Hello James,
right CAN connected batteries are giving exactly the informations mentioned in your reply.
With details I ment: Each cell voltage and each wire resistance (for the ballancer cables) plus wich cell is charged, which discharged by the ballancer and so on.
I used:
https://github.com/syssi/esphome-jk-bms
reading the information via ble while the batteries are connected via CAN to the Victron system.
This gives the following informations (out of the box, not yet with a nice representation)
This is everything for one battery.
I have four of them:-)
Have fun,
Marc