| | |  | Nitecore | Home » » Fenix TK40 High Performance LED Flashlight | | | | | | | Description: | | The TK40 is the latest installment in the TK-Series and is the first Fenix to use Cree's MC-E quad-die, very powerful LED. Powered by eight AA batteries and boasting 630 lumens of output, the TK-40 is the ultimate portable, long-range illumination tool for the backpacker, explorer, and flashlight lover.
The TK40 is the world's brightest, AA-powered flashlight. Its optimized reflector enables it to throw a wall of light for over 300 meters. All of this luminosity is sealed tight in a waterproof, durable, and strong aluminum body that measures in at just 208mm long.
The TK40 has two different modes of output, each with four different levels - a total of eight different outputs.
* Its primary modes are constant-on: Turbo (630 lumens), Low (13 lumens), Medium (93 lumens), and High (277 lumens).
* Its secondary modes are strobe/flash: Strobe, Slow Flash, SOS, and Fast Flash.
The TK40 also has intelligent circuitry that will memorize your last-used primary mode. | | | Features: | |
• Cree MC-E LED with a 50,000 hour lifespan. Digitally regulated for constant output.
• Dimensions - 208mm (L) x 39.4mm (D). Weight - 284g (excluding batteries).
• Crafted from T6 aircraft-grade aluminum. Type-III hard-anodized finish.
• Waterproof to IPX-8 standard. Toughened ultra-clear glass lens with anti-reflective coating.
• Push-button tailcap switch. Stands on end to operate as a candle.
| | | Product Details: | | | Product Length:
| 8.19 inches | | Product Width:
| 2.44 inches | | Product Height:
| 2.44 inches | | Product Weight:
| 0.63 pounds | | Package Length:
| 8.6 inches | | Package Width:
| 3.0 inches | | Package Height:
| 2.7 inches | | Package Weight:
| 0.95 pounds | | Average Customer Rating:
|  based on 29 reviews |
| | | | Customer Reviews: | |
Average Customer Review:
Write an online review and share your thoughts with other customers.
 This flashlight is overkill! The best!Mar 10, 2010
After deciding to buy this fenix tk40, I looked around to find the best price, I found a seller on ebay selling a brand new one for $124 so I ordered it on ebay. I usually buy items on amazon since they almost always have the best price unless I find a cheaper price on ebay. I received my light 1 business day after I paid with paypal, talk about fast shipping!
Anyways I opened the box up, placed 8 AA duracell batteries in it, turned it on it took a few min for me to understand how to work the functions, so I cheated and read the instructions. Now i know how to use the lights functions, and I am extremely impressed! This light is SO BRIGHT in turbo mode it can damage ones eyes! So becareful! It says on instructions: " WARNING: The TK40 is a high-brightness lighting device and capable of causing eye damage, please avoid shining the light directly into the eyes."
This being said, this flashlight is overkill because it is so powerful in turbo/high mode, do I really need this light? Maybe.. but probably not. I just like to spoil myself, Do i really need my guns? probably not but you never know if you are going to need it so it is good to have around, I just bought them because they are valuable just like this flashlight has great value. Yes it is a bit pricey, but if you can afford it, it is well worth the buy for its value. It has 4 primary modes, turbo, low, medium, and high. Then it has another 4 secondary strobe modes which adds a total 8 modes in one flashlight! The 4 Strobe modes are: Strobe, slow flash, SOS, and fast flash.
Being a brand name quality price kinda guy who is picky with where products are made and what brands they are. Fenix is an exception, it is high quality, I am a maglite fan because I like the good quality of maglites, they are well built lights and are affordable, but this fenix flashlight is probably 3 times higher quality than the maglites. I love Maglites, I own 3 of them all led's, but I wanted this fenix tk40 because it is brighter than my maglites! secondly it is pretty light for its size! lighter than some of my maglites, thirdly, it is WATERPROOF! IPX8!, fourthly it has a very clean nice, yet extremely tough finish which reminds me of the durable finish of glock handguns. Fifthly, it has 8 modes of functions. Sixthly it uses AA type batteries which are affordable and easy to get, I prefer using duracell, and energizer. Do not use cheap batteries in this flashlight.
This flashlight is a bit overkill in my opinion because it is too good, and it is too bright in mode turbo/high. but that is a good thing. It is like buying a ferrari, ferrari's are high performance and very expensive cars, do i need one? not really, but i want one =). If you like nice things, high performance things, then buy this flashlight. If you just need a light to check your tires at night or for looking under your engine hood, then a maglight led is good enough. Personally I like to have the best, because sometimes it comes in handy.
It says " High intensity flashlight powered by AA batterry specially designed for exploration." So this is the perfect flashlight for survival in the great wilderness.
Fenix TK40 - Outstanding ValueFeb 19, 2010
The best, brightest, most versatile flashlight that I've ever had, and I've had a few. I would recommend it to anyone that wants to see in the dark.
2 of 3 found the following review helpful:
 Zombie Killer. Excellent when it works. Fenix warranty is confusingFeb 15, 2010
There already are plenty of reviews online about the light, its accessories, and its durability. I will describe my experience with Fenix's customer service when the light malfunctioned.
