Got my hands on a sufficiently powerful regulated DC power supply so I could really measure everything. My SLII pulled 1.16A @ 8.4V. Output peaked at 2,135mW. I feel a little pain for my LaserBee... Thanks again, Garoq

That sounds about right, at 85% driver efficiency that calculates to 1.80A to the diode at 4.6V.

I love my SLI w/ Extended Focus Ring.

I can focus to a tight beam about 12 feet on my wall, then pop ballons floating around like a carnival shootout. Focused like this I can still burn though a piece of paper at 8-10 feet.
This long distance focus is great for pointing at stars, nice tight, straight beam. VERY BRIGHT! Everyone around me can see the beam with no ploblem.

If I focus the beam closer to the device it burns like a surgeons knife. I like to blow smoke into the beam and focus, I can see the tight beam(focus point) travel up and down the beam as I focus. Using it like this, it is important to say, YOU MUST WEAR YOUR GOGGLES!!

I can engrave things like I am writing with a pencil. It burns black surfaces instantly, but still burns other colored items, even white if I hold it steady long enough ( less than 1 min.)

None of these tests required ontime exceeding duty cycle of 1 min. on 1 min. off. It is hard to stick to this because it all so much fun. Most things burned or started to smoke with seconds if focused right.

I can't stress enough, any close up burning, engraving, lighting cigarettes, you MUST wear goggles.


I have not burnt my fingers once with the Extended Focus Ring.
I never did test the standard focus ring. I think I see what the results would be.....

All laser peformence tests the same, just some very warm finger tips to go with it.





- DW

Back from travel and normal shipping has resumed!

2nd place in the Orange County science fair!
Impressive.

This seems like a very nice deal.
I especially like the "survival" aspect of lasers. I wonder the regularity of lasers used in this application.

Well it was a big deal back then.

I don't know how often the lasers are used in this application, but we have quite a few customers who are buying them for similar reasons.

what is the difference between this laser that this whole thread is about and this laser Survival Laser I 445nm Parts Bundle w/Accessories & Rechargeable Batteries ?
are they the same?

This deal does not include the goggles or holster. It is only for LPF members.

so it is all completly same except goggles and holster?
does this bundle also include that springy thing for focus ?
and would it be cheaper to order this bundle + eagle pair goggles or to buy the other bundle already with the goggles included?

Pretty much.

Yes it includes the lens spring. I think this offer is a little cheaper with the goggles than the SL-001PBAR w/LPF discount, but remember you don't get the holster.

Bump.

This popular bundle is still available.

Just tested mine today and got 1.238 W on the LaserBee A. It lights paper on fire with ease. Nice laser. My only drawback is that the beam gets wide a little fast when shooting in the sky, but overall an amazing laser! Thanks.

ts

Thanks for the comments.

Yeah, the divergence on the 445nm diodes is worse than the 405nm, 532nm DPSS and 660nm, but better than the 635nm.