By A Mystery Man Writer
Shimano BT-DN110-A Built-In Type Di2 Battery (Grey) - Performance Bicycle
Shimano's Di2 electric drivetrain takes shifting to the next level. Two Di2 Battery Chargers are available. Choose the model designed for your system's battery. An additional power cable is required for the external-style battery charger (sold separately). These chargers fully charge the battery in 90 minutes.
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Di2 SHIMANO BIKE COMPONENT