Avid cyclists typically pride themselves in reducing their carbon footprint via their active, healthy lifestyle. Now bikers can shrink that footprint even more with a new bicycle accessory that uses pedal power to charge their smartphone.

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Developed by Siva Cycle, the Atom is a small device that mounts to the rear axle and charges USB-powered devices with the kinetic energy pumped out by the cyclist. A series of small gears, set in motion by the spinning wheel, produces a current that passes through the device’s internal electronics, where it’s converted to usable electricity.

The Atom can be used two ways: to either directly charge a smartphone or charge a removable 1300 mAh battery that can be connected to a device later. Whichever way it’s used, the the Atom has a charge rate of 500 mA — about the same speed as a smartphone connected to a computer via USB.

“The only limit to how much electricity you create is how often you ride,” said co-founder and CEO Dave Delcourt in an interview with VentureBeat. “We are transforming the daily ride by turning the energy, desire and passion of riding into something with everyday use.”

While the Atom certainly is not the only device charger for bikes, it’s perhaps one of the most compact. And at just over 10 ounces, 7.5 inches tall and 3 inches wide, it’s small enough not to alter the bike’s equilibrium. Plus it’s simple installation means bikers can easily take it on or off where ever they go, on which ever bike they choose.

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Delcourt and co-creator Aaron Latzke have launched a Kickstarter campaign to fund the project. So far, the team has raised over over $35,000, well on their way to an $85,000 goal. Early backers can snag the device for $85. After those offers are gone, the price jumps to $95.

via Venture Beat

Credit: Siva Cycle