Followup with warmup time (before regen kicks in) on flats = ~30 miles going 60mph, after a not very cold night. And 16 miles climbing 2700 ft at 40mph after a colder night. Takes a good while!
Seems odd not to have reciprocity here, i.e. you can extract maximum power when batt is cold yet you cannot charge batt when it is cold. It was as if charging creates cooling (can't be true) & discharge creates heat (true).
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