Richard. The new 2015
Richard. The new 2015 batteries are suppose to last longer in the heat. No improvement in COLD climate. The newer models were suppose have heat pumps which reduce electric consumption for heating when the outside air temp is above 28F otherwise the heat switched to electric resistance heating. Poor range is expected when the weather is cold. The newer cars should a small heater in the battery to improve cold weather range. BTW our 2011 has no battery heater and we get 30 miles in winter if we keep the heat turned OFF. Cant wait for the 2016 VOLT to get here.