I have a question, I am trying to get the temperature information from my multiplus to my chargers, so that the lithium battery is not damaged when the temperatures are below zero.
However I saw that this can be done via DVCC, but I also read that you are only allowed to turn this on when you have a lithium battery that can be connected to the GX aswell. Could I also turn DVCC on with my third party lithium battery that does not talk to my system?
Yes I read that it can be used with lead acid batteries. But it does not tell anything in the case you have a lithium ion battery with an internal BMS system, how can I share the temperature sensor from my multiplus throughout the system and should I use DVCC on or off?
Nothing prevents anyone from using DVCC, there are recommendations where it works best, but it is designed to coordinate chargers and share sensor data.
It is fine to enable it to have a shared temp sensor but you would typically add an external sensor to the GX and then configure this as the STS source.
Once enabled you can configure additional limits for charging as any connected/supported charger will be controlled, though in your case, not by the battery.