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may be a stupid quiestion, but which way does battery go??

funfordds

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just got my first green laser pointer, it is a 50 mw o-like with adjustable focus. it runs off a 18650 battery. i dont want to fry my laser so in any help as to which way to insert the battery would be great! thanks!
 

Glutton

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I think it is case positive.

The negative end goes in first.

My transformable 18650 is like that.
 
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greens are case positive so you put the batteries negative(the flat side) side facing/touching the spring.
 

Arayan

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In my exeperience the positive pole is always opposite the exit of laser beam...
 
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You wont fry your laser...


There's a regulator diode to absorb reverse voltage if you put the battery the wrong way...
 
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Never heard of that, but I remember seeing one on every module I used.

And they are on Rkcstr, FlexDrive and DDL drivers.
 




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