Practical external holder for mounting internal Di2 batteries at the bottle cage

Get a simple, secure solution for mounting your internal Shimano Di2 battery (such as BT-DN110 or BTR2) with this genuine Shimano battery holder. This mount is specially designed for bike frames where internal battery placement inside the seatpost, steerer tube, or frame tubing is not possible or practical.

The holder installs quickly and discreetly directly to your frame's standard bottle cage braze-ons. It keeps the battery firmly anchored and protected against road vibrations while maintaining clean wire routing for your electronic Di2 drivetrain setup. An ideal adapter for retrofitting or converting custom and older frames.

• Bottle Cage Mountable: Easily attaches directly to standard frame bottle cage bosses.
• Internal Battery Fit: Designed for Shimano's cylindrical internal Di2 battery units.
• Secure Anchoring: Keeps the battery locked in place and shielded from excessive vibration.
• Low-Profile Design: Sits flush under or alongside your standard bottle cage setup.
• Genuine Shimano Engineering: Precise fitment and long-lasting, durable build.