I bought a 405nm PL-E Pro 800mW Violet Laser from jet lasers as soon as i got it yesterday. i used two 18650 to test that it was working properly used it for roughly a hour. Turned it off charged batteries to full. This morning i put it all together and turned it on. Not 5 seconds later the beam narrowed to a slit then disappeared compleatly. The lights indicate power but there is no longer a beam