Battery-free auto-shifting system is powered by the cyclist's pedaling By Ben Coxworth June 05, 2025 The Shimano Q'Auto system gets all the juice it needs from a dynamo in its freehub ...
As Shimano Di2 and Campagnolo EPS electronic transmissions continue to mature and gain in popularity, so too have options for hiding away their unsightly batteries. Besides getting them out of view, ...
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