I will contribute with a flashlight meme themed limerick:

There once was a man without foresight

Who's wife did not approve his new flashlight

His Visa credit card

Lay out in the yard

But came four weeks later his new Hank light

Awesome, thanks!

Any chance you can measure the diameter of the driver?

60C = 140F...pretty toasty!

How hot does it get on top of ramp?

Why did you make me turn my computer monitor sideways? Oh dear God!

In all seriousness, I've been thinking about getting one of these, but I'm curious about how quickly it steps down due to thermal regulation. Most of the reviews I have seen show it dropping like a rock from outer space within about two or three minutes.

I wish they had these available couple of years ago; I moved all my self-assembled lights to 21700 Hosts because cheap buck and boost drivers were only available in 20mm and 22mm sizes.