Strange 3xAAA flashlight

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Davx
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Strange 3xAAA flashlight

I'm walking in a local chinese store when i see this light: Bailong BL-8424

bl

At first sight it seems a classical flood-to-throw but when i look at the price i was really surprised. It costs 3,5 euro (about 5 dollars) including the batteries. This is enough to give it a try!
Once at home i search on the web and i can find the site of this producer. When i read "Cree Q3 led" i can't believe it so i put the battery and that's what i see:

led

Good light but obviously is not a Q3.. So i decided to unmount it and thats the result:

open1open2

What kind of led do you think it is? It is mounted on an alluminium 20mm star.
The circuit is 20 mm large and suppose is max 500 mA but maybe is less. When i have more time i managed to measure the output. It has the classical 3 mode: High-Low-Strobe.

Now the conclusion are 2:

1. For that price is a good deal but not really useful (i will reuse some part like body and lens)
2. Never trust Bailong's technical specifications

Do you think it will be good for a real Q3 upgrade with a 1000 ma board? Or is better to use lower current because of poor heatsink?

The body is very similar to this http://www.dealextreme.com/p/jft-803-flood-to-throw-zooming-focusable-cr... so maybe i can also use 18650 on it. Or not?

Thanks for any advice.


"There are always new jobs, women, and apartments......there is only ONE BLF." - Chicago X (27/03/2012)

Edited by: Davx on 03/22/2011 - 18:44
Don
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Looks like a generic Chinese half-watt LED to me.

Some 3xAAA lights will take an 18650, some will not. Best way to find out is to try it.

1A might be excessive or might not - I'd go for the highest bin XP-E you can find - probably an R2-R5 (I believe XP-E R5s are available) - should cost very little more than a Q3 and will give less heat for the same light output.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

Davx
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Thanks Don,
probably i'll have to remove the spring to use 18650 and also put a sort of handmade adapter to avoid rattle inside the body.

I'll already have a pair of Q3 and i begin trying with this then i can try upgrade. So 1A might be excessive.. For the led or for the heat sink?

"There are always new jobs, women, and apartments......there is only ONE BLF." - Chicago X (27/03/2012)

okwchin
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Don wrote:

Looks like a generic Chinese half-watt LED to me.

Some 3xAAA lights will take an 18650, some will not. Best way to find out is to try it.

1A might be excessive or might not - I'd go for the highest bin XP-E you can find - probably an R2-R5 (I believe XP-E R5s are available) - should cost very little more than a Q3 and will give less heat for the same light output.

 

Anyways, thats just nitpicking...  Is there significant metal under the emitter? or is it just held in place by the edges of the star? Id be worried about proper heat pathways if there isnt any metal under the emitter.

 

I thought XP-E only go up to R2, XP-G continue from then onwards, currently commonly available at R5.

"like everyone else - I’m looking for my next “last” flashlight" -  ohnonothimagain

Don
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X2000 innards.

X2000

 

Tailcap off

Tube and tailcap

 

Bezel and lens removed

x2000

 

Pill unscrewed

Pill out

 

Once the pill is removed, the head just pulls off

X2K

 

This one's toast so if anyone wants I'll continue the dissection.

 

The numbers from my light tests are always to be found here.

https://spreadsheets.google.com/ccc?key=0ApkFM37n_QnRdDU5MDNzOURjYllmZHI...

Davx
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Thanks everybody for advice and suggestion, and also for the image of x2000 disassembled. I try with 18650 and it works. I just have to find something better to perfectly adapt the battery. For the led i suppose the only way to know is trying.

I wait for lower current circuit than i begin my project.

Thanks again

"There are always new jobs, women, and apartments......there is only ONE BLF." - Chicago X (27/03/2012)

Boaz
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[[/quote]Okwchin

 

I thought XP-E only go up to R2, XP-G continue from then onwards, currently commonly available at R5.

[/quote]

http://www.cree.com/products/pdf/XLampXP_B&L.pdf

I thought that too until I got the eastward jy-09 with the xpe-r3

appears there is an xpe - r4 as well ..

.R5 i don't know about .??.According to lots of chinese dealers the answer is yes ..But i doubt they know their heads from their tails . if you google it they all pop up.. cree isn't showing it  in anything i see on the net

       καὶ τὸ φῶς ἐν τῇ σκοτίᾳ φαίνει καὶ ἡ σκοτία αὐτὸ οὐ κατέλαβεν

                            

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