The eg4 LL V2 batteries have a BMS CAN port that is a modified pinout RJ45 port. They also appear to be able to set the type of device they are talking to (victron, growatt, ...), using the lcd screen. (I do not have said battery yet, but am considering getting one).
There are various posts out there that show you can connect the eg4 bms to a CerboGX (Victron) using a special cable from signature solar (maybe resold from Victron). Notably here:
The connection from the Cerbo to the BMS obviates the need for the battery shunt, as you are getting the data from the BMS directly.
Here are my questions:
1. What are the pinouts settings on the eg4 BMS CAN port?
2. What does changing the device type you are talking to on the eg4 actually do? Does it change the pinouts? Data format, etc?
Why do I ask?
Instead of a Cerbo, I want to use a raspberry pi. I already have a pi4 with victron's VenusOS.
This device:
will give me CAN capability.
And this or similar:
will allow me to adapt the pinouts to whatever I need (and go from db9 to RJ45).
This link from Victron shows that there are two pinout settings (A,B):
So which of these does the eg4 LL battery use? Or does it use it's own special pinouts?
I may have to make changes in VenusOS as well, but if this can't be done hardware wise, there is no use trying this and then go back to using a shunt on the battery.
Thanks for any info.
-Chris
There are various posts out there that show you can connect the eg4 bms to a CerboGX (Victron) using a special cable from signature solar (maybe resold from Victron). Notably here:
The connection from the Cerbo to the BMS obviates the need for the battery shunt, as you are getting the data from the BMS directly.
Here are my questions:
1. What are the pinouts settings on the eg4 BMS CAN port?
2. What does changing the device type you are talking to on the eg4 actually do? Does it change the pinouts? Data format, etc?
Why do I ask?
Instead of a Cerbo, I want to use a raspberry pi. I already have a pi4 with victron's VenusOS.
This device:
will give me CAN capability.
And this or similar:
will allow me to adapt the pinouts to whatever I need (and go from db9 to RJ45).
This link from Victron shows that there are two pinout settings (A,B):
VE.Can to CAN-bus BMS cables manual [Victron Energy]
www.victronenergy.com
So which of these does the eg4 LL battery use? Or does it use it's own special pinouts?
I may have to make changes in VenusOS as well, but if this can't be done hardware wise, there is no use trying this and then go back to using a shunt on the battery.
Thanks for any info.
-Chris