My brother bought me a blue laser 1000mW - wavelenght 450nm
I go to balcony and light up the sky. One day later, i wanted to show laser to my friend but laser did not work. I tried to charge batteries for 1 day. After i charge it, again laser did not work. I bought new batteries, same (UltraFire 16340 - 1200mAh 3.6V Li-ON, when battery came, i again go to balcony and light up the sky. And after 10 minutes of lighting, laser stop working. Yesterday, I bought new batteries but with higher voltage 3.7V instead of 3.6V.
Again same problem, 10minutes of fun but after stop working again. Meanwhile of this i trying to charge batteries maybe 10 times with no result.
Can someone help me please ? Its expensive laser. :undecided: