Kia e-Niro MY20 64 kWh - Gravity Blue
Sorry to say that is not the case. The battery heater does not come on while driving and even if it did the heafing process would waste more energy than what you'd gain from the reduced resistance in the battery. Moreover, the heater comes on (only while DC charging) at temps below -10.The FE, if I remember correctly, did not have a battery heater, whereas the 4 and 4+ definitely do. That should also help to minimise the range loss in the dead of winter.