Last weekend our bike club had permission to do a night ride on The Tunnel Hill Road (Rails to Trails). Unfortunely it was in the low 50s and only 4 people beside me showed up and they all were wearing shorts. The club Pres and his wife said they were too cold and that their Trek double C light wasn't bright enough so they weren't riding. The other two were man and wife and he had 2 Trek lights on his bike and she had 1 Trek on hers. We got about 5 miles into a 20 mile round trip when we noticed her light was out. We stopped and he fiddled with it a while and next thing we knew one of his lights went out. He messed with that one awhile and 'poof' his 2nd light went out. He'd get one working and another would go out until all 3 were dead. Fairly new lights with new batteries he said and they were not dim when they came on. Strangest thing I ever seen. He had a old generator light and she rode beside me and we high tailed it home before something else went wrong. Bad night for Treks?

I tried a set of Trek lights (can't remember model, but used AAs) and they failed. The shop gave me another set, and they failed, too.

Finally ended up with the Road Toad Combo. They work.

I've been using Trek lights every day for the past 8 months With no problems.Two head lights and five disco tail lights. Maybe you had a UFO flying over head.

You would think that club riders would know that it gets cold at night, and there is stuff called "clothes" to keep you insulated. I believe they were invented by the Neanderthals about 100,000 years ago.

I also had two sets of Trek lights fail. Following is a review I wrote on my webpage:

"Trek Celestial Light Set
Reviewed on Nov.23, 2001
This set contains one Celestial Headlight, and a Disco 5 LED Tail Light, both with batteries. I purchased this light set for biking back and forth to school when I have night classes. However, I didn't even get to use the headlight, because it was broken before I had a chance! At first glance, I was very impressed with the attachment system that Trek had designed to mount the headlight to the bike. However, this attachment broke (in two places) before I even got to use the light! It appears to be made of very cheap stiff plastic, and it just snapped for no reason! Also, it's been sitting here on my computer desk so I remember to take it back and get a refund. Since it's sitting here, I tend to play with it when I'm bored. I've managed to break the plastic a third time, and I didn't abuse it in any way - simply unscrewed the bolt and the plastic around it cracked. Maybe I got a dud...but I doubt it. I can't hardly comment on the rest of the light (ie. brightness, battery life, etc.) since I never got to use it. As for the taillight, it seems a little bit better. Again, the mounting system is interesting. The taillight has a softer plastic band that attaches around the seatpost, and a screw type mechanism which tightens the stap down. Seems to work well. The light has two modes - solid light, and a flashing mode. I tend to use the flashing mode, since I feel it will get attention better than a solid light. Again, I haven't had this for long, so can't comment on it more than that, and since I plan on taking the set back for a refund, this is likely all the info I'll have on it. For $35 I think you should be able to get a better light set. Two thumbs down on this one.

Update: November 23, 2001: I took the light set back to the store where I purchased it, and in return got a brand new set. I figured it'd be worth a try, just in case I did get a dud. When I got the set home, I put the batteries into the rear flashing light, and it didn't work! So, I tried everything I could possibly think of, and it still wouldn't work. However, the front light worked fine (just like last time) and the attachment didn't break (but of course I only had it out of the box for an hour or so, and it didn't leave the couch.) So... my overall opinion of this is that the quality control must be non-existant in order for me to have had two set of lights which didn't work. I would say three thumbs down on this if I could. Buyer beware I suppose. Don't assume that because Trek makes good bikes that they make good accessories (of course they probably don't even make them at all - I'm sure they just slap their name on a piece of junk)"

Just my two cents...

I used a Zefal 2.6 watt that I ordered on closeout on Nashbar. I just took it out of the box,slapped the new batteries in,tested it and went. It was bright enough. But the 3 yellow LEDs are pretty much worthless.

Yes, I had this problem, too. It's the same problem I've just had with my Vistalight Nightstick. Could it be because I continually ride in the rain?

Cateye El 300 GOOD!

My trek lights failed in dry weather. Or out of the box.
There was no apparent reason for them to fail.

My road toad lights have worked under similar conditions (and worse).

The Trek lights sucked. My Trek bikes are just fine, but the lights sucked.

Sounds like I lucked out with my Trek lights.