rogersleaf said:
Tomorrow (Friday) it's expected to be in the high 90's in Ohio during my afternoon commute. Plan to watch Leafspy on my 40KWh during the return commute which is about 40 miles of continous expressway. Based on previous observations on 91-92* degree days, likely see 110 F battery temps with air temps in the high 90's. The thing I noticed is the pack does not shed heat after it's run hard. Pull a hill at 65-70 or aggressively pass a truck, it gets hot and stays there several hours. That can't be healthy. I'm too chicken to DCFC at those temps so won't see the spike like the graphic chart.
Not surprising... even if I leave my 24 kWh Leaf outside at night for many hours, it will only cool by a few degrees F (say 3 to 5 F) if outside air temp is much cooler than battery temp (e.g. OAT at 60 F or lower and batter temps at say 75 F).
I accidentally left my Leaf out last night and battery temps went from about 74 F at past midnight to about 64 or 65 F at ~8:15 am. IIRC, OATs got no lower than mid to high 50's.