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Installed on an RV with solar system on coach batteries. Batteries wire as shown in photo. My Cyrix-ct was connected last evening. The coach battery was 13.6V, the vehicle's was 12.3. The Cyrix flashed and then engaged. The next morning both batteries settled at 12.83V and Cyrix remaind engaged. This afternoon (solar charge) both batteries are at 14.6V, Cyrix remains engaged. When should I expect to see the unit dis-engage? Do I have Battery 1 and 2 wired correctly.
Here's the photo again. My question is Battery 2 connection the terminal closest to the wall or the furthest?
Did you ever work out which battery should connect to which terminal?
It doesn't matter where you connected which battery at the normal Cyrix-ct.
The Cyrix-li-ct is labeled with "lithium battery" and "starter battery".
What kind of batteries do you have?
The cyrix-ct starts to disengage at 12.8V but not immediately, there is a delay depending on how fast the voltage is falling. At exactly 12.8V it can take hours.
If you disconnect one battery you still have the voltage of the other battery on both sides of the cyrix (because it's closed), you have to disconnect the (-) to open the cyrix.
If you look at the manual there is this table. If the voltage is below 12.8v for more than 3 mins it will close/disconnect.
There is also some good information in this thread.
https://community.victronenergy.com/questions/42660/how-does-cyrix-li-ct-work.html
Thanks Matthias. So the Cyrix-ct should have disengaged if both battey banks were at 14.6 volts, correct?
No, why should it disengage at 14.6V?
It will disengage if the voltage drops below 12.8V for the time mentioned above.
the cyrix ct works perfectly with agms. however they are lead-acid batteries. As soon as he starts using the agm, the voltage will drop to 12.8v pretty quickly. And the cyrix will open. It is possible that it will initially close again if we shut down a load. but it will reopen. Nothing bad happens. And nothing bad happens even if we charge the starter battery every day. Lead-acid batteries like to stay charged continuously. Solution is a switch on the negative 86 of the cyrix. so we can manually exclude it if we want. The manual does not provide this. I do not know why.
