I want a powerful 18650 laser on a budget

42 posts / 0 new
Last post

Pages

Speedsix
Offline
Last seen: 1 year 1 week ago
Joined: 12/04/2011 - 14:49
Posts: 1671
Location: San Diego, California
I want a powerful 18650 laser on a budget

It will just be for fun no real purpose. I am asking this here because I know many people who are into list also like lasers.

I’m looking for the most powerful (probably green) laser than takes 18650s for $40 or there a bouts. Less will work if it is powerful. I would like to be able to do some of the cool things like pop balloons and burn stuff. I have a green pen laser but it is not powerful enough to burn anything.

scaru
scaru's picture
Offline
Last seen: 4 years 9 months ago
Joined: 03/22/2012 - 13:36
Posts: 6946
Location: Virginia

I have a "200mw" green laser coming from the wallbuys sale. I think it runs off 18650s, but it wasn't specified. Other than that no experience with lasers. Wink

Speedsix
Offline
Last seen: 1 year 1 week ago
Joined: 12/04/2011 - 14:49
Posts: 1671
Location: San Diego, California
scaru wrote:

I have a “200mw” green laser coming from the wallbuys sale. I think it runs off 18650s, but it wasn’t specified. Other than that no experience with lasers. Wink

I know, I saw you snapped one up. I was going to buy one from that sale but I was worried it would get confiscated by customs and mess with the rest of my order. I tried to make a separate order for one but time ran out on that deal for me.

When you get it, let us know how it compares to other green lasers. Specifically, what if anything will it burn.

atbglenn
atbglenn's picture
Offline
Last seen: 2 years 2 months ago
Joined: 07/29/2011 - 12:04
Posts: 5766
Location: Long Island, New York

scaru wrote:

I have a "200mw" green laser coming from the wallbuys sale. I think it runs off 18650s, but it wasn't specified. Other than that no experience with lasers. Wink

Can a 200mw laser burn stuff? 

 

Scaru, I was just reading the notes. Important info!

Please remove the battery when not in use , put the child is not easy to get a place !    lol!!

Boycott Nike

scaru
scaru's picture
Offline
Last seen: 4 years 9 months ago
Joined: 03/22/2012 - 13:36
Posts: 6946
Location: Virginia

atbglenn wrote:

scaru wrote:

I have a "200mw" green laser coming from the wallbuys sale. I think it runs off 18650s, but it wasn't specified. Other than that no experience with lasers. Wink

Can a 200mw laser burn stuff? 

Scaru, I was just reading the notes. Important info!

Please remove the battery when not in use , put the child is not easy to get a place !    lol!!

think so. I know it is extremely dangerous and can cause blindness so I'm gonna be extra careful. 

scaru
scaru's picture
Offline
Last seen: 4 years 9 months ago
Joined: 03/22/2012 - 13:36
Posts: 6946
Location: Virginia

NZ Shooter wrote:
atbglenn wrote:
Can a 200mw laser burn stuff?
A 50mW laser can and will pop your ear drum. Heat can be felt in the ear, if it is pointed into it. And if left blazing away, can cause permanent hearing loss. I would shudder to think how 200mW would affect the body. There have been instances in NZ of wanks using green lasers to shine into the cockpit of overhead aircraft, intentionally blinding pilots. Real bloody smart, if you want a plane to fall on your head.

Ok, I will refrain from pointing my laser into my ear...

texaspyro
Offline
Last seen: 2 years 2 months ago
Joined: 04/29/2011 - 12:43
Posts: 4593
scaru wrote:
I will refrain from pointing my laser into my ear…

Yes please do, especially when there so many other fun orifices that you can fry. J)

Nope586
Offline
Last seen: 3 years 5 months ago
Joined: 06/25/2012 - 12:31
Posts: 124
Location: Halifax, Nova Scotia, Canada

http://lazerer.com/ is where I brought all 3 of my non-homemade lasers. They will measure your laser before they ship it out and guarantee the power if you want.

I have a 50mW 532nm green, a 200mW 650nm red and a 1000mW 445nm blue.

I often find myself using the green even though it is the lowest power (50mW is a little weak for burning things though), the red just isn’t that visible to the eye even though it can burn stuff pretty well, and the blue is just so dangerous it’s almost not fun to play with, it is by far the most impressive though, it will also burn anything, like.. anything.

