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Driver operating voltages

gogoflips123

gogoflips123

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Hello!
I'm very new with lasers so please help out :yh:

For my first "project", I decided to buy a green laser module (this)
and replace the existing module with it. Then I noticed that the existing module runs on a 16340 3.7v battery.
The module I ordered claims to run at 3.0v.
Will the laser be O.K operating at 3.7?
 





It depends on the driver. We can't say it will work 100%.
Some drivers work fine with either 3 or 3.7Volt and others will blow up at 3.7V
The specs says 3.0V and I woun't go beyond that.
There are 16340 cells that have 3.0V. They have a protective pcb that regulate the voltage. Maybe you should buy these cells.
 
Thanks for the reply .
Does anyone know how to test it....without blowing the driver or diode?
 
Maybe if you post some info about the driver (wich IC it uses, photos, a webpage) someone will be able to determine that.
 
Ah...I contacted the seller and he/she said that 3.0 v only...Thanks for the help anyways! :yh:
 
Yes, sorry. I have one of those, don't go over 3V, heats up veeeeery quickly
 
Last edited:
why not 3V? You might not get full power at 2,6
 
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You're right..I should increase it..
I am going to use a 3.9V battery and a diode to reduce it to 3.2V.
Would that be okay?
 
luccax said:
why not 3V? You might not get full power at 2,6
Click to expand...
The diode is something like 1.9V, remember, and they use a very low dropout regulator. I've got a green pen that stays in regulation down to 2.3V.

Many people seem to forget that a cell's voltage is not absolute. Alkalines start at 1.6V and are empty at ~0.8V. NiMH starts at 1.4V and is empty at ~1.1V. Li-Ion starts at 4.2V and is empty at ~2.8V.

Unless your driver can accept all the voltages of the cell's charge state, you're wasting a lot of capacity.
 
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