Recent content by yawnny

I have given up on the weird bogus Ultrafire batteries, and chargers. Before I did, I determined that the single battery chargers will charge the blue Ultrafires to 4.09 volts, then shut off, but the charger indicator light remains flashing. The one double battery charger that I have will...

Weird. I hauled out an older one of the same model charger, and it seems to glow a steady red with the batteries I just received. So, either they changed something since a year or so ago, or both of the new chargers are more broken than designed. Oh well. OK, I'm done with them. The old charger...

Yep, they are definitely crap, and I understand why. A nice man on Youtube took one apart, reverse engineered it's simple circuitry, and sketched out a schematic revealing it's shortcomings and possible dangers, (and curiously enough, even a diode to protect against reversed polarity). In spite...

I just bought a laser that included 2 "Ultrafire" 18650 batteries, and 2 single incredibly cheap chargers for the same. Just how how are the chargers supposed to work? After running both batteries down to approx 3.7 volts, I tried to charge them in the chargers. Both of the chargers just sit...

Interesting. I was under the erroneous impression that all diode type lasers created IR as a byproduct of of their magical creation of the proper wave frequency. I appreciate the correction. The reason I ASSumed that the unit was up to no good, is that it started out working perfectly fine...

I can't argue with you, since I don't know. But, I do know that it would not make a dot on the the back of my hand at maybe two inches, in a dark room, but my phones camera picked it up. For all I know it was always making a really low low power dot, but I sure as heck wasn't going to look at it...

Most of you folks are probably aware of this already, but for those that aren't, just because your laser isn't emitting visible light doesn't mean that it ain't emitting something. The only reason i knew this is having read misc. threads and perhaps followed a few links here, where I learned...

Oh, I would agree with you in the case of most items, but I can't justify paying any more for an item that I haul out a couple of times a year to look at the dot. Someday I might decide that I need real quality lasers for some purpose, and I'll be willing to drop more than a couple of bucks on...

The different shaped dot is exactly what happened. Initially the dot was pin point, needle sharp. Way more defined than any of the handful of other green, and reds that I have. Then all the sudden, fuzzier, and fuzzier till nothing. I guess at the very least I could send him a picture of it...

Couple weeks ago I ordered a blue laser from some via Ebay from some outfit in China. Typical 301 tube, just under $5 with no battery, or other accessories. I received it yesterday. At first it put out the prettiest, tightest blue spot, but with each progressive activation of the laser, the...

Yeah, you don't have much convincing to do in order for me to pitch it. I just don't use them that much, or for anything practical, I hate to invest any amount of extra money in them. I've never left one unattended, and even charge my legit cell phone on a tile counter, cause I don't really...

Bought a typical red laser "pointer" from Ebay, because I didn't have one. Received it promptly, but there is something (more than usual) wrong with the junk 18650 battery or charger. When plugged in, the single cell charger glows a steady green. When the battery is installed, the charger...

I already have a generic 303 Ebay green laser pointer that I am reasonably happy with. I have been looking for an extra one, with perhaps a little extra power for a more pronounced beam. Looking at the Sanwu site, the similar looking 301 laser are sold as either < 50 mw or < 100 mw. That...

Can you share a link to the seller, or is that not allowed? I am sort of looking for something that someone has already tested that doesn't leak IR that doesn't cost a bunch.

Is this clear plastic object over the diode a lens or an IR filter? Searched Google, but none of the examples looked exactly like this. Thanks for input. Also going to try to attach pic of the label on my 303. No questions about it, just thought that it was a curious layout for a warning, and...