Originally Posted by
mtb_addict
It must be normal for Lithium battery. Even $100k electric Tesla car batteries struggle in cold. Nytimes guy got stranded because the range in winter was much much less than advertised.
Lead acid car batteries have the same issues, and I'd imagine that car battery shops are busy this time of year, and go into hibernation in July.
The electric cars are supposed to regulate their battery temperatures (heat or cool as needed). It might help if they are on a float charge at night so they can have power heating.
My guess is the Tesla range was shortened because the guy was using electric resistance heating in the car (and perhaps for the batteries).
Ideally, though, a car will also recover heat from the motor for use.