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Shimano Di2 Internal Seat Tube Battery BT-DN110-1

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Shimano’s new BT-DN110 battery is the internal battery for their next-gen Di2 systems. This updated model has been optimized for the new smart display systems with wireless bluetooth setup, and has a longer charge life. It features the same size body as the previous generation though, making it compatible the older system. See Shimano’s compatibility chart for full details on models the battery is compatible with.


  • Compatible charger: SM-BCR2
  • Weight: 50g
  • Required for use with wireless Bluetooth setup
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