Hi Michail. I'm studying the charger and BMS of the Shimano-Focus-Derby system based on the Steps E-8000. I have CAN BUS captures and a decent lab. I am trying to understand what does each of the nodes in he CAN BUS talk to each other. I was wondering if this is something you have already discovered, and if you want to cooperate. Thank you. Roberto. www.rbarrios.com