Intended as a series of shots for separate videos, I couldn't resist stitching these together, so there is a bit of repetition. Flashlights are Fenix TK41, ThruNite TN12 (2014 version), 100W cool white LED on computer heatsink and 100W warm white LED powered by 2x 18V Nickel Cadmium power tool batteries (no current limiting).
By Julian
Youtuber, shed dweller, solar charge controller aficionado
what is a average price for a good flashlight?
Can you test out the Bell + Howell LED Flashlight trough the fog?
Julian, I'm looking to convert old hollywood film lights to LED – they are 200w to 5000w Tungstens – I like the project of your 100w flashlight – I'm thinking of doing that exact set up with the 600w booster for the small lights – but I've seen in another video you used a 150w booster with no heat sink on the back to power two 100w COB LED's (which I'm also thinking of doing for a 2k tungsten by using a 200w COB) – Now my question is, would a single 200w COB LED stay cool with the same heat sink and fan you used with the 100w? Any advice would be appreciated – Thanks!
Hi Julian, do you like the cool white? I want the tn12 but cannot decide on cool or neutral, ill use it in the woods for looking for stuff but I don't like the 20% loss of output the neutral has, someday ill decide. hopefully lol
do you think we realised it was foggy?
Terrific demo, thanks!
You should try the Olight M3X Triton
Julian this has nothing to do with your lights, they are awesome by the way, But tell me why the lower the voltage the higher the amps out put. Example a 60watt solar panel says its puts out 18volts and thats 3.33 amps so if i lower the voltage the amps go up??? that is something i'm just not understanding any help that would be great.
You will never go wrong with LED flashlights! Thanks for another great video.
Love your videos, very interesting to see what you make from so cheap stuff anyone could buy off of ebay. I have manage to make a portable 30cm X 30cm greenhouse powered by one of those 12v usb batteries you have reviewed, and a small solar panel to charge it. I would love to see you make such a project in the future! Do you think a 12v battery is enough for two 12v pc fans? I had a few design issues with all the wires from the 2 fans and 12/24v red/blue led light.
cool stuff 🙂
i like a good old maglite. my mag led which is rated at 135 lumens seems to hold its ground with many of these 18650 torches around now days.
Hi Julian, really find your videos fascinating!
Not advertising but I've bought two of these torches recently: Lighthouse Elite EHAWK3D Focusing Torch 3 Function 5w 3D – Not small, not lightweight but cheap ( £20), VERY bright and very little diffusion when focused.
Regards, Martin
The TK41 appears to have an efficient lens which concentrates the beam centrally with just enough beyond to give context. When compared, I see more diffusion with the TN12. Both of these impressions may simply have to do with range and lens control in your camera as well (might have been some subtle changes caused by proximity to the light source).
Those home made units are impressive performers as flood lighting especially.
Looks to be a bit of snow there, mixed in with some light rain. Button up your overcoat Julian!
How long do those powertool batteries last?
i had the same experience when comparing a 100w led to the TN12.
Interesting that the TN12 spot is that much wider than the TK41.
I really like the TN12 but the spot could be a bit less wide to get a higher range but i love the output power of the TN12 for working in the dark. 😉
Maybe the TK41 has a better range.
great comparison.