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Old 08-06-2011, 07:27 PM #1
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Unhappy HELP! 18650 batterie problem

HI guys, I have finished building my 445nm laser set at 1A yesterday. Everything concerning the laser itself is fine but I found that it sometimes wouldn't work when the switch at the back was fully screwed in. I can turn it on only when the switch is screwed halfway in or using any other metal piece...

I first doubted the switch but finally it's in perfect conditions.The batterie measured 3.9V which is perfect but when i tried applying pressure on both ends while measuring the voltage my dmm read between 2 and 2.5 volts.
This is clearly not enough voltage to power my laser!

To solve this, I thought about cutting the spring halfway or buying other batteries(if they're not all the same!)...

Anyone have ever seen this? Sorry, no pics for today camera doesn't feel good right now

Jean-Francois


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270mW 650nm homemade(not tested)
1W 445nm@1A
30mW 532nm cheap ebay "5mW pen" (burns holes trough black trash bags in 5 secs)

yay!
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