This flashlight has Cree MC-E Quad Super LED. All four LEDs in the assembly are supposed to light up together, whether at low power or in turbo mode. My first copy purchased from Amazon worked great for about a month or two and then one of the LEDs went semi-dead. Looking carefully, I could see that one of the four LEDs would light up only in turbo mode, and even then it flickered -- with eight fully charged Eneloop batteries. Amazon sent me a replacement that worked fine.
Before the light was replaced, I reported my problem to Amazon and they pointed me to Fenix's customer service. Fenix replied that warranties are only honored if the item was purchased directly from their website. Since my light was purchased from Amazon, Fenix declined to help me directly. Finally, I brought up this issue with Amazon, and after verification with Fenix, they sent me a replacement.
Otherwise, TK-40's performance is superlative. On a fishing trip it outshone the boat's searchlight; it is bright enough to get you in trouble on road or off road (your neighbors will fear it). I announce my arrival with the strobe mode. When the zombie apocalypse decends upon us you must remember to have at least three of these and Brunton's Solaris.
One word about the "630 Lumens" figure. There is some dispute over whether Fenix reports emitter brightness or out-of-the-front brightness, I suspect it is the latter.
Build-wise, all Fenix products have hard anodized finish, are waterproof and shockproof etc. but Fenix's goal is always "brightness". In contrast, its American competitors such as Inova and Surefire, focus on build first and performance later. I have NDI and LD20 Premium Q5 along with the TK-40, all three of which show some wear and tear on the anodized finish. Expect the same with your copy.
My recommendation is, buy this flashlight, it will not disappoint until something goes wrong.
5 of 8 found the following review helpful:
Both impressed and disappointedFeb 12, 2010
I purchased this light to use as an alignment tool in a cement kiln. I needed something that would project a beam through the center of a coal burner to the other end of the kiln 220' away. I could not get the TK40 in time, so I went to a local store and bought a Streamlight Super Tac (at about half the price) before I got the TK40. The streamlight is rated for 135 lumens vs. 630 in the TK40. I don't dispute the accuracy of either light's rating, but what I found was that at any distance, the Super Tac was just as bright, but covered an area about 1/4 the size of the TK40. For my needs, there was no benefit of the more expensive TK40 flashlight (both worked great, by the way). I can definetely see the advantage of the larger "throw" for normal flashlight use outdoors and would certainly recommend this flashlight for that use. I also like the multiple levels to save battery when you don't need as much light. The Super Tac is either on or off. I don't understand concerns with the user interface... press and hold to go to the next brightness level, double click to turn on strobe. Just push like any other flashlight to turn on and off if you don't want to change levels. Pretty simple.
I gave this light 3 stars for two reasons: 1. I expected the light to have a more intense beam rather than the same intensity over a larger area. 2. It is to bulky and heavy to carry on a regular basis, especially compared to the streamlight.
Advantages:
1. Very bright with large throw area
2. Multiple intensity setting extends battery life
3. Easy user interface
4. AA batteries, which you can get anywhere, anytime
Disadvantages:
1. Bulky and Heavy
2. No holster
3. Have to unscrew the bottom A LOT to prevent parasitic battery drain
4. Light is not more intense than less expensive flashlights, just covers more area at same intensity
 Spectacular light ... some minor issues ...Feb 10, 2010
First of all, let me address the light itself ...
Unbelievable. This puppy is *bright*. The various brightness levels are situated so that there is one appropriate for pretty much any task. The 630 lumen "turbo" mode is astonishingly bright ... from my balcony, it'll illuminate my entire front yard (which is bigger than a regulation football field). Once the novelty wore off, though, I find that the "high" mode (about 300 lumens) is more than adequate for most tasks. Being able to run off of just 4 batteries is a big plus. I strongly recommend you go ahead and spring for two of these to go with it: Sanyo Eneloop 4 Pack AA NiMH Pre-Charged Rechargable Batteries w/ Charger, unless you have rechargeables on hand already.
Now for the downsides ...
The light is pricey. I was torn between this light and this one: ITP Light A6 Polestar 700 Lumen Cree MC-E LED Flashlight Black. Ultimately, I went with the Fenix because of my past experiences with Fenix lights (they are, IMHO, the best you can get). I'll probably pick up a "Polestar" at some point, just to try it out ... it's cheap enough to just chuck in my glovebox, which is nice.
My major gripes, though, center on accessories. The lens of the light is glass, and it is pretty big, and the bezel isn't very "deep" (the lens isn't very recessed), so it's exposed. I'm not sure how tough it is ... not willing to test this, but it seems likely that it'll be easy to break, especially if you drop it, or you toss it in a bag full of tools. A cap or something to protect the lens when the light isn't being used would have been nice. As it stands, I'm going to try to find one of those bungee scope lens cap pairs, or perhaps make one out of a couple of PVC caps (not a bad idea to cover the switch, either).. A belt holster that protects the lens would also have been suitable. I'd love for the light to have a heavy metal clip like the LD10+.
The first thing to do when you get your TK40 is to open the package, and throw the shoulder strap that comes with it in the trash ... it's cheap, doesn't look very trustworthy, and generally isn't of the same quality as the light.
So the bottom line is that the light is spectacular; incredibly bright, with useful strobe/sos/flash modes, various brightness levels, and power options, and the build quality is extremely high, but be prepared to handle it like a camera or other sensitive equipment, due to the very large, very exposed glass lens.
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