With the advent of hot weather, the battery cooling cooling pump (?) seems to be making a lot of noise when the car is charging. Also, I am noticing a lot of heat coming from the battery area. It sounds and feels like there is an internal combustion engine idling when the car is charging. Is this normal hot weather behavior or something related to the recent charging software upgrade or an indication of a problem. The indicated battery range after an overnight charge has dropped slightly but nothing dramatic. However, I thought that range was supposed to improve in warm weather.


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