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hmmm i didnt look too much, but it seemed i couldnt find any batteries over 3.7 volts. if my laser can support 4.2 then yeeeeees i want one! lol

Im trying to achieve the brightest beam (obviously). On the info page for the laser its says working voltage: DC 3.7-4.2V, im assuming the higher the voltage the stronger the beam will be...? and what is mAh?