The 50mW green is about half as visible as the 1000mW blue in air. The green lasers are all DPSS lasers as well so they have a really nice thin beam with great divergence, the big powerful blues (445’s) are all multi-mode diodes so they need a nice glass lens just to get the beam to not be a train wreck, beam will still be fat though.

I hope to have a 500mW+ green in the future, I can’t imagine what they must look like in real life. This thing would be absolutely sick.

WastedNihilist
WastedNihilist's picture
Offline
Last seen: 1 month 1 week ago
Joined: 08/02/2011 - 14:30
Posts: 623
Location: San Bernardino

I’m also looking for a laser. Probably green. How powerful can I get before it becomes dangerous. I would like to be able to play with pets and show it off a little.

scaru
scaru's picture
Offline
Last seen: 4 years 9 months ago
Joined: 03/22/2012 - 13:36
Posts: 6946
Location: Virginia

Even a 5mw green one is dangerous...

Flomotion
Flomotion's picture
Offline
Last seen: 3 months 3 weeks ago
Joined: 12/02/2012 - 15:13
Posts: 1405
Location: Pacific Northwest

Before I came here, I am also Flomotion on laserpointerforums and photonlexicon. I have a WL 1 watt 445nm, a 400mw 405nm, a 250mw 650nm, and a 450mw 532nm. They will mess you up, unless you have eye protection. Any reflection directly back into your eyes can immediately burn holes in your retina. My greenie will go straight up for over 100 miles. Even a 50mw can temporary blind a pilot on a direct hit. It is a federal offense to shine a laser at any aircraft, and as the green ones can go for miles, it is possible to hit aircraft and not be aware of it. If you want lasers, go here:

http://o-like.com/

Wear Eye Protection, or go blind…really…

Flomotion

peterloron
peterloron's picture
Offline
Last seen: 2 months 2 weeks ago
Joined: 11/12/2012 - 14:59
Posts: 122
Location: WA, US, Earth

With remaining eye…do not look into laser. Reflections can easily cause damage as well.

Yeah, get safety glasses with the appropriate lenses for whatever wavelength laser you’re working with. Yes, that may mean you need several pairs. And you’ll need them for whomever else is standing around.

Cheap 5mW lasers are dazzling to the eye, but I suspect most of them do not have the optics to generate irradiance high enough to cause permanent damage. Remember that it is not just the output power that is a factor, it is also how much area that power is spread over. You can have a very powerful laser, but if the beam is diffuse, you won’t cook anything.

If you want the numbers, this is an excellent primer on the subject:

http://spie.org/Documents/Publications/00%20STEP%20Module%2002.pdf

Rezolution
Rezolution's picture
Offline
Last seen: 7 months 2 weeks ago
Joined: 10/04/2011 - 13:57
Posts: 545
Location: Pennsylvania

All of these are pretty nice for around $40:
http://www.lazerpoint.com/sc-green-laser-pointers?minPrice=38&maxPrice=4...

I have this one:
http://www.lazerpoint.com/p-ultrafire-200mw-1000m-532nm-green-laser-poin...

It says 18650 but after they mod the flashlight body, it only will accept a 16340 or 18350.

That Ninja Guy
That Ninja Guy's picture
Offline
Last seen: 6 months 3 weeks ago
Joined: 11/17/2012 - 16:39
Posts: 607
Location: America's High Five, USA, Earth

I would like to second Lazerer. I bought my purple 100mW(~$45) from there and it is great.
Chances are that you aren’t going to be able to burn anything if you can’t focus the beam.
Also, for everyone in the US(unless things have changed) in order to legally purchase/own/import/whatever, anything over 5mW needs to have a safety lockout key.

EDIT
Forgot to add that my laser runs on either 1×16340 or 1×18650.

Flomotion
Flomotion's picture
Offline
Last seen: 3 months 3 weeks ago
Joined: 12/02/2012 - 15:13
Posts: 1405
Location: Pacific Northwest

As in the above post, I am a laser convert to flashlights. I have been in lasers for many years, built and bought many. I would like to recommend http://o-like.com/ because, like Chinese lumens, many sellers lie about the true mw power. Example, you order a 200 mw green, and it is actually about 30 mw. So you learn the hard way. o-like tests the units before sale, and there are aways overspec. Example if you order a 400 mw 405nm, it could be 450 to 480 mw. So, just believe me, after many errors, before learning about o-like, Suzie at o-like will treat you right, and the laser will be overspec…

Flomotion

DarkSide
DarkSide's picture
Offline
Last seen: 3 years 12 months ago
Joined: 06/04/2012 - 01:50
Posts: 792
Location: NYC

+1 Lazerez. All custom lasers and a super nice fella!

