Here is one of the brightest flashlights money can buy. The MALENT SR16 55000 Lumens Flashlight can illuminate objects up to 1715 meters away. It has a USB rechargeable battery and removable handle. This flashlight has 16 x CREE XHP50.3 HI LEDs. It lasts up to 98 hours on battery depending on mode.
These types of flashlights can get a bit hot as you run them for a long time. This model has a thermal control module that adjusts brightness output automatically. This flashlight is powered by 4 built-in 21700 Li-ion rechargeable batteries. It is IP56 rated.