The Cyrix-Li-Charge will connect a battery charger with 3 seconds delay: – if the Charge Disconnect output of the VE.Bus BMS is high, and – if it senses 13,7V (resp. 27,4V or 54,8V) or more on its battery charger connection terminal, and – if it senses 2V or more on its battery terminal (the Cyrix will remain open, if not connect to the battery). The Cyrix-Li-Charge will disengage immediately whenever its control input becomes free floating, signalling cell over voltage or cell over temperature. In general a cell over voltage alarm will reset shortly after charging has been stopped. The Cyrix will then reconnect the charger after a delay of 3 seconds. After two attempts to reengage with 3 seconds delay, the delay increases to 10 minutes. Whenever battery voltage is less than 13,5V (resp. 27V or 54V), the Cyrix will disengage with a delay of 1 hour. Note 1: In case of zero discharge current, or a small discharge current, the Cyrix will not disengage shortly after the charger has been switched off and/or disconnected, because battery voltage will remain higher than 13,5V. Note 2: If, after the Cyrix has disengaged, the output of the battery charger immediately increases to 13,7V or more, the Cyrix will re-engage, with 3 seconds delay
A question we get asked many times. So we've created a simple calculator to give you some idea of how long your battery will last off grid. It will take into consideration any solar panels you've installed, 12v and 240v usage. Based on the information provided it will recommend a battery size and estimate the number of days use.
