Based upon my (and others) experience in Arizona, the 2015 battery does significantly better in the heat than the earlier ones. The 62 kWh battery in my 2019 is doing better than the 2015 after almost a year and almost 20k miles. Your approach to keep the charge level below 80% is good since you have limited mileage needs. Use the charge timers or just unplug by depressing the latch handle on the J1772 connector--you will not hurt the battery, onboard charger, or EVSE. It might be good to discharge deeply and charge to full once in a while (maybe once every 4 to 6 months) to allow the LBC (lithium battery controller also referred to as BMS for battery management system) to balance the cells and update its estimates of battery health. To put your temperatures in perspective, the official average temperature at the airport in Phoenix was 99.0 degrees F for the month of July. We have already set records for the most days in a year that the low temperature at night did not drop below 90 F. The high last Thursday was 118 F.rasgaroo wrote: ↑Fri Aug 07, 2020 5:46 pmIt's not as hot as in Singapore, but close. At night the temperature goes down to around 75 - 80 degrees. In the midday, it's around 82 - 86 degrees. I have never seen a leaf here that is lower or higher than 6 bars.
For some reason, probably because of the wolf and lizard battery packs, 2014 and 2015 leafs do much better around where I live. I have never seen a 2013 leaf around here that has higher than 5 battery bars these days. Almost all 2014/2015 cars still have around 8 - 11 bars.