Let’s do some math… 15,000 lumens would require more than 150 watts. Divided by 4 batteries gives over 40 watts per battery (with driver losses). Batteries at 4V would be over 10 amps per battery. Yeah, like that’s gonna happen.
hehe, reminds me of a guy who cooked breakfast over a campfire in an aluminum frying pan. The pan go so hot it melted without warning (aluminum doesn’t glow red before it melts). I don’t think I laughed quite as hard, before or since.
I agree pyro, even the AK90 is going to be a three minute turbo at 100W or so. It takes a lot of surface area to dissipate that much heat passively.
Hey there BLF peeps. I just created an account because I happened upon this thread while researching the light you all are talking about. I ordered the UltraFire 15T6 (along with 4 other beasts) from lightmalls 2 days ago. I wanted to let you all know that I’ll post a review when I receive it.
By the way, clearly I love torches (well I’m here, ha), but frankly I’ve never modded a light or soldered an LED. I’m just learning & plan on upgrading some lights & playing around with the ones on the way.
Welcome to the forum and congratulations on getting what we all hope to be a great 15x XM-L light. I’m sure we all can’t wait to hear your impressions of this big beast. Please keep us posted.
I bet the “North Texas” will be a no-fly zone untill after you have finished your tests. :bigsmile: And if you want to just keep some of them and discard the others, there will be people considering those treasures. :heart_eyes:
This seems cool, but not too useful for reasons some of you already pointed out.
Another reason is that the human eyes perception of light is logarithmic analog. It is not linear, in other words. So you double the lumens, diminish batts life, but get only a slight brightness increase in perception.
To date, I think the 7 LED flashlight is the most useful, striking a good balance of perceived lumen and battery life.
Even if you are right (did not check), you are comparing the light at the same distance and area. If you get more throw and wider flood with the extra light then it is good for something. If you do not need see that farther, use the med or low mode to get more battery time. My 2 cents.
Well, what I notice between my J18 and 12xT6 on hikes is a perception that the “entire forest” around me is lit up, wider flood + brighter. Yeah, it cant keep it up too long, but its significant. 15xT6 should be even more significant! Sometimes I do like going with just a J18 though, because of the longer runtime and more level output over time. I’m tending towards running the lights on lower settings, but interestingly enough, the 12Tx6 is still preferrable, just by the fact of the bigger flood zone. I switch all the time between J18/12xT6 and on short hikes I alternate in SRK/Kung/C8 along with the big ones, all my lights are fun, depends on the mood, distance, other people with me and location