Old 01-31-2012, 11:40 PM #1
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Default CR123 100ma?

hey all,
I recently bought a 1W 445nm Blue laser diode, the driver and barrel and all the goodies to put the thing together. However, i am using two CR123 Li batteries, and when i test the driver with the dummy load, im only getting 100ma when i measure across the resistor, but when i use the circuit im getting 4v across the diode and it is extrememly bright, but not buring unless left on something for about 10 seconds. i am using 4 1N5404 diodes and 2 1N5400 diodes, and a 10W resistor as the dummy load. can anyone help me?


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Old 02-01-2012, 01:21 AM #2
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Default Re: CR123 100ma?

What is the tolerance on your resistor? Did you check the actual resistance of the resistor? Some can be off as much as 10%.
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Old 02-01-2012, 02:03 AM #3
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Default Re: CR123 100ma?

It is a 5%. And as far as measuring it. My meter says 1.0. So its not very accurate? I ordered a 18659 battery the other day,do you thing that will affect it at all or do you think its the driver?
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Old 02-01-2012, 02:25 AM #4
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Default Re: CR123 100ma?

It should be accurate if you're measuring it at 1.0 ohms.

What kind of driver are you using?
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Old 02-01-2012, 02:34 AM #5
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Default Re: CR123 100ma?

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Its this one, I contacted the sell about it and he just told me that its 1000ma out at 4 - 6 volts. And to instead get a 18650 battery. I've been tying to find a driver with the leads already soldered on. But there is so many posts its hard to find one with the info.
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