Old 10-06-2015, 01:59 PM #17
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Default Re: Battery information you may want to know

Yes, there's information all over the place and if you scroll to the bottom of the original link I provided there are some direct links for more information Thanks for the link.
I haven't even gotten to those other sites myself other than illumination supply.

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Old 11-01-2015, 01:00 AM #18
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Default Re: Battery information you may want to know

Great thread Pete- and TY Larry for all that info..


I was reading about disposal of Lithiums and knew NOT to just throww out w/ the trash..

BUT did not know of a good habit to have- whatever you end up doing its a good thing to cover both ends with tape to help prevent a short and possible fire- I had one make contact in a box of misc. stuff and when I handled it I nearly got a burn-

I hope the USPS will lift the ban-- as other shipping choices are much more expensive.

The ban was started a few months IIRC after a Jumbo Jet crashed and the MANY MANY litiums aboard were considered a possible cause- afaik it was later ruled out BUT the
USPS has not changed their policy.

I wonder if the possible 'dimise' of LightHound was related to Lithiums and the cost to ship..

+7 to the OP when system allows-
+7 to Larry..


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Old 11-01-2015, 09:50 PM #19
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Default Re: Battery information you may want to know

Thanks Len.
I would admit that my lithium cells make me feel just a bit edgy as I own so many the risk is higher for something to go wrong even though I'm careful about how I store and charge them. I own many chargers but won't let any run unless I'm in the room. I also check (with my hand) for any cell warming.
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# of Lasers - ***
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# of Batteries - ***
Wavelengths - 405, 445, 447, 450, 455, 462, 464, 470, 473, 473+, <515, 515, 520, 532, 589, 635, 638, 650, 660, 685, 808, 830, 980
Projector - PD2
O-Like mini red/green to yellow module
Beam Expanders - Dragon Lasers 2x & 5x with universal adapters
LPM's - Modified AW TEC, Custom 6.8W+ Ophir
Datalogger - ARG
Chargers - Ultrafire WF139, (2) Xtar WP2, Nitecore i2, UM20, (3) i4, (2) D4 , Opus BTC-3400 V2.2
Phlatlights - Jayrob PT-54 green 1000lm maglight, PT-54 red project box build, (3) PT-54 red, (2) PT-54 orange (3) PT-121 red, (2) PT-121 blue, (1) PT-121 green project work in progress 5000lm (1) PT-121 green

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Old 11-07-2015, 06:45 PM #20
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Default Re: Battery information you may want to know

I found an interesting battery on ebay which consists of two 18650 batteries in parallel, but in a axial configuration. I'd sure like to find something like that which uses either the 26650 or the 32650 battery but through all my searching, seems they don't exist.

Here's the axial paralleled battery I found:

Sale 1x 3.7v 6000mAh 18650 battery pack in Parallel Li-ion Rechargeable Battery
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Divergence to spot size calc: - 1 mRad is about .057 degrees which expands to be very roughly ~10% the diameter of the moon or sun at their distances.

Divergence Calculator: pseudonomen137's JScript mRad Calculator - Measure your lasers beam dia. at 1 foot & then 20'.

Online calc. to determine spot intensity at different mRad's & powers: http://tinyurl.com/divergence-calculator

Laser Power Density Calculator: Laser Power Density Calculator - Ophir

Build a beam expander to reduce divergence: http://tinyurl.com/BeamExpander

University YAG Project The Professor's Homebuilt Lasers Site - YAG Lasers

YAG Power Calc. Laser Peak Power Calculator - Ophir

Angular Size Calculator; use with diode angle of radiation spec. for lens dia. at FL: Angular Size Calculator

RHD's Calc: http://lsrtools.1apps.com/RelativeBr...&useRaleigh=on

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