The brightest LED flashlight in the world is the Imalent MS32. It's a 200,000 lumen flashlight with cooling fans built-in to keep the temperature down. We also reviewed other high-lumen flashlights, including the  Acebeam X75, a 80,000-lumen flashlight, much lighter than its competitors. Check out all of our reviews.

The world's brightest flashlight is currently the Imalent MS32 which has a maximum output of 200,000 lumens that can reach up to 5,308 feet. This crazy bright flashlight also has a heat pipe cooling system that uses cooling fans for ensured safety.Flashlight Price Lumens Beam distance Imalent MS32$750Up to 200,000 lumens 5,308 feetImalent SR16$370Up to 55,000 lumens  5,627 feet Olight Marauder 2$269Up to 14,000 lumens 2,625 feetTrustFire DF50$109Up to 6,500 lumens 345 feet Fenix PD36R Pro$121Up to 2,800 lumens 1,242 feet *MSRP at the time of writ

It's the Nitecore EA81, which uses 8 AA batteries and produces 2150 lumens. Unfortunately, it's an older model, but still, the most powerful flashlight running on AA batteries.
Please note to use rechargeable NiMH batteries like Panasonic Eneloop and never alkaline batteries. Alkaline batteries are too weak for these types of high power LED flashlights.