Ugh. I put a fresh charged Aspire 18350 in and tested it on Turbo and it makes 3812.25 lumens. I don’t know what happened with the previous Efest cell, charging it up to test again. This is more in line with what I expected to see from these. A little less than the XP-L2 but not by much. 45 lumens at this rate.
Whew!
So now I have to do more testing to find out what happened, why the discrepancy. Hate it when that happens! LOL
Edit: That Efest cell must have gotten dirty, the MiBoxer C4-12 was showing high internal resistance so I cleaned it, got the internal resistance showing 54mOhms and now it makes a whopping 4067 lumens ! Ok, So these Samsung emitters are pretty much over the top!
And that’s probably a good thing Stereodude, it lets you hold onto it. You should be seeing right around 3000 lumens at start up when that VTC6 is fresh.
Should you decide to swap the 22ga stock wires for heavier ones, bypass the driver spring and replace the tail spring with a copper button it may not remain the case…
Edit: Probably should note that the 20 seconds was with the light in my light box, surrounded by the foam that centers the light on the glass shelf. No air circulation at all. And of course, with the Samsung LH351D emitters at some 30% more output than stock with Nichia’s… (also, in the copper head of the Titanium D4)
Hi guys , i just joined this forum yesterday . i asked toykeeper some questions yesterday regarding the emisar d4 as im planning to get a few to use for work and edc . toykeeper directed me here . thought i would ask everyone here about it . i do apologize in advance if some of my questions seem stupid as im no expert on flashlights .
1)is the emisar d4 durable enough for work and edc(i work in construction so dropping it on the ground and puddles of water will be inevitable)
2) i usually use 250-600 lumens max on my previous lights so what kind of runtimes can i expect from the d4 if i use it that way(the 3000+ lumens of the d4 makes it nice to have even if i wont need to use it often)
3) how long of a lifespan can i expect from the light itself ? Eg. The led .
I can’t answer all of those, but here’s at least a partial answer.
The light uses 350mA at the ~150 lm level, so it probably uses about 2 to 4 times as much power at the 250-600 lm levels you described. Maybe 700 to 1400 mA, which on a 3000 mAh cell works out to about 2 to 4.5 hours.
The LED itself is unlikely to ever burn out or need replacing, especially if you have the XP-L HI model. I hear the Nichia 219c may have some difficulty when used at turbo a lot, but it should generally still be fine for normal use. The main thing people have reported issues with is a broken switch wire. But that will generally show up right away, and shouldn’t really degrade over time. Or a couple people have managed to break the lens, but it’s pretty easy to replace.