@flashlight I may have overheated my brass TS10. The battery wrap shrank.
I used it continuously in candle mode @ high with the original silicone diffuser for a video shoot, and found the battery looking like that, opening the light right after stepdown (and almost burning my fingers).
Im appreciating learning from your experience Thanks for sharing info
I respect that youre taking precautions. I think your idea to use water cooling could work well ;-)