The block diagram and functionality of the BMS of a Specialized battery is as follows:
10 cells groups in series, 4 cells in parallel in each group. Each cell group has a sense line going back to a monitoring IC, e.g a Panasonic AN49511A. The AN49511A is reporting all 10 cells voltages to the...
“Rosenberger - C003-03-2000-C Charging connector jack straight 25 amp”
is what you want to use to avoid cable elbow issues.
Beware to anyone else stepping outside the normal here, pinouts for the connector change over the years. Do not assume, do your own discovery.
Once I have everything...