NEW READER Note: The comments in this thread don't matter as they either are irrelevant to this data, or the discussion led me to add, delete, or otherwise adjust my statements for accuracy.
The following tests were done on my Long Range RWD Model 3.
Time is in seconds, Temperatures are in Celsius. This was a short 3 mile drive, speeds up to 60mph. In the graph notable points are: R Stator temp plateau is me stopped in McD's drive-through. Temperature increases at the end was me initializing Battery Preconditioning(by routing to a supercharger). I would have let it go a while longer but turns out watching Netflix deactivated the routing which in turn deactivated preconditioning, and sorry but watching Netflix on my lunch break was more important then further data.
* Here are two graphs and one spreadsheet. https://imgur.com/a/p2rLlKS
First one is my first 6 minutes driving this morning, no HVAC, no Battery Preconditioning. Second is next 10 minutes not in motion, no HVAC, Battery preconditioning ON. I then turned on HVAC, turned off BP, and finished my drive to work(about 10 min of 45-50mph with stop lights, 15 min highway 60-75mph, 5 min <20mph). Temp data after I got to work is in the table in the 3rd pic. Speed in Graphs is in km/h here.
*Heater power vs Time https://imgur.com/a/rPYkW0a
This is heater + fan + misc power draw with HVAC set to Auto and HI for temp. This is just a first run. What I really want is to see it spin up and then drop back down when cabin reaches set temp.
*At 55F outside Temp, the maintenance draw from the cabin heater to maintain an 80F Auto set point is approximately 3kW
*Regen vs Time with speed data, 70-0mph. https://imgur.com/a/oIR8qTw
*Full vs Limited Regen 70-0mph. https://imgur.com/a/Z7R88ge
So this is a graph that overlays full regen 70-0mph and limited regen 60-0mph. By limited I mean the battery was at about 13C and my Regen bar was about half full of dots. Mental query: I wonder if supercharging speeds would be limited to what the maximum regen level is, on the Limited Regen line(~ 30kW)
*Hold mode vs Roll mode Regen graph. https://imgur.com/a/EIdPpnV
This is a preliminary test showing that the regen profile from ~70-0 is not different between the New HOLD mode and Roll modes. This is preliminary because I was right on the hairy edge of having full regen available. As soon as I let off the accelerator, I got some regen limitation dots. Both of these runs were back to back and completed in a total time of 66 seconds.
"Starting" your car from the Tesla app, when the nav has been set to go to a supercharger does NOT start battery preconditioning.
Misc random Single data points:
At 6C outside temp, 60-65mph for ~15min, Stator temp DROPS to 30C from 35C.