Handheld l.e.d. lights do not maintain 3000+ lumens for any duration. They all dim down to a degree unless they have massive heat sinking (then they are no longer handheld). You can spread out the heat with more l.e.d.s and lose throw to get a floodlight in exchange for a spotlight (get the lumens but not the throw), or you can put a brick sized heat sink on a good l.e.d. and get 4,000+ lumens that may get you a mile of throw. Few, if any lights do this so they all dim down to save weight, bulk, and cost. H.I.D. spotlights are still basically in a league of their own. My Milwaukee 3000 lumen 18 volt floodlight will maintain 3000 lumens with a brick sized heat sink, but will burn through 10 18650s in 2.5 hours. That's a realistic size and power source for current l.e.d. technology, but has no throw.
Nitecore E4K 4400 lumen light dims down after 20-25 seconds. That is about standard for what you'll see of l.e.d. lights over 3000 lumens. Turbo that lasts seconds. A setting around 1,000-1,300 lumens that lasts maybe a few minutes, then a 300-500 lumen setting that the light has the heat sinking to maintain for the duration of the battery life. Don't be fooled into thinking any compact l.e.d. flashlight running on a single 21700 cell is going to hold brightness over 3,000 lumens for more than a minute, if that.