Serfas Thunderbolt Lights
Serfas pretty much makes every bike accessory under the sun, and the Thunderbolt lights aren’t even their first foray into the silicon body bike lights. But their latest offerings, featuring USB rechargeable batteries and micro LED technology, are certainly worth a look.
The first thing you’ll notice is that the Thunderbolts are long and thin. This somewhat unusual shape makes them fit quite well on certain bikes, but not so much on others. For instance, some of my bikes have less than three inches of exposed seatpost. This means that I would need to put the rear Thunderbolt on my seat stay, which isn’t exactly the best option on a small bike since the stays are at a somewhat shallow angle.
As for the front lights my handlebars are often either tight and narrow, crowded by shifters and levers, or shaped with bends that hinder mounting of a wide accessory. The best alternative is to mount it on the fork blade, which is perfectly functional but not really ideal in an urban situation where having a light mounted higher results in better visibility.
Other than those qualms, I give the Thunderbolt lights high marks. For one thing, they’re exceptionally bright considering their modest price (just $45 each). The front light cranks out an estimated 90 lumens courtesy of 15 micro LED’s. The rear light uses 30 micro LED’s and puts out about 35 lumens. Run times range from approximately 1.5 to 9 hours, depending on the setting.
One last thing to note is that the silicon mounting bands can be attached and detached from either side. This facilitates seat stay or fork leg mounting. And could prove helpful in the event that one of the bands snaps, since you can just get a new band instead of having to resort to zip ties or scrap the light altogether.
The Thunderbolt lights are available in a variety of colors. Check out www.serfas.com