Upgrade your Di2 shifting system with the Shimano BT-DN110 Di2 Battery. Designed to fit stealthily in seat posts and other internal mounts, this battery is compatible with Shimano's E-Tube technology to drive precise shifts no matter the conditions.

• A hidden battery option for Di2 drivetrains
• Tucks neatly inside your seatpost to preserve frame lines
• Compatible with Shimano's industry-leading E-Tube technology