Ultrafire WF-1800L

[Zeva]

Sooo I bought this light in shanghai last week for ~$40 american? they claim it has 5 Q5 it can use eitehr 2x 18650 or 4x 16340 with 18650s it draws about .62 with 2x 18650 and about .35 using 4x 16340s! ill try to get some pictures up! id like to know if anyone else has this light or has more information about it? Ill try to get some photos up tomorrow ohh its also 5 mode high med low fast strobe and a slower strobe but it doesnt seem to be a sosososos?

P.S. I looked on DX and they dont seem to carry this light?

 

[brted]

Sounds very similar to the Trustfire TR-1200. Should be impressive.

 

[space-time]

Here is a picture on a chinese-language wholesaler site. It does look like the TR-1200 http://www.okf1.cn/product.asp?id=629

I'll bet they have used the new (max) 460+ lumen CREE XP-Gs. From the data sheet lumen vs. forward current graph http://www.cree.com/Products/xlamp_xpg.asp it looks like the chip would put out right around 360 lumens at 1 amp - that same TR-1200 driver. 360 lm x 5 emitters = 1800 lm.

I want one! But nowhere to buy it...

 

[mfm]

I'll bet they have used the new (max) 460+ lumen CREE XP-Gs.

Except both the OP and the site you linked says Q5.

 

[Zeva]

I am certain that they dont have xp-g's at least it doesn't look like the xp-g in my p60 drop in Mine seems to run from 4x 16340 but the one on DX says only up to 12v? Hmm it might be slightly different? is there a way to tell if it can handle that type of voltage? its not turning into a cloud of smoke or anything and these cheap chinese brands are well known for over rating lumens i dont mind it seems brighter than the single Xp-g i have... compared to my P7 mag it seems to have better throw but less flood Ohh also theres a high pitch humming sound? comming from the tail cap i m not sure what taht is from.. i can barley hear it... i can only hear it in a silent room what does that mean though? i think it has something to do with the driver?/ multi modes? The pitch changes with hi medium and low

 

[space-time]

Except both the OP and the site you linked says Q5.

Whoops! Right you are.

 

[brted]

I am certain that they dont have xp-g's at least it doesn't look like the xp-g in my p60 drop in Mine seems to run from 4x 16340 but the one on DX says only up to 12v? Hmm it might be slightly different?

They could have different drivers.

is there a way to tell if it can handle that type of voltage?

Why would you want to? Use two 18650's and be happy. You could use 4 16340's, but what would be the point? It wouldn't be any brighter and wouldn't run as long. Plus I don't know that it's a great idea to put 4 li-ion cells together in series like that if you don't have to.

Ohh also theres a high pitch humming sound? comming from the tail cap i m not sure what taht is from.. i can barley hear it... i can only hear it in a silent room what does that mean though? i think it has something to do with the driver?/ multi modes? The pitch changes with hi medium and low

Check all of your connections and make sure all the bare metal parts are clean (like the end of the tube, threads). Could also be a bad connection in the switch so check if anything isn't lining up there. It could be a poor solder joint, so if you're handy with a soldering iron you might need to re-solder a joint (at the LED or the wires going into the driver) if one looks like a cold joint or bad work.

 

[Brutus325]

Ok, first post here

I bought the same light in Shanghai a couple months ago and it has quit working! I dont know if it is the contacts or what but I cant get it to work. It was working fine and seems that it started acting up after I changed the batteries so I am thinking the contacts are bad somewhere. does the board come out the back of the head?