So you got slightly over 2 hours on turbo mode continuous? Wow, that is just strange, I mean mine keeps running but after the 30 or so minutes the brightness clearly wasn't turbo anymore, it started to shine as if on medium setting from that point on. I think I'll give it another shot but this time with my new Eneloops, hopefully that will change the outcome.
Yes, slightly over 2 hours on turbo with 2500mAh cells and around 1 hour and 40 minutes with Eneloops.
Maybe Fenix has changed the circuit in TK40 to drop in brightness after some time, like on TK45?
When it drops in brightness can you turn it off and then on again to get full brightness?
What about temperature? My Quark Turbo last about 50% longer on turbo when I put it in a bucket of water
I just finished testing the TK40 on HIGH setting, wanted to see how long it would shine on high. I placed brand new, factory pre-charged Eneloops into the TK and let it run on high. After 3 hours and 20 minutes, the brightness went down to about medium setting and if I tried to switch between medium, high and turbo, the brightness was identical in all three modes (about equivalent to medium).
Mine obviously keeps dropping in brightness and faster than what Fenix suggests at their website. When I turned it off and on again, it wouldn't go back to the original brightness, it's still dimmed down to a lower output.
Last edited by SantaClawz; 10-04-2010 at 04:21 PM.
SantaClawz get a Maha C9000 and charge your batteries to be sure about their capacity/condition.
EDC: FENIX TK11 R2 & PD32 as a backup along with PD20+Fenix headband as EDC headlamp.
Thanks for the great review.
I just noticed yr input today which led back to May, as I did not return on this topic since. But yes, it was on "Auto" mode as I've yet to overcome the mode settings on this Olympus camera. No, its not a Fuji.
Someday, I'll do a rerun again and through the HD Sanyo Xacti CG10 camera on 720p settings.
Click>>: Friends, enjoy the recent Santana Concert with me snapped for YouTube.
Last edited by SemperFi; 10-12-2010 at 01:47 AM.
Great review, Im new to CPF and this site is awsome. I have my tk40 sitting on my night stand, I figured instead of shooting a burglar why not try to blind them...lot less paperwork!
im torn between TK40 AND TK45
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I have both the TK40 and the 45...
I like the UI on the 45 better... 2 buttons.... not as confusing.
The beams are different though.
TK40 more throw
TK45 more flood..... a wall of light ... nice
Now just waiting for my JHanko LF3XT to be made.
My Lights In Detail
I'm glad I made my choice on the TK40 and soon after, the X12 from LedLenser. Reason being the realization on what a throw can accomplish to ascertain its reach when it was then engulfed by the X21's flood & throw with a simple slide of the head. WOW.... is the magnification achieved from just 4 D cells in the X21.
Hence, no need to go for the TK45 for my own reasons, just to find out just how much better or not at all, as in contrast to the TK40. Both blasting together simultaneously would still not beat the size, distance or range that the LedLenser X21 would overcome both flashing its best together by an extra furlong or more...
Last edited by SemperFi; 10-21-2010 at 02:44 AM.
OK, so the TK40 draws roughly 2.6 amps on turbo, up to possible 3 amps for a very short period of time? I'm confused as to why it briefly goes up to 3 amps.
I have an idea ...
So I found a thread on how to disassemble the head enough to get to the LED here:
I see my TK40 to be a perfect host for an LED replacement: a T6 neutral white LED! The max current draw from the driver will suit the LED very nicely. Unless someone with more knowledge will tell me forward voltage (which I don't quite understand) or some other reason that an XML would not work in this light.
I have not use for my TK40 anymore and if I were to sell it it wouldn't be worth the sale. It is drowned out by the TK41, TK35, and even IMO the TK45. Can someone with LED knowledge confirm this should essentially work? I did mod two of my LD20s and my Fenix PD31 with neutral XPG-R5s, but they came with cool white XPG-R5s to begin with so they are essentially the same LED.
Last edited by CyberCT; 02-13-2012 at 07:01 PM.