VE. Smart Networking with Two Victron Smart Shunts and Two SBS’s

I have a question about VE. Smart Networking with Two Victron Smart Shunts and Two SBS’s

I built two identical 12v Lifepo4 batteries that I named Battery # 1 (“B1”) and Battery # 2 (“B2”).

Each battery has:
One Overkill BMS
One Victron Smart Shunt
One Smart Battery Sense (“SBS”)

I also have three Victron Smart MPPT’s in my trailer.

Each battery is set up with VE. Smart Networking.

In the past, I only installed B1 in my cargo trailer. B2 was built as a spare and was kept in the house.

I now want to parallel B1 and B2 together in the trailer.

I assume that I need to turn off VE. Smart Networking on one of the Shunts and one of the SBS’s so that only one Shunt and only one SBS reports data through the network to the MPPT’s.

Is my assumption correct?

I am hesitant to rely on the software to automatically ignore the duplicate devices.

The VE. Smart Networking manual says:
“If, by accident, two or more sensors (e.g. Smart Battery Sense and/or BMV) are connected to the same VE.Smart Networking, a priority mechanism is used to decide which battery temperature, battery voltage and battery current should be used by the charger. The priority mechanism is first based on the type of sensor (e.g. BMV has higher priority than the Smart Battery Sense), and second based on the serial number of the sensor. At the end, only one information will be used by the charger.”

Although the above paragraph from the manual does not expressly mention a “smart shunt”, I presume the paragraph also applies a to “smart shunt”.

I appreciate your feedback.

Your assumption is correct. Have only one shunt (for current/voltage) and one SBS (for temp) in the VE.smart network.

You'll need to arrange the one shunt in the network so that all current passes through it.

Halleluiah!

I got my two 12v 280Ah batteries paralleled, with both batteries reporting good data to my Rpi Venus.

Below is a photo of my home page, where data from Batt 1 Shunt and Batt 1 BMS are reported.


Below shows my devices (note both Shunts and both BMS's are shown). My two Smart Battery Senses are not connected to the Rpi, but they both show up in Victron Connect app.





Below is Batt 1 BMS data for each cell.


Below is Batt 2 BMS data for each cell.

I am pretty happy that I can now sit in my house (and in my truck while traveling) as I charge my battery(s) and periodically glance over at the cell balance data and voltage deltas, until the cells are in the upper knee area. Then I can go out into the trailer and, within a few minutes, top balance each battery, when necessary, utilizing a power supply and a light bulb. The balancing process goes really fast in the knee area.

I top balanced both batteries individually before I paralleled them. I hope they stay in balance!
With much thanks to the guys who coached me through this process, especially Sunshine who reminded me to pay attention to the shunt connections.

This forum is awesome!