Gransee
Flashlight Enthusiast
We have verified that about 1 out of 6 (17%) of the newer Arc4s pulsate at about 1hz when level 1 is selected. We detected the problem this morning and have begun work on possible solutions.
Some rev2 and some rev1 units could be affected. The symptom seems to occur when level 1 is selected and the light is used at that setting for longer than a few seconds. The change in brightness is slight in some cases and hard to see while other cases are more pronounced.
So far, we have received 3 complaints out of hundreds of units shipped but I assume that more units than this are effected. If the light is used as recommend (primary set at about level 4), some people may not see it. However, the lights are still flawed and should be replaced.
The pulsating is only visible at level 1. Pulsating at other levels has not been observed.
The pulsating occurs within a matter of seconds of the light being turned on. Heat, run time, battery type does not change the effect.
We have added yet another test to our QC procedure. I again apologize for releasing a defective product.
The Arc4 is a radical development in flashlight technology. It was first released earlier this year. About a month ago, we made a major revision to the design. This has further complicated our ability to account for every possible variation in performance.
But enough excuses, the Arc4 has a lifetime warranty. If your Arc4 is effected in any way by any kind of defect, please let us replace it. For warranty service please email [email protected]
Thank you.
Peter Gransee
Arc Flashlight
Some rev2 and some rev1 units could be affected. The symptom seems to occur when level 1 is selected and the light is used at that setting for longer than a few seconds. The change in brightness is slight in some cases and hard to see while other cases are more pronounced.
So far, we have received 3 complaints out of hundreds of units shipped but I assume that more units than this are effected. If the light is used as recommend (primary set at about level 4), some people may not see it. However, the lights are still flawed and should be replaced.
The pulsating is only visible at level 1. Pulsating at other levels has not been observed.
The pulsating occurs within a matter of seconds of the light being turned on. Heat, run time, battery type does not change the effect.
We have added yet another test to our QC procedure. I again apologize for releasing a defective product.
The Arc4 is a radical development in flashlight technology. It was first released earlier this year. About a month ago, we made a major revision to the design. This has further complicated our ability to account for every possible variation in performance.
But enough excuses, the Arc4 has a lifetime warranty. If your Arc4 is effected in any way by any kind of defect, please let us replace it. For warranty service please email [email protected]
Thank you.
Peter Gransee
Arc Flashlight