Rayfoss dimming?

[LaserNate]

Hey guys, I just got my laser from Rayfoss a few weeks ago. I got the 30mW unit. When I turn it on it is real bright at first, and then dims after maybe a second. Sometimes it dims in three stages. Does this happen to anyone else or is it just me? If words don't do justice I can take a video.

 

[bobhaha]

It sounds like a battery issue, do you have a multimeter? If so check the batteries voltage level. Otherwise just change them and see if that solves the problem.

 

[LaserNate]

Just checked them, they are putting out 3.9 volts. I don't have any other cr123's, unfortunately. Do you think its a bad battery? It's the one that came with the laser from rayfoss.

 

[aryntha]

Nate,

This could also be just a typical DPSS warm-up cycle crystal alignment issue.

How long have you run it? Does it always just dim, or does it sometimes jump up to a higher brightness?

3.9v for a CR123 is plenty actually (Usually they'll start at 4.2, for a RCR123 or ~3.6 for a CR123.. are you sure it's not an RCR123?)
(in other words, are you sure it's not a rechargeable..)

Have you tried warming the laser up fully, say, in your hand, before turning it on, and seeing if that affects the cycle?

 

[LaserNate]

My bad, Yes it is an rcr123. It only jumps in brightness when I turn it on, It gets bright for about a half a second and dims to half that brightness. I ran it for about 3 minutes, and it doesn't seem to be warm. No changes in brightness either.