It's hard to see without actually testing it. But there are a few things to keep in mind: 1. If you want to reach 100,000 lumens in a production flashlight, you need many LEDs. So if you see a flashlight with only 1 LED.... walk away. 2. It needs lots of power to reach this output, and if it has 1, 2 or even 4 batteries, it will never ever reach that high. It needs at least 8 high-current batteries to reach that output for even a few seconds. 3. The cost of building such a powerhouse will be very high. Just the battery pack alone would cost at least $100 for parts alone. The MS18 (currently the only 1 reaching exactly 100K lumen is already more than $600.