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Oh I know the feeling- 2 summers ago when I first got into lasers I paid $80 for a ~15mW 532 Wicked Nano. Then I decided to "step it up" to a 100mW 532 from Lazerer for only $60. Aah, "Lazerer" that name rings all sorts of sweet & sour bells. I also dropped $80 on a barely-100mW 445. Mmmm...

The seller says the driver is set at 1.8. I've also seen 1.8 on DTR's page for this diode so I know it's not outrageous, although it's interesting to see such a high draw...the largest I've seen for non-DPSS is about 900mA :)

Thanks for rep. :)

Interesting...I know voltage adds with batteries in series, but it's interesting total capacity doesn't. So two 650mAh 16340s, there's still only a "total" of 650mAh available. That makes runtime only about 21 minutes at 1.8A. It's like my 300mW 532 HL which pulls 1500mA and runs on one 16340...

Looking for a high-power 520. I have a SKYLASERS 532 300mW. Great laser but time to change from DPSS. Found this 520. Nichia NDG700. Questions: 1. Anyone know what host this is? Seen it before. Looks similar diameter to 501B. 501B fits 18350s perfectly. Will this fit 18350s? 2. Drawing 1.8A...

Interesting what people say about 532 vs 520. People say 520 is a more "pure" green. Does "pure" mean more comfortable and agreeable to view? IMO, pure green means lime-green. 520 in photos looks a touch more blue-ish and a cooler, more natural looking green. I think that's why people say...

Sorry if it's an old reply. But yes the green 303's are a great value. I've bought about 7 of them and only had one that really mode hopped. And a name-brand 18650 will give you plenty of run-time. Perfect "everyday" use laser (for people that know safety). Perfect "beater" lasers. The flip-side...

True- I was nervous about anything getting close the diode...my 650nm has the open-can LPC...and I can see the lasing chip, looks like a tiny iridescent grain of sand...I know how sensitive they are :P Luckily the tape is a score for me. My 445 has a closed can but I'm still paranoid about...

Sorry for the triple post. I own 3 501B lasers, 2 have G lenses and 1 has a 3-element. In my experience the lens barrels all need tape and/or a spring. The G's seem less loose but it's still a problem. Lens barrels of course are not a tight fit (understandable since you'd have too much...

I got a roll of teflon tape on Amazon for 45 cents, free shipping. It's gone now from the site. But what a STEAL. Just taped the lens for my 2 501B lasers, it is PERFECT! Focus is so smooth yet firm. Took a while to learn how to wrap the threads but I got my own method down now. I noticed the...

1. So with a 150-250mW single mode 650...is it worth trying the 3 element glass? Will the dot get noticeably smaller? 2. FYI, the "mystery lens" looks like it only has one optic in the barrel. I also noticed wrapping teflon tape on the threads is tough. I got some cheap tape and it easily falls...

I'm glad for you guys & good luck with the sale. Not to get off-topic but I just got a 650/660 open-can LPC diode 501B. The divergence on this thing is unreal low. From 30 feet away the dot is still pinpoint! :)

How would a lower powered single mode diode have more splash? My 1.6W 445 has diode output that covers a backyard but my 650 is a bulging oval that's not even visible after 20 feet...hmm Focused, it's got a super small dot even 25 feet away...but it's got a line on the dot. What do you think a...

Hey DTR! I had a 240mW 520 which had a lens that looked exactly the same. It was a G lens. So makes sense. But...I thought G are used for getting more power while having a worse beam. But this is a lower power (less than 250mW) red. I bought it strictly for low divergence and beam quality...

Just got a single mode 650/660nm laser. Uses one of the open-can LPC diodes. Amazingly tight beam. The divergence is insane low! Using the lens on the left which I don't know what kind it is?....(on the right is a 3 element lens for comparison). Anyone know what kind of lens is on the left? The...

You mean absolutely immediately? On my HL there's about a third of a second delay. The power LED changes instantly from green to red when pressing the button, but the laser doesn't turn on for that third of a second. Yeah I heard a lot of good things about the Sky HL 532. Mine was pretty...

Sweet 445 you have there. I have a 501B 1.6W 445 and it's absolutely awesome, with a 3 element glass lens divergence is 0.86mRad! I know Sky (btb) is good and I just got unlucky, and we'll see how the returns go- but I got burned by them in June with a 300mW 532 HL that only puts out 110mW peak...

How's the difference in burning with 445 vs. 405? I know 405 has more photonic energy due to the lower wavelength? Although 445 is available in much higher powers. I'm thinking 405 diodes have better beam specs also?

Thanks for all your help so far. Higher-power green lasers and I are not working out- :confused: my first two both had super crooked beams, and last month I got a SKYLASERS HL 532 300mW which ended up only peaking about 150mW. Anyone have experience with SKYLASERS returns? Their warranty info is...

Well everyone, need to update you all. AgentMcBaine got the laser, LPM'd it and it's defective, waaaay underspec. Doesn't even hit 120mW. Attached graph he sent me. I didn't have an LPM & was going to get it measured but didn't. But I thought it was on-spec after the warm up though since to me...