I bought one Acebeam X75 few days ago. This light is different from other flashlights in this class because it is designed by someone who knows physics. The light is made of three modules connected tighter: the light engine, with the 12 LED installed on an exposed heat block; the frame, with a removable handle; and the battery. The copper heatsink and the fan do handle the heat flow generated by the LEDs in a way no other flashlight does; it can generate 20 K Lumens for 20 minutes or 10K Lumens for one hour, with a totally flat curve, and limited exclusively by the battery capacity. The X75 do peak at 80K Lumens for few minutes. That peak of light is useful for brief inquiries and is truly impressive.
The X75 is not much bigger than a traditional 6 Volt lantern; I have a modern version of that old form factor, a Klarus RS10 lantern, which is slightly bigger than the X75 - but obviously it is much lighter.
I live in the UK, which - compared to the US - is a flashlight desert. I have no possibility at the moment to buy the eight cells battery, because none of the dealers have it available, and ACEBEAM is also out of stock. Maybe in the future, as I have no rush. Consider I encountered the same problem with the Fenix LR60R - for the time being, I can't get an additional battery for it. Nice thing about the ACEBEAM X75 - is that it charges from empty in one hour, with my 100 Watt Shargeek and Zendure power banks. Additionally, it can operate while charging.
I find the X75 to be outstanding. It complements my set of other light when out in the dark. I didn't buy it for a specific purpose, I acquired it because I'm a flashaholic and the X75 is designed scientifically, and not just for market profits.
Greetings to all,
Anthony