Patent Patrol: Next Shimano Di2 Could Be 13-speed, Fully Wireless, Even Electric Brakes?

This pending Shimano patent from last year for a “Derailleur for human-powered vehicle” illustrates an all-new electronic bicycle derailleur design with its own built-in rechargeable battery, and the ability to shift across 13 cogs. Yes, this is a sneak peek at fully wireless Shimano Di2 13-speed drivetrain, with a removable battery.

Shimano go around in circles to describe what is unique as locating the battery in “a preferred position while maintaining mobility of a connecting assembly”. The gist of it seems to be, that Shimano thinks they have a better place to put their battery on a derailleur’s parallelogram links for improved performance . But Shimano designed the proposed smaller Di2 front derailleur battery while riding. That is a limp home mode that would let you get a few more rear shifts.

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Source: Energy Industry News (energyindustrynews.net)

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