Siva Cycle Atom charges devices at a rate of 500mA, which is at pace with charging when connected to a computer

Siva Cycle Atom is a battery that gathers its energy from your bike, using a modern upgrade to the pedal-generated bike lights people have used for decades.

Users install the Siva Cycle Atom on the back tire, where the generator collects kinetic energy from the motion of the bicycle. It weighs as much as a banana, and does not create noticeable drag.

If you have a USB-charged device, you can plug it into the Atom to charge as you ride at a rate of 500mA. That’s about as quickly as a smartphone charges when connected to a computer.

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