Hello Zapu, I think it's awesome that you take the time to do such in depth testing! Not all of us have access to a L.P.M. And it's good to know the power of the reflections off different surfaces. Also someone on another forum was talking about an apparent twist in the beam at different distances. Since it emits a line profile, and passing though corrective optics for collimation, I think that's what makes this phenomenon more visible?
A great review with tips i appear to be having issues with my battery as it sometimes goes full power and other times only for a couple of seconds, ,crap battery ? i have tried others new but cheap ones they are protected and they shutdown high power mode in a second, so better or better and unprotected will work better ? and you didn't mention which way to turn lens to set for fast burn 1/4 turn but which way ..i get 1313 mW when it will hold high power on and not shutdown laser but go for long time on low about 650 mW any ideas re high power cutting out unless the battery is really fully charged driver issue?