Why You Want: You’re looking for a bright tail light that’s durable, easy to maintain, and can be mounted almost anywhere.
Pros: A 30-LED strip in this light produces a 35 lumen taillight, plenty bright to be seen from a far. An internal lithium-ion USB rechargeable battery means the days of disposable batteries are gone. Light silicone casing means this light is both water resistant and be quite durable, be it on the bike or in your bag.
Cons: The power button is sometimes hard to depress, we would have liked to see a more responsive button.
RoadBikeReview Take: The most important feature of a taillight is to be seen and this taillight does that quite well. The 30-LED strip produces a bright light rated at 35 lumens, bright enough to be seen for up to a mile according to Serfas. The housing is made of light silicone, which makes it both water resistent and durable, standing up to the elements without a probelm. An internal lithium-ion battery makes maintenance a breeze – only needing a usb cable to recharge this light. We’re happy to see more and more lights offered this way, as the days of buying small AAA batteries is over.
Mounting is done with two straps that make it easy to mount the thunderbolt to a variety of tubes on your bike. This light works well on your seatpost, but we’ve seen them mounted to seat stays as well… the most creative mount was on some wheel spokes for a Tron like effect.
The Thunderbolt comes in 7 different color options, including black, which should make it easy to find one that doesn’t clash with your bike.
Run Time: 1.75 hours (high beam); 7 hours (low beam); 3 hours (high blink); 9.5 hours (low blink)
More Info: www.serfas.com