Oem battery management system chevy volt teardown the battery pack this video has some great slides showing locations of components and how cells are grouped into packs and then grouped into modules and then detailed info on the bms alternate recording may have better audio. I have opel ampera 2013 90000km chevrolet volt ssue with battery or battery management system wheen charging battery to full 1 everyting is ok until around 80 soc u approx 15 hour to complete charging 2 around 80 soc u electric current drop under 1kw 16a charging station 3. This video animation shows how the configuration and operation of the chevy volts lithium ion battery pack