Never actually measured the temperature, but I'd like to know if it's been determined how hot its too hot for these particular components.
Perhaps more experienced users (people with DIY experience, more familiar with the actual internal electronics) can give a bit of insight.
I know different components can run at various temperatures (for example, cheaper devices might get damaged at 60ºC (140) while the CPU in my laptop has a Max. operating temperature of 100ºC (212F) before automatic shutdown to prevent damage)
Also, I just recently started researching about heat in Lipo's, but what I read in a few sites was "If you can't hold the battery in your hand, its too hot!". Which is absolutely subjective, and doesn't help too much.
A weird question that comes to my mind is: Obviously a hotter environment will make the aircraft run hotter just for being exposed to it, but, Does flying on hotter, less dense air, means the motors have to work harder to produce lift, drawing more energy, reducing battery life and increasing heat produced by the battery?