LED Lenser runtimes

I was flicking through a work catalogue earlier, and was having a look at some of the LED Lenser torches on offer. The one thing that hit me was the runtime claims they make - The P2 light for example, is a 1AAA light that puts out 11 lumens with a runtime of 40 hours. Compare that to the Fenix e01 for example, which was promoted as having a fantastic runtime that gives 10 lumens for 11 hour plus another 10 hours of low output from the same 1AAA cell - that is near enough a 20 hour deficit compared to the LED Lenser.

Similarly comparing my Fenix L1T that gives 1.5 hours runtime at the maximum power of 98 lumens on 1AA, have a look at the LED Lenser Police tech focus light, which runs on 3AAA and puts out 80 lumens, yet gives 50 hours out output? Even with the 3AAA (looking at eneloops, 800mAh each, so either [email protected], or [email protected]) versus 1AA ([email protected]) and the slightly lower output that seems a huge difference, and in use my friends LED Lenser light is close enough in output to believe the claim (or at least that Fenix similarly boost the output claims) and he is still running on the batteries that were in the light as an in packet demo after a fair amount of use.

Is there something I am missing?

Led-lenser usually exaggerates their runtime claims. They also don't have constant regulation as most of the other brands have.

For example the claimed runtime for Led-lenser X21/X7 is 300 hours here and 600 hours here. And the reality:

Narcosynthesis said:

LED Lenser Police tech focus light, which runs on 3AAA and puts out 80 lumens, yet gives 50 hours out output? Even with the 3AAA

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They may claim 50 hours but reality is 1 hour to 50% output and 5 hours to 0% output.
Almost all Ledlenser´s have tested in this Finnish website.

Police tech is different model name = Hokus Fokus.

LED Lenser massively exaggerates the runtimes of their lights and preys on those that don't know any better than to believe them.

I have the Police Tech and it is direct driven, outdated, overpriced and can't compete with any real flashlight.

I was looking too Led Lenser P7:

4 AAA batteries , 200 meters, 120 hours ??? :huh:


" The LED LENSER® P7 . Circular spotlight or sharply focused beam with a range of up to 200 meters - the choice is yours! The P7 has a modular design, a Dynamic Switch (an important feature for police and armed forces), and three different brightness levels. One set of inexpensive batteries provides up to 120 hours** of light (in economy mode)."

"Their core piece is the Advanced Focus System (starting with LED LENSER® P5). This lens technology, jointly developed by Zweibrüder and the OEC Institute headed by Prof. Ries, Dr. Timinger and Rainer Jetter, represents a milestone in the history of artificial light. Press the pushbutton gently to make the white beam of LED LENSER® appear before your eyes like a cathedral of light. A double-shell reflector-lens (patent pending) allows for stageless transition from broad floodlight to sharply focused long-distance beam."

But...
https://www.candlepowerforums.com/threads/212579

Originally Posted by Swedpat "The most people who are knowledgeable of LED-lights understand that 167 lumens for 130 hours is just to good to be true for a 4xAAA light. But the problem is all people who are not aware of the LED technology.
Many will surely be deceived and then very dissapointed when they discover that the statement was really false. Also Ledlenser recommend alkalines (the claimed lumens concerns alkalines), whose output very fast decrease from the beginning. Therefore the point of purchasing a light with that promised brightness during such a long time will get lost, when it isn't true for a single hour! Ledlenser's marketing policy isn't fair, without doubt that kind of advertising is intentional. That's too bad."

P7 compared to several other lights.
http://www.candlepowerforums.com/vb/...47#post2499447

Those LL runtime claims are usually using the "economy mode" and until the flashlight no longer outputs light. If you want to know how long and how much light you will get in reality you could try looking for some runtime graphs.

But even the graphs don't show the truth on how the light will perform in real use if you use alkaline batteries and don't plan on depleting the batteries from 100% to 0% in one use(like they do when doing the runtime graphs). If you shut down the light in between battery changes the alkaline batteries have change to "rest" and give better performance when the light is put on again later on. That is most likely why your friends light still seems bright with the original batteries that came with it. If you want to use the light continuously for long times and still want to keep the light output steady, you might want to consider using NiMH rechargeable batteries.

jupello said:

Those LL runtime claims are usually using the "economy mode" and until the flashlight no longer outputs light. If you want to know how long and how much light you will get in reality you could try looking for some runtime graphs.

But even the graphs don't show the truth on how the light will perform in real use if you use alkaline batteries and don't plan on depleting the batteries from 100% to 0% in one use(like they do when doing the runtime graphs). If you shut down the light in between battery changes the alkaline batteries have change to "rest" and give better performance when the light is put on again later on. That is most likely why your friends light still seems bright with the original batteries that came with it. If you want to use the light continuously for long times and still want to keep the light output steady, you might want to consider using NiMH rechargeable batteries.

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1) What about lights which are single mode with equally rediculous runtimes? There is no "economy mode" there.

2) LL specifically forbids the use of NiMH cells in their lights because they are designed specifically for the higher internal resistance of alkalines (being mostly direct drive), so you are stuck with the alkaline discharge profile unless you want to void the warrenty.

Marduke said:

2) LL specifically forbids the use of alkaline cells in their lights because they are designed specifically for the higher internal resistance of alkalines (being mostly direct drive), so you are stuck with the alkaline discharge profile unless you want to void the warrenty.

Click to expand...

Did you mean ,"LL specifically forbids the use of NiMH cells in their lights because..." ?

Yes, thank you

If your wokplace is picking up the tab on the led lenser, you should get it and mod it by adding a driver, you can find them all over DX and KD. If you have to pay for it, don't waste your time and money

I guess I will be sticking with my Fenix lights for now then

Led Lenser P7 on Energizer ultimate lithium. 1-2 hours advantage over the alkalines.