We were pretty intrigued by the Yogen manual charger concept we saw earlier. While the production unit we saw today is markedly different—it doesn't disappoint. Instead of charging gadgets with a pedal, users now pull a cord.

Charging devices while pulling the string takes just as long as charging them via wall outlet so it won't replace plugging in, but in a pinch the compact device could be a life saver. There is super-low resistance in the cord so continuously pulling the string to charge isn't much of a chore (just tedious). The device is available now directly from Yogen for $39.99.

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