 

If someones looking for a 532nm that LPM's at +830mW shoot me a PM....I may have a 250mW 532nm as well

 

 

That Ninja Guy wrote:
I would like to second *Lazerer*. I bought my purple 100mW(~$45) from there and it is great. Chances are that you aren't going to be able to burn anything if you can't focus the beam. Also, for everyone in the US(unless things have changed) in order to legally purchase/own/import/whatever, anything over *5mW* needs to have a safety lockout key. EDIT Forgot to add that my laser runs on either 1x16340 or 1x18650.

 


That Ninja Guy
That Ninja Guy's picture
Offline
Last seen: 6 months 3 weeks ago
Joined: 11/17/2012 - 16:39
Posts: 607
Location: America's High Five, USA, Earth

DarkSide wrote:

+1 Lazerez. All custom lasers and a super nice fella!

 

If someones looking for a 532nm that LPM’s at +830mW shoot me a PM….I may have a 250mW 532nm as well

 

 

That Ninja Guy wrote:
I would like to second Lazerer. I bought my purple 100mW(~$45) from there and it is great. Chances are that you aren’t going to be able to burn anything if you can’t focus the beam. Also, for everyone in the US(unless things have changed) in order to legally purchase/own/import/whatever, anything over 5mW needs to have a safety lockout key. EDIT Forgot to add that my laser runs on either 1×16340 or 1×18650.

I was going to PM you about the 250mW, but I can’t afford to lose any body parts to the wife lol. :bigsmile:
Ouchyfoot
Ouchyfoot's picture
Offline
Last seen: 6 months 2 weeks ago
Joined: 09/01/2012 - 06:15
Posts: 5089
Location: Canada

Flomotion wrote:
As in the above post, I am a laser convert to flashlights. I have been in lasers for many years, built and bought many. I would like to recommend http://o-like.com/ because, like Chinese lumens, many sellers lie about the true mw power. Example, you order a 200 mw green, and it is actually about 30 mw. So you learn the hard way. o-like tests the units before sale, and there are aways overspec. Example if you order a 400 mw 405nm, it could be 450 to 480 mw. So, just believe me, after many errors, before learning about o-like, Suzie at o-like will treat you right, and the laser will be overspec…

+1 Wink
mgscheue
Offline
Last seen: 6 years 10 months ago
Joined: 10/20/2012 - 11:58
Posts: 111
Location: Michigan

I was tempted to get one during the Wallbuys sale but I’ve used lasers in lab settings and decided the idea of using a > 5 mW laser essentially as a toy frightens me.

NightCrawl
Offline
Last seen: 5 years 5 months ago
Joined: 01/22/2012 - 08:20
Posts: 3071
Location: Karlsruhe, Germany

If I ever met someone carrying such a strong laser, I'd immediately smack them in the face.

Nope586
Offline
Last seen: 3 years 5 months ago
Joined: 06/25/2012 - 12:31
Posts: 124
Location: Halifax, Nova Scotia, Canada
scaru wrote:

Even a 5mw green one is dangerous…

Another thing to remember about greens is being DPSS they almost always produce some unrated amount of IR, often at a higher mw then the actual green laser. The higher end greens will sometimes have an IR filter to block the IR but many of the cheap 5mw-50mw greens do not, so be very careful with them.

Also never look into a green laser that appears to be malfunctioning (no light), the crystal in the DPSS module can become mis-aligned and cause the laser to stop producing visible light but still be producing very high levels of dangerous IR light, you could fry your retina and not even know it until it’s too late.

The reds, blues and violets are not so much of a worry (except for the fact they can still blind you) as they are all just diode lasers and won’t produce IR (unless you have an IR laser of course :p).

FlashPilot
FlashPilot's picture
Offline
Last seen: 12 hours 3 min ago
Joined: 05/10/2010 - 16:07
Posts: 4801
Location: USA
scaru wrote:

I have a “200mw” green laser coming from the wallbuys sale. I think it runs off 18650s, but it wasn’t specified. Other than that no experience with lasers. Wink

Let us know if it gets through customs. The 5mw limit has been enforced in the US.

