Shimano's Di2 electronic shifting system tucks the battery inside the seatpost on most road installations, which works perfectly until you need to run a dropper post, use a non-compatible seatpost diameter, or build up a frame that doesn't accommodate internal battery routing. The Ritchey Di2 Rubber Battery Seatpost Mount solves this problem by securing the battery externally to your seatpost using a simple rubber strap system, giving you flexibility in how and where you position the battery without permanent modifications or frame-specific mounting bosses.

The mount uses a durable rubber construction that wraps around the seatpost and holds the Di2 battery securely against the post. This approach works particularly well for gravel and cyclocross builds where dropper posts are becoming standard equipment, or for frames with seatpost diameters that don't accept internal battery housings. The rubber material absorbs vibration and prevents the battery from rattling, while the strap design accommodates different seatpost shapes and sizes without requiring precise diameter matching.

Installation takes seconds—wrap the mount around your seatpost, secure the battery in the holder, and route your Di2 wiring accordingly. The external position actually makes battery swaps and charging more accessible than internal mounting, which can be a practical advantage during stage races or events where you're managing multiple bikes. Ritchey offers the mount in two seatