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Old 11-05-2013, 10:24 PM #1
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Default Power Clarification

I just recently built a 445nm with an m140 diode. I'm using a 1.5amp driver and it was really incredible! But now two days later, I feel like its not as bright as it used to be. My friend could see it from his house, now he can't? I don't recall anything going wrong. Is there anything to look for, or any similiar situations?

C6 Copper Heatsink. 2 Ultrafire batteries 16340 rechargable, 3 Element Lens.

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Old 11-05-2013, 10:38 PM #2
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Default Re: Power Clarification

Have you charged your batteries? After 2 days at such a high amperage, crappy batteries will need to be recharged pretty regularly.
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405nm BULLET LASER 270mW
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Old 11-05-2013, 10:40 PM #3
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Default Re: Power Clarification

Oh yes, I have 4 of them and a DMM, right now they are at 3.95v. The first thing I did was charge them but I'm still not feeling it. I bought two 18650's just waiting on the extension tube.

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Old 11-06-2013, 01:09 AM #4
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Default Re: Power Clarification

I have exactly the same laser, you can see it here: Assembled a M140 in a C6 (pic heavy) It is very powerful but I have found that the batteries only last a few minutes before there is a power drop and they need recharging. Also be sure your lens is properly focused. If its not the batteries or the lens out of focus then something could be wrong but its likely the batteries.

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Old 11-06-2013, 01:12 AM #5
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Default Re: Power Clarification

Quote:
Originally Posted by Pi R Squared View Post
I have exactly the same laser, you can see it here: Assembled a M140 in a C6 (pic heavy) It is very powerful but I have found that the batteries only last a few minutes before there is a power drop and they need recharging. Also be sure your lens is properly focused. If its not the batteries or the lens out of focus then something could be wrong but its likely the batteries.

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Old 11-06-2013, 01:24 AM #6
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Default Re: Power Clarification

That's great, I am glad I could help. I just recently did another one a 9mm here: Assembled a 445nm 9mm in a Stainless steel host (pic heavy) I am hoping it will help a few people learn how to build a laser. I hope to do another one but I don't know how soon I can do it. Best of luck with your laser.

Alan
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Keychain 650nm <5mW
Quartet 4-in-1 630-680nm <1mW

AtlasNova 635nm <5mW
MillionAccessories 532nm <5mW broken
M462 462nm one of a kind (in progress)
PLTB450B 450nm 1913mW G2 lens
PL520 520nm 82mW acrylic lens
S06J 12X 405nm 590mW G2 lens
C6 M140 445nm 1.5W 3 element lens
9mm 445nm with G2 lens in a stainless steel host
Radiant Electronics X4 3.7W Laser Power Meter


Everyone please post here: Countries of LPF. Where are you? <link>
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