And that’s what ‘medium’ output is for: reasonable output for a long duration.
‘High’ is for bright but wincingly inefficient operation, when you need a lot of light for a while, but you’re quick about it because you know the battery won’t last terribly long.
‘Turbo’ is for those 10 or 20 seconds where you need a photon cannon, battery drain be damned.
It’s better to have it and not need it than need it and not have it, even if it comes set conservatively by default and you need to fiddle with Anduril’s settings to unlock it.
I think I’d use thermal regulation for turbo with 14500 operation (because the cell can handle the current output, probably), and timer based regulation for NiMHs (because the cell can’t handle the current for long at all).