What current would this Cree flashlight really draw

Candle Power Forums

Help Support Candle Power:

N4aeq

Newly Enlightened
Joined
Aug 27, 2002
Messages
106
City & State/Province
catawba,nc
There is a new flashlight on the market that has 12x XM-l t6 Cree's and uses 6x 18650s cells. They claim it has a 5 amp regulated output to the Cree's. The 18650s are in 2S3P setup so that would be 7.2 volts x 5 amps, 36w (not counting regulator loss). This seems way off if you look up the maximum current for 1 XM-l t6, 3 amps so 3 amps x 12 would be 36 amps if at 3. 6 v then thats close to 130 watts? I don't know ther real world currrent draw for 1x XM-L T6 but 5 amps sounds very low for 12 of them.
 
5 amp regulated output!!!

They are using number of LEDs to impress the unwary. 5/12 means each LED gets 0.4A. XMLs do NOT have to run at 3A. Cree recommends 1A normal, 2A max!***
Still it should give you 2000 LED lumens, 1500 lumens out the front.
A 3*XML Nitecore TM11 Tiny Monster wold be about the same brightness but much smaller.

http://www.cree.com/~/media/Files/C...d Modules/XLamp/Data and Binning/XLampXML.pdf
*** (Cree used to recommend 0.7A normal, 1.4A max)

Have you tried holding on to a 100W light bulb. How long can you hold it before you gat taken to the emergency room with 3rd degree burns? A 130W flashlight is impractical.
 
Thanks, I wanted a hi power light that have cells in parallel sense I use laptop cells (2500-2800ma) so that would be 7500 to 8400ma available at 1C discharge rate. This
light should be ok to use laptop cells in if the 5 amp draw is correct.
 

Latest posts

Back
Top