noobie here, help to identify led emitter

[SugarBear6]

hi guys

i'm new here and i'm from Manila, Philippines, been a lurker for quite sometime but this is my first post here.

been through some cheap chinese made lights and some mag lights from the solitaire to 4D. but i got to hold on to my SF G2 as my EDC and this new light made by POLICE.

i'm fairly new to the led flashlight world so i kinda need help with this one. can you guys identify what kind of led bulb this flashlight have. this is a dual mode light press once for low and 2nd press for high, then third is off.
it runs on 1 x 18650 as primary but can easily fir two cr123's but i don't dare put those in for fear of burning out the led.

 

[kramer5150]

silver backed Cree, 4-wire, XR-E.

Its impossible to tell what BIN it is just by looking. Most likely a P4.

 

[SugarBear6]

excuse my ignorance but what is "BIN"?

 

[Rossymeister]

excuse my ignorance but what is "BIN"?

Bin codes are used to sort LEDs by luminous flux (lumen output at a specified drive level), color, tint, and Vf.

http://www.candlepowerforums.com/vb/showthread.php?t=172991

 

[Marduke]

Light looks like a generic U2 clone.

 

[gswitter]

I have a similar (if not the same) generic U2-style light from one of the Chinese vendors. They're common. Mine has a Cree XR-E P4 and a two stage tail. The emitter/reflector puts out a nice beam and it throws very well.

But, I bummed that mine didn't come with that sweet pipe bomb charger. :huh:

 

[kramer5150]

I thought that thing was just a battery-carrier or storage case. That charger looks kind of scary for unprotected cells. Does it have regulation circuit to cut off charge at 4.2V? Does it have an open vent on one side, or is it a sealed enclosure? That "could" turn into a small pipe bomb if not designed properly.... :candle:

 

[Gunner12]

"POLICE" is another one of those generic Surefire looking body lights. Good bang for the buck.

It's a Cree XR-E as stated above.

The light might just have a resistor so I wouldn't try 2 CR123s.

 

[SugarBear6]

I thought that thing was just a battery-carrier or storage case. That charger looks kind of scary for unprotected cells. Does it have regulation circuit to cut off charge at 4.2V? Does it have an open vent on one side, or is it a sealed enclosure? That "could" turn into a small pipe bomb if not designed properly.... :candle:

yes sir, it has a cut off circuit, when the battery is at full charge the led indicator on the charger changes from red to green indicating a full charge. and no it does not have an open vent.

 

[SugarBear6]

"POLICE" is another one of those generic Surefire looking body lights. Good bang for the buck.

It's a Cree XR-E as stated above.

The light might just have a resistor so I wouldn't try 2 CR123s.

you're right about that. my friends who has the same light as above told me that his light is not functioning anymore, so i took a look at it last night and disassembled the led head and guess what's inside? crummy looking resistors which looks like it's been hot glued to the board. jeesh.

i tested the led direct from the battery and its working fine but when tested on the circuit or driver (dunno what its called) it won't light up.
we had no choice but to make a direct connection in order for the led to light up again.

and there are no sellers here for that kind of circuit board

sorry no pics, i forgot to take some.

 

[SugarBear6]

any idea on how many lumens this light throws?

thanks for all the replies

 

[gswitter]

You couldn't pay me to use that charger and an unprotected cell.

(Actually, you could, but only as an experiment with every safety precaution in triplicate).

An 18650 venting is scary enough. In a sealed enclosure... eesh!

 

[kramer5150]

....and no it does not have an open vent.

I can't believe they would sell that with unprotected 18650 cells if it is truly an air-tight seal, you'd be wise to drill a small hole or two through the case to allow pressure to escape. It won't look as nice, but it will prevent an explosion if the cell ever needs to vent Lithium.

As for lumen output, its hard to say because it would all depend on the drive current delivered to the emitter, efficiency of the optics used, and thermal efficiency of the whole thing. I'd venture a guess in the 85-120 lumen ballpark.

 

[SugarBear6]

I can't believe they would sell that with unprotected 18650 cells if it is truly an air-tight seal, you'd be wise to drill a small hole or two through the case to allow pressure to escape. It won't look as nice, but it will prevent an explosion if the cell ever needs to vent Lithium.

As for lumen output, its hard to say because it would all depend on the drive current delivered to the emitter, efficiency of the optics used, and thermal efficiency of the whole thing. I'd venture a guess in the 85-120 lumen ballpark.

that's what i was guesstimating too around 80 to 120 lumens.

anyways, i'm still on the hunt here for a protected 18650 batt and charger too. it's kinda hard to find these items here.


any suggestions on how to make this light around 200 lumens by just replacing the driver or emitter? preferrably just the emitter itself 'cause god knows where i'd find a suitable driver for this here.

 

[gswitter]

any suggestions on how to make this light around 200 lumens by just replacing the driver or emitter? preferrably just the emitter itself 'cause god knows where i'd find a suitable driver for this here.

That part might not be a problem. What's the diameter of the board on the underside of the pill? There's no shortage of cheap boards for single Li-ion applications.

 

[SugarBear6]

i'll take a measurement when i get home, will post it later thanks

 

[Marduke]

For all your driver, battery, and charger needs, free shipping worldwide
http://www.dealextreme.com/

 

[Gunner12]

From Dealextreme, it seems like the Trustfire 18650s are better then the other ones.

If you want low price, the DSD charger works. I'd only charge 1 cell at a time though. The Ultrafire one at double the cost is good charger that many use here.

 

[kramer5150]

I don't see any reason why you can't try and upgrade the emitter/DC circuit. Its all aluminum, nothing is glued, and you already have it apart. You'll need to heat gun the P4+board off the pill though. Looks like it should be around a 17mm DC board, and a standard Cree star board should fit.

:thumbsup: