HOW Do i use a voltmeter to test what my fenix flashlights' leds are driven at?

CyberCT

Enlightened
Joined
May 10, 2010
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633
I've been using a voltmeter to measure the volts for my 18650s both coming out of my Fenix lights after use, and off the charger. Now I'm using it for my eneloops too.



But I have seen people here post that they use a voltmeter to determine what their LED flashlights are driven at on different modes (low, high, etc), or at the tailcap.



Here are the Fenix flashlights I own:



TK35

PD31

TK40

TK45

LD20

LD01



For Fenix owners that know how to answer my question, how do I more preferably go about measuring what the LED is being driven at for the TK35 and PD31? But any of the lights listed above would be a big help. I put my voltmeter up to my TK35 on the battery carrier (the top that has the center and ring around it) with my positive and negative needles and read 3.6v. Please help.
 
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