I just installed a second BMZ battery to my Victron system. Should I be able to see that the system has 2 batteries somewhere in VRM? Thank you...
asked
Should i see 2 batteries in VRM?
Hi @pbilka,
I am presuming that you have connected both batteries to the same CANbus on the same GX device. So the 2 batteries are now effectively 1 battery from the systems perspective (they share a single combined state of charge for example).
One place where you can see a difference would be in the Charge Current Limits, and Discharge Current Limits.
This is shown in the Advanced section of VRM, under the battery widgets.
Thank you so much for your answer.
I can understand the 2 batteries becoming like one when connected in parallel to a dumb system, but these are BMZ batteries for $4000 a piece, so I was expecting a little more intelligence, like for example showing 2 "CAN bus BMS batteries" on the device list, each one with its own parameters. The way it is set up, some of the parameters shown are ambiguous, where we have one value for 2 batteries. For example, in case of temperature, does the value represent average temperature of the 2 batteries, or is it the master temperature?
p.s. I am suspecting the installer did not configure the original battery as "master". I saw they had it on "single" setting when they were using the Service Tool. The second battery is configured as "slave". I think this would pretty much make it invisible on the bus...
I was very impressed with the VRM until I added a second battery in parallel, with also communication links between batteries linked to the Victron . The VRM now displays battery charge currents ambiguously ! Do I need to analyse the can-data to search for a solution or did someone since 2020 found a solution? Many thanks for your attention !
