good distinction
for working on a car during the day, for more than a few minutes, AAA is the wrong tool for the job. 100lumens during the day is not very bright. For daytime car work, 200 lumens is better, that is AA or CR123 territory, or LiIon
otoh, for uses below 100 lumens, especially below 40 lumens, the AAA is sufficient, and imo excellent due to its small size and weight.
I noticed the change to NoPWM in October 2015. At the same time the ring around the LED appeared, so I use that as a guide.
the light with PWM on the left is from June 2015, the light on the right with NoPWM is from October 2015, coinciding with the ring around the LED. You can be sure that if you see a ring around the LED, the light has the new NoPWM circuit. (except for Massdrop advertisements, that use outdated photos from the old PWM based models, but actually ship models with the ring around the LED)
here is a beam shot of those two lights on Medium. You can see the PWM creates scan lines on my photos, which is one reason I avoid PWM.
Much appreciated info Jon! Your information was spot on! My Cu Tool was purchased in Dec. while my Al Tool was purchased in Oct. As shown, the Cu has the ring and the Al does not.
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