The only 18650 headlamps that I know of, Hank and Firefly, both require flat tops. Other "enthusiast" headlamps like Skilhunt and Zebralight also require them, though that matters less to me since they're non-Anduril anyway.

Anyone know what the deal with this is? Is it just lumenitis? It also occurs to me to call that "lumen bloat", similar to Javascript bloat. I'm an experienced enough user to not care about that any more. I'd rather have fewer lumens and keep the ability to swap 18650's (including button cells) between my various lights and other devices. For a headlamp I prefer a floody beam since if I want to check out something in the distance, I can pull a handheld thrower from my pocket.

Interchangeable battery tubes (18350/18650) would also be a plus.

Thanks.