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The BMS (Battery Mangement System) will stop the the charge when the highest voltage cell reaches the peak voltage (3.7 volts). This is for any modern multi cell pack, and Tesla is not excluded.


Then, a series of shunts will discharge all the highest cells to match the lowest cells; in your case, this took 2 hours 15 minutes. Then it topped off the now "balanced" cells until 7:07am.


If you wanted a 7am departure, it seems very well done.


This, of course, does not correspond to the 15 minutes that the climate control would run, and suggesting TMS (Thermal Managment System) that just coincidently happens 1-6 hours after the initial charge completes and no other time doesn't seem plausible.


My car had a 4+45 balance yesterday, after running the battery all the way to "LO" on the GOM. The deeper the discharge, the higher likelihood that a longer time will be required to balance the cells.


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