I just charged my 60kWh S from ~23% to 100% while recording the CAN bus messages off bus #3 (which has power train and battery information). What might be interesting to look at? Everything is tagged with a 1ms resolution time stamp (just the one you get from the Arduino millis() function that starts at 0 at power on). So far I've poked around looking at the state of charge and the voltage of the individual groups of cells, but as there are 24 of the latter, plotting the data gets to be quite messy.