Review: Manker E02. 1xAAA - XPG3 - L shapped

congrats!

some of the most Wavy Output Ive ever seen on a chart: (pic is a link)

Even though the light is constant current w NoPWM, it is NOT constant brightness.

Something just dawned on me.
If we could track our own retina’s, they would probably not have a smooth line.
We have PWM !!

If we didn’t have built in dithering, imagine how crappy a movie would look?
Later,
Dithering Keith

Something just dawned on me.
If we could track our own retina’s, they would probably not have a smooth line.
We have PWM !!

If we didn’t have built in dithering, imagine how crappy a movie would look?
Later,
Dithering Keith

in the reality…y our view can not distinguish the difference between 255 lumens and 260 lumens for example … to say something, it’s the same as a flat line.

yes, I know we can’t see the difference between 200 and 260 either, but my battery can.

so yes, you can always tell yourself that what you can’t see without a test instrument does not matter, to you.

I otoh, want to know what is actually happening, so Im just sharing the unstable “constant” current regulation output that shows in the chart.

it seems every time I bring up something about the way a light works, people jump in to mention that it does not matter because they can’t notice…

I think that misses the point

In this graph we are not talking about difference 200 and 260…… we are talking about difference around 10 lumens… Is good comment, but I also comment my point of view. (sorry for disturb you comment :wink: )

Regards

Trevi, I respect your review efforts. Did you get the light for free?

fwiw, Not all lights that use Constant Current, have constant brightness, here is another example of a light with a wavy output, the Eagletac (uses Constant Current that does not produce constant brightness) in this chart, and also the SRT9 has wavy lines:(more info

Vendors have started sidestepping PWM by using Constant Current. But the brightness is not necessarily constant. Wavy lines are not straight lines:-)

Yes, that is also a great thing added.

Looks like not constant brightness but that I cannot notice very easily but PWM is very bad factor for me for some reason :slight_smile:

I am reading your comments in past days, seems your are very interested or have a problem with people that have free units…. You have seen my review. You have seen my grahps, some beams,…. are really data, not influence that sample are free or paid.
In any case, if you read enough…. you can see the thread opened here in BLF by Manker guys requestin people for review this and other lights, my name is in the list of people for send this sample, is open information for people that read the forum……
And if you read more and more, you can see that red flaslight is a sample for review, and after that I bought at my cost a grey light with nichia for add data comparison graph nichia Vs Cree.

Regards
Trevi

Very happy to learn with you that you cannot notice the ripples, even though you would notice PWM. I agree, ripples are not something that people notice. I do admit I would prefer to have flat regulated output, like on my Maratac and Tool.

[quote=Trevi_lux]

no
I do not like that sometimes Vendors flood this board with multiple free samples.
Some “reviews” offer little more than copy paste of the manufacturer web page.

Im glad you got a free red light, thanks for sharing your conclusions, enjoy it!

I’ve had nothing but problems with this light. The first (from Amazon) was DOA. Something in the tailcap was preventing a connection. The light worked fine if I shorted the tail, but would not work with the tailcap on. I tried cleaning it with no success. My 2nd Manker E02 (from HKEquipment) had the exact same problem.

If anyone has a suggestion what I should try next, please let me know. It seems that I am the only one having this problem.

Thanks,
Mike

Two identical problems… That’s quite unlikely. First thing that comes to my mind is that the battery is too long so the tailcap won’t make contact with battery tube; like physical lockout. Seems unrealistic though; this kind of stuff happens with (protected) lithium ion cells where length varies… What battery are you using? Have you tried just popping an alkaline to see if it works?

You were right…an alkaline worked. But that still doesn’t solve my problem as none of my NiMH batteries (3 different types) do work. Maybe if I put a wire ring in the bottom of the tailcap that will bridge the gap.

Thanks,
Mike

The ring might or would work if length is the problem, but that just seems so unlikely, especially because you tried three different types. Nevertheless, which 3 NiMH batteries did you use, and those batteries were not depleted?

Clearance Sale Now!! E02,E02H and E03H 50% OFF

“in any case the fact that moonlight can be adjusted from 0 to 0.5 w a Nichia is great!” …… You mean, you can’t adjust it, if you have a CW Cree??? Can anybody explain this?
I just ordered the E02H, and really wanted the Nichia, but they had none left; so had to buy the Cree version. :frowning:

I have both nichia and xpg, both can be set the same moonlight brightness, so don’t worry

Also bought the Cree version, but that was intentionally. My personal belief is that Mankers are a bit steep priced. But your review, and 50% discount, made me pull the trigger. Nice little light, but in no way flimsy.

:laughing: