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

[funfordds]

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!

 

[Elektrotechniker]

insert the battery so the spring of the host touches the - of the battery?

 

[Glutton]

I think it is case positive.

The negative end goes in first.

My transformable 18650 is like that.

 

[Slipstream]

insert the battery so the spring of the host touches the - of the battery?

every green I've had is usually case positive, spring of the host touches the positive.

---[==== (- +)]

 

[blue lasers]

greens are case positive so you put the batteries negative(the flat side) side facing/touching the spring.

 

[Elektrotechniker]

Ugh, I thought ... anyway. Could the laser fry even if the battery was put the wrong way?

 

[Arayan]

In my exeperience the positive pole is always opposite the exit of laser beam...

 

[funfordds]

thanks didnt want to fry my laser before i even got a chance to use it

 

[BuildAbluraylaser]

You wont fry your laser...


There's a regulator diode to absorb reverse voltage if you put the battery the wrong way...

 

[mfo]

You wont fry your laser...


There's a regulator diode to absorb reverse voltage if you put the battery the wrong way...

Didn't Sbdwag fry a laser like that once? I'm pretty sure it was a greenie.

 

[BuildAbluraylaser]

Never heard of that, but I remember seeing one on every module I used.

And they are on Rkcstr, FlexDrive and DDL drivers.