
In bicycle-friendly Denmark, the law says you need to have front and rear lights on your bike. So it’s no surprise that Reelight’s battery-free bike lights are a Danish invention. And what a great idea… Self-powered bike lights that are always on. Reelight even conducted a study that shows daytime running lights significantly reduce bicycle accidents.
The lights are fueled by electrodynamic induction. In layman’s terms, a pair of spoke-mounted magnets pass over a copper coil (contained within the light unit) as the bicycle wheels rotate. The SL120 models feature an energy storing capacitor that allows the lights to continue flashing for several minutes once the wheels have stopped.
Aside from the convenience and inherent safety benefits of bike lights that never run out of power, battery-free bike lights are also environmentally friendly. And Reelight is proud to be promoting such a “green” product.
Reelight bike lights attach to the bike’s axles, which unfortunately means the lights are mounted too low to provide optimum visibility. So while they are a great backup or addition to conventional handlebar, seatpost, backpack or helmet-mounted bike lights, we at Urban Velo do not suggest using the Reelight system as your primary lighting system.
The Reelight mounting system isn’t quite perfect, either. Because the light units attach to the axle, you probably shouldn’t use them with quick release hubs. Since most modern bikes don’t use bolt on hubs, it might be nice if there were fork-leg and seatstay mounting alternatives. And even though there are compact, extended and left-side models available, certain bikes and accessories may hinder installation.
At $40 to $65, Reelight’s bike light sets do not come cheap. Unfortunately that’s par for the course with most environmentally sound products. The SL120 Compact model (tested) retails for $55. Visit www.reelight.com for more info or to order direct.
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