Originally Posted by
Ziemas
A few weeks, but they would definetlyy turn off on the cobblestones after only a few seconds if they were defective. They are huge a brutal stones.
Before I used them on my bike I also banged the billy hell out of them, and they are solid.
This post might be of use to you.
Thanks for finding that older post. I remembered MechBgon had some new ones. I P.M. ed him a couple of days ago. The new ones did the same thing after a while. So he finally went back to Superflash.
I can't imaging anythying worse for a light than cobblestones. That's probably the ultimate test. But since this is a high volume product, they may not all be the same. I did take mine today on my bumpiest road bike on some bad roads with no problems so far. If I have any problems I'll post about it. I rode with 10 others today, most of the time there was a recumbent one bike back from me, his head was in line with the light. He kept teasing me about damaging his eyes. I like the way this light works during the day! My friend on the recumbent not so much.
His head is about the same height as a driver in most typical sedans. That's encouraging.
He bought one too.