The waterproofing of electronics is, of course, paramount for bicycle travel. But keep in mind that even the good stuff can fail. I’ve met ample people with the same light who’ve been cycling the world for years…

Interesting tests! I’d love to one day grab a few of those lights and test them for myself.

I think the Axendo 60 XDAS is a nice option, it is cheap, only €40 and has the perfect beam shape.

Mr. White is old, set in his ways, and very difficult to work with. At 1st I thought there was a cognitive problem with him. I finally realized he is just a disagreeable human being that can’t admit he is wrong. He didn’t build to my specifications, and he used old and scratched components. It was a months-long continuous hassle when and if, he was ever there. After buying a multiple thousand dollar bike with only the best components he shipped a box or parts and overcharged my credit card without my approval. Once I finally got the bike, corrected the pricing (overcharged twice), and finally received all the missing parts, I put him in my rearview mirror. All I can do is give my opinion and not use his services. At the time he was the only U.S. distributor for Tout Terrain Bicycles. Being 1/2 way around the world it was easy for the Roemer Bobbsey Twins (TT Owners) to blow off the situation when I contacted them Multiple times. I think they just didn’t want to deal with Peter White either.

Care to expound on the troubles you experienced in purchasing from this dealer?

Hi Sebastien. I’ve made a mistake E3 Pro II lumens. I was quoting the lumen rating of what looks to be a discontinued product with a different lens. 205lm is correct.

You can splice together the dynamo wires from a USB charger AND light to power both at the same time. But that said, you need to be going pretty fast (30km/h+) to get good use out of both. With a light like the Supernova E3 Pro II you can switch the light off entirely, so that 100% of the power will go towards charging. Most USB chargers don’t have a switch, but they will draw almost zero power with nothing plugged in. This means that putting a switch in the system isn’t all that necessary.

Good advice! I only use helmet lights as a secondary light when mountain biking so that I can look through corners.