Some reading:
http://www.fda.gov/Radiation-EmittingProducts/RadiationEmittingProductsa...

scaru
scaru's picture
Offline
Last seen: 4 years 9 months ago
Joined: 03/22/2012 - 13:36
Posts: 6946
Location: Virginia

FlashPilot wrote:
scaru wrote:

I have a "200mw" green laser coming from the wallbuys sale. I think it runs off 18650s, but it wasn't specified. Other than that no experience with lasers. Wink

Let us know if it gets through customs. The 5mw limit has been enforced in the US. Some reading: http://www.fda.gov/Radiation-EmittingProducts/RadiationEmittingProductsa...

My hope is they won't notice it with other things. Wink I mean since it doesn't have a battery in it, then it must qualify as a part not a completed laser. Silly

FlashPilot
FlashPilot's picture
Offline
Last seen: 12 hours 3 min ago
Joined: 05/10/2010 - 16:07
Posts: 4801
Location: USA
scaru wrote:

FlashPilot wrote:
scaru wrote:

I have a “200mw” green laser coming from the wallbuys sale. I think it runs off 18650s, but it wasn’t specified. Other than that no experience with lasers. Wink

Let us know if it gets through customs. The 5mw limit has been enforced in the US. Some reading: http://www.fda.gov/Radiation-EmittingProducts/RadiationEmittingProductsa...

My hope is they won’t notice it with other things. Wink I mean since it doesn’t have a battery in it, then it must qualify as a part not a completed laser. Silly

My fingers are crossed for you! Good luck.

mizjif
mizjif's picture
Offline
Last seen: 6 hours 26 min ago
Joined: 09/23/2010 - 03:13
Posts: 1981
Location: Winnipeg, MB, Canada

Just got the O-like power rock 100mw green in the mail today!

Best laser I’ve purchased, great great quality, and from reviews, these lasers come over spec. It is water proof too and I ordered the filters for it which make it a really entertaining laser!

Came with a holster, battery and charger and looks like a sunwayman. Clicky has a great strong feel to it too.

Cant say enough good things about it.

Bigtime happy customer for o-like.com!

Richwouldnt
Richwouldnt's picture
Offline
Last seen: 6 months 3 weeks ago
Joined: 05/24/2014 - 00:22
Posts: 1354
Location: Reno, NV, USA, Terra, Sol, Milky Way, Known Universe

A revival

I have three 18650 battery laser pointers coming from FastTech and wondered if any member knows about them and whether they have proper IR filters installed. Also if any where near claimed output. I probably should have asked before ordering but I gave into temptation when I saw them listed. I have had a 30 mW green two AAA laser pointer for years and have not blinded anyone. Originally bought for use during astronomy lectures under night skies for pointing out constellations and astronomical objects. I do have laser safety glasses on the way too.

https://www.fasttech.com/product/1591400 Green 200 mW.

https://www.fasttech.com/product/1591403 Red 200 mW.

https://www.fasttech.com/product/1591404 405nm Blue Violet 100 mW.

If the lasers do not have a proper filter I figure that I can possibly machine an adapter for the Baader ir and uv cut filter, the 1.25” size.

http://www.amazon.com/Baader-Planetarium-Telescope-Filter-FUVIR-1/dp/B004QCF9ZY/ref=sr_1_8?ie=UTF8&qid=1417240933&sr=8-8&keywords=baader+filter

Rich Wood
Reno, NV

two¢¢
Offline
Last seen: 2 years 5 months ago
Joined: 08/04/2013 - 16:39
Posts: 61
Location: Texas

This little laser post deals only with SD 30x, as in SD 301, SD 302, SD 303. I have held eight or so, I think all advertised as < 100mw.

A product page typically shows them labeled (for example) ‘SD 303’, but you will likely receive one labeled ‘LASER 303’. Sometimes they arrive without keys, so I have made a few fairly easily. I’ve never seen one with O-rings. There is some variance in the brightness, but I consider them all quite powerful. Less than half a second to burn tiny holes through black or grey polyethylene grocery bags. Not a child’s toy, they should be treated as dangerous – I expect one would quickly damage an eye. Whoever points them at animals is an anus. Not powerful enough to do anything useful like cut pipe; far too powerful for a classroom pointer. I don’t know any practical use.

