Batteries and engines are similar. You run an engine too hot and it damages it just like batteries. Best is to have temp sensors inside your pack to watch the temp of the pack. My vruzend pack did get to 60°c only hot hot days and on full power. In cruise it was about 25°c. With the vruzend pack there is an air gap between each cell which helps keep the air flowing through and allows heat to dissipate better then having the cells closely packed together. I think if I had some active air cooling blowing on the pack I wouldn’t see this high temp. Will see if my rebuild of the pack by adding more bus bars and thicker gauge wire helps reduce heat on hot days.
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