Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: I have a brand new bike. What other accessories do I need to make this dynamo light work?
Document: I was quite pleased with this light. Then it failed after only a few hours of use. I believe the only thing broken was the switch but the way the thing is constructed I can not bridge it and so this switch--which I don't need; I have a bottle dynamo--causes me to lose my investment.
It's noticeably brighter than the mag, both in the center and in the &#34;spill area.&#34;Looking at the specs: 6V / 2.4W, I ran the light from a plug-in variable power supply at various settings. I'll probably make myself a 5x AA battery holder eventually, but for now I power it with 4AA NiMh rechargeable batteries because it's convenient and still very bright. If I find a dynamo with suitable output, I may give it a shot.
Perfect starter, backup, extra bike light. If just starting to use dynamo lights, this will give you a good start. Impressive output and focal length for the price.
After doing some extensive research on the Internet, I was convinced that I had to spend over $200 to get myself a decent LED dynamo headlight for my new Brompton. That was until I accidentally came across Merchant-Shapiro's review about this unknown Avenir Dynamo 3 watt headlight. Since it wasn't so expensive, I've decide to take a chance and ordered one.
Great light for a bike the only issue that I have with the light is that it does not have a power source that come with it and the description does not state that so I hooked it up to a 12v battery and it works fine.
Popped this on my bike in combination with the Sturmey Archer X-FDD generator hub, and I have no complaints about the light output. Indeed, I can ride full speed in the dark and see my way.
Better than the Planet Bike unit in that it has a &#34;stand light&#34;, and I like this mounting much better if you have a front rack/basket. The mount could be a bit sturdier. The light pattern is better than the Planet Bike as well.
Very nice headlight at a very nice price. I give it four out of five stars only because it's beam is not quite as luxurious as the Busch & Muller IQ Cyo on my other bike. Avenir's beam seems less smooth, and perhaps less wide. Of course, the B&M; cost three times what the Avenir did!This Avenir light puts far more useful light on the road than any of the flashlight-type headlights.
It puts the light where it needs to go. (I wish all bike headlight manufacturers would realize that a road beam needs to be different than a flashlight beam. )It's got a soft on-off switch that shuts off the light if needed, including the "stand light" (which stays on when you stop riding, like at a traffic light). I'm powering this from a very low-tech, almost antique Union sidewall generator, not from a fancy hub generator. It works very well.
For me this is certainly the best light I have ever had. Bright, reliable, easy to install and on top the cheapest on the market. It even includes a little reflector which should keep you visible should your dynamo stop working.
Answer: yes