That said, I claim them among the best money I’ve ever spent. Handled CAREFULLY, they can amaze and entertain a group for ten whole minutes. Maybe twenty minutes if there’s beer.

The main tube is threaded two sections, so you can use 1xCR123A primary, or 1×18650. However otherwise decribed, the button side switch is momentary on, which is good for safety. The laser stays on while you press the button, but if you fumble or drop it, the laser turns off. I imagine minimal heat-sinking, so have never kept one on for a full minute. A knob on the business end can be unscrewed/extended to defocus/spread the beam up to 2 to 3 degrees to make a spot. Green appears the most luminous, then red, then blue.

For now, I’m convinced the model designators are like this:

301 = knurled tube
302 = smooth tube
303 = 301 plus extra knob on the end, which is a ‘filter’

I recommend the 303. Removing the ‘filter’ makes a 301. Leaving it in place makes things safer around people or indoors. Variously described, this ‘disco filter’ attachment spreads a broad field of four zillion small images – the best is simply some kind of dot or star – others available are hearts, smiley faces, etc. Rotating the filter makes the images coalesce into half a zillion brighter ones. Maybe useless except as huge entertainment. Wait, I mean for the kids.

So far, all the less than $10 ones seem out of the same grab bag as the more expensive. I’m still waiting for my first buy of green, red, blue from GearBest. $7.64 each.

I will not trust any notion that my cheap lasers are blocking whatever IR component.

Anyway, the longer 303 fits well in this pouch

Livinloud
Livinloud's picture
Offline
Last seen: 6 months 3 weeks ago
Joined: 06/03/2013 - 21:03
Posts: 1268
Location: Mass

Definitely NO IR filter in any of the cheap lasers (under $200). You also will have probably 100-200mW of power however about 50%+ is pure IR so once you filter it you are left with a cheap 40-100mW 532nm laser.

650 and 405 dont produce any IR is no need to filter those at all. 532nm is made purely from a DPSS IR process. Its hit or miss on their actual power. I know some people get them over spec but majority are way under spec and just junk. Dont be afraid if they die a few months into using them, thats the name of the game with cheap lasers. Also about 50/50 chance they will be DOA due to shipping mishandling. Lasers are very fragile and just dropping them can kill a diode like thats

LPF Member: Livinloud
Budget flashlight enthusiast turned into lumen freak

Halo...
Halo...'s picture
Offline
Last seen: 5 years 4 weeks ago
Joined: 12/15/2011 - 02:39
Posts: 3304
Location: Halo island

Richwouldnt, very unlikely that it has an IR filter, ones that do have a filter will mention it. Only green produces IR. There is no UV.

405nm may look relatively dim but it is powerful and can easily do vision damage if you get a false sense of safety due to the brightness. Even if it is the same mW power as others the 405nm color is just less visible to our eyes.
Of course keep them out of reach of children or anyone who might act like children.

IR filters suitable for green lasers

Livinloud
Livinloud's picture
Offline
Last seen: 6 months 3 weeks ago
Joined: 06/03/2013 - 21:03
Posts: 1268
Location: Mass

My second batch of advice is to not listen to a word “two €€” says. That extra knob that is a “filter” farthest thing from the truth. He doesnt know what he is talking about and if you do want to talk to people who do know lasers then go join us on laserpointerforums.com

LPF Member: Livinloud
Budget flashlight enthusiast turned into lumen freak

two¢¢
Offline
Last seen: 2 years 5 months ago
Joined: 08/04/2013 - 16:39
Posts: 61
Location: Texas

Eeek! Filter truth! Thanks, MileyLoud! I improperly put filter in quotes, referring to the many instances of product descriptions using that. I had forgotten that the quote marks indicate me as the authoring source. Good catch! And I should have included a thorough lecture on etched glass counter-rotating diffraction gratings – I’m working on that now.

I know it sounds crazy, but these are sometimes called kaleidoscopes, even on the erudite laserpointerforums. Why would anyone use such an informal, misleading term for a device this serious? I respect that you’ve also set those farthest untruths right. It shows that you are ‘not’ just an hysterical doofus, and I will surely believe whatever you say.

I trust your boyfriend gratefully hears your corrections while driving, dining, picking out clothes, etc.

Thanks for being you, MileyLoud!

Pages