This topic was opened 5 years ago and except in very particular circumstances is not useful anymore so I wanted to close it but can’t find a way to do that on the forum.
On the subject of integrating Victron equipment with HA here is a short summary for those ending up here:
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Use the VRM API as explained in this thread
When? If your Victron installation is remote and it’s only connection to the “world” is via VRM -
Use MQTT as explained in many threads and specifically here
When? If you’re familiar with MQTT and envision the use of, for instance, Red-Node, for logic programming and automations -
Use modbusTCP either using DYI config or using the excellent HACS integration from @sfstar you can find here
When? If you’re familiar with modbus and like to keep it simple
After having used all 3 methods I am now and for the foreseeable future using modbus because I have other modbus integrations in my HA such as for instance swimming pool filters/clorinator, Fronius inverter, etc. which reduces the number of integration and keeps it simple. But this is a purely personal choice, feel free to test and try and break and share your experiences.
If you want Victron’s opinion please read this post by Matthys Vader on the subject. you can find the complete thread here