I apologize if this is a touchy subject. Alaskan nailed it, i was drawn to the forum from a google search....that’s exactly what happened lol. Well I guess you guys don’t find it lol, (lol). Ok im done. I do apologize tho and it does say about using an 18650 in that equation. He clearly states how there’s an adapter for an 18650 and goes on to say how that proves how much more the power output is limited. I was just making sure, thats all. The acebeam w30 is an amazing light, ive had it since it came out and to this day, it’s still amazing as the day I bought it. It never gets old. And 1 more thing before i go, the $329 price tag is fairly new, since about September/October 2020. Prior to that, the last time i ordered 2 (yes 2 more), was September 2019 right before they were discontinued and they were $250. Still pricey but everyone who has seen it in person, wanted one. The $250 price tag was not an issue whatsoever. And idk if acebeam actually makes the battery or not but the battery that comes w tbis light is branded acebeam. As far ad im concerned its an acebeam battery, saw about 12 of them. Im 42 from the Poconos in PA, so don’t cunfuse me with someone else making up a new name to start trouble. I was simply curious before you 2 chased me off. Good thing I saw the little notification thing as i was punching in my information to donate money, that would have been a waste. If membership is low, i can understand why. Have a good life! —John