RS485 firmware update on EG4 LL V2 batteries to communicate with EG4 PowerPro batteries

[muaddib721]

I’m about to update the firmware on my LL V2 batteries so they can communicate with the PowerPro batteries and I have a question. I’m following the instructions in the video from SS labeled EG4 PowerPro ESS EG4 18Kpv install and commissioning and they are connecting the RS485 cable to the CAN port (I know that the CAN is a RS485 port) and my question is on my LL batteries there is the CAN port and the RS485 port. Do I update both or which one if not both?

 

[Samsonite801]

There is only one firmware to update on the main BMS board, I'd try whichever port allows the firmware update utility to successfully communicate and write the firmware, as the other port will likely not work (as the cable only talks RS485 likely). Probably would be the RS485 port that would work.

Once the tool says successfully updated firmware, then it would be all that is needed. Can check the installed version to confirm it completed.

 

[muaddib721]

UPDATE the answer is just use the RS485. Thanks to Markus & Jarrett at EG4 for the quick replies