What's the practical use of Turbo or Burst mode that doesn't even last 30 seconds?
Several practical uses.
1. I classify flashlights. I classify flashlights that I have (40) and I classify flashlights that I do not have. (510,204.08)
I classify them by weight, head diameter, throw, etc. Sometimes, I even classify flashlights by lumens. I do not classify flashlights by lowest lumens spec, or by middle mode lumens. For some reason, I don't know why, maybe genetic enzyme deficiency, when I classify flashlights by lumens spec, I choose to classify by maximum lumen spec. To Sum: when I classify flashlights by lumens output, I rank them based on each flashlights' maximum lumen output. Call me silly.
2. Lots of times, I want to illuminate the largest reasonable area for just a very brief amount of time, with the most lumen output possible, from the smallest size flashlight possible, just to simply quickly identify small target points of interest that are located in a wide area. Once I have done that, in just one or a few seconds, I throttle back to normal power output mode, and then I attend to the quickly acquired small point target that I was able to quickly identify in a large area from a small flashlight by brief use of maximum power mode, so as to get the most amount of light on a wide and/or long field, with plenty of lux per unit area.
3. Sometimes, I feel depressed about my spirit having been cast down to the hostile surface of this one-star planet, without my asking God first, and without God asking me first. I have found that a brief burst of maximum light from what is currently the smallest size flashlight per power makes it all ok/fine for a while, until the next time I feel the need to repeat.
4. When I buy yet another flashlight for its' max power, I always make sure that it also has normal modes for normal flashlight use. I certainly wouldn't want a pocket rocket or shoulder fired flashlight that only has maximum mode. That would be silly.