The functionality of the Cyrix-Li-ct is analogous to the Cyrix-ct.

The Cyrix-Li-ct will parallel connect a lead acid starter battery and a LiFePO4 battery:

• If the charge disconnect output of the VE.Bus BMS is high, and
• If it senses 13.4 V (resp. 26.8 V) or more on one of its power terminals.

The Cyrix will disengage immediately:

• When its control output becomes free floating, signalling cell over voltage or cell over temperature, and/or
• When battery voltage drops below 13.2 V.

Start assist function: a short positive pulse will close the relay during 30 seconds

A built-in transient voltage suppressor will limit the voltage spike that may occur when the Cyrix suddenly disengages due to cell overvoltage or over temperature.