condition.
Automatic reconnection
The Cyrix-Li-Load responds to changing battery voltage. If the battery voltage increases after the load is disconnected, the device will automatically attempt to reconnect after 30 seconds. However, if three attempts fail, the Cyrix will remain off until the voltage reaches a safe level (above 13V) for at least 30 seconds, indicating that the battery is being recharged.
Application in DC systems
The Cyrix-Li-Load 12/24-120 is the ideal solution for protecting 12V or 24V batteries with a current of up to 120A. The device is designed for use in DC systems such as campers, emergency power systems, and photovoltaic systems. Alternatively, you can also use BatteryProtect, which is characterized by exceptionally low current consumption.

Multi-level protection for LiFePO4 batteries

• First line of defense: LiFePO4 battery with built-in cell balancing function to prevent overvoltage, undervoltage and overheating.


• Second line of defense: VE.Bus BMS system that monitors cell voltage and temperature and shuts down charging or the load when it detects a threat.


• Third line of defense: Cyrix-Li-Load disconnects the load when the voltage drops below a safe level and automatically attempts to reconnect it.

Key Features of the Cyrix-Li-Load 12/24-120

• Automatic disconnection and reconnection: Protects the battery against over-discharge and prevents damage.


• Control via VE.Bus BMS or smallBM: Seamless integration with your energy management system.


• Minimal power consumption: Consumption less than 4 mA in open state.


• Compact dimensions: Ideal for installation in confined spaces, it takes up only 46 x 46 x 80 mm.


• IP54 protection: Dust and water protection for reliable operation in harsh environments.

Technical specifications

• Continuous current: 120 A


• Control: Control input activates Cyrix when battery voltage is adequate.


• Power consumption: <4 mA in open state


• Protection category: IP54


• Libra: 0.11 kg


• Dimensions: 46 x 46 x 80 mm