archimedes
Flashaholic
Yes, heat can accelerate fading of LED, although (as a practical matter) your flashlight may likely be obsolete long before this occurs.
This article is several years old, but explains in somewhat greater detail ...
https://www.digikey.com/en/articles...g-the-cause-of-fading-in-high-brightness-leds
This article is several years old, but explains in somewhat greater detail ...
https://www.digikey.com/en/articles...g-the-cause-of-fading-in-high-brightness-leds