First, there is air flow around the battery case when the car is moving. There is less space between the top of the 62 kWh battery and the underside of the passenger compartment than the smaller batteries have, but there is still enough space for some air flow. There is also air flow underneath and along the sides of the battery case (above the plastic splash shield) since air flowing through the radiator and HVAC coil flows to the rear of the car above the splash shield. Second, here are some LEAF Spy battery temperatures in degrees F from the longest duration DCQC so far on my 2019 SL Plus (temperatures are relatively low because it was in January): Before charging 70.7, 70.7, 70.2; after charging 96.4, 98.2, 99.6; after driving 47 miles at highway speeds 95.2, 97.0, 100.8; the next morning the temperatures were down to 77.5, 80.2, and 82.2. The thermal mass of the battery pack and positions of temperature sensors are probably the cause for two temperatures to drop slightly while the remaining temperature increased slightly during the 47-mile trip.lorenfb wrote: ↑Sun Jul 26, 2020 3:10 pmDefine "cool slightly". Then provide some actual data and describe how that can occur, given the lack of air flow, the battery's thermal mass,
and it's low thermal conductivity to ambient. Some need to just accept the fact that the present Leaf without TMS for highway travel is marginal,
and as sure is not comparable to either a Bolt or Tesla for long highway travel.