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cr123a's to power driver?

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Oct 16, 2010
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Im using this 1.8a driver: http://laserpointerforums.com/f39/fs-mohgasm-linear-drivers-68378.html

will 2 cr123a's in series work well to power it? they are 1800mah.
If they don't supply enough power, does anyone know what my expected power output would be to the diode?

im powering a 1.5-2w 445m diode.
thanks

(also if anyone could let me know roughly how long these batteries will run in this setup, that would be great too.)
 
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Use this simple formula to calculate resistance,amps and voltage

A=R/V
R=V/A
V=R*A

V=voltage
A=Amps
R=Resistance

Now by taking the resistance and the amps in the driver itself you can calculate the perfect voltage of the battery for the driver you want to use
 
^Ohm's law doesn't work here. A driver is far more complex than a simple resistor.
 
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It should work, but it's a big strain on the batteries and you'll be lucky to get a 20 minute run-time.
 
just a quick check.
to increase duty cycle/run-time one can parallel another "2 CR123 in series" will help rite?
provide size isn't a concern.
 
If you have space for 4 CR123s, then you have space for 2x18650s. 2x18650s will have substantially higher capacity than 4xcr123s.
 
does anyone know what the expected output current would be for 2 cr123a's?
I don't think I want the 1.8a the driver will give out anyways so I can increase the diode lifetime....
 
yes it is designed for 2x lithium batteries in series, the driver will maintain 1.8A's until the batteries voltage fall below the Vout+the drop out voltage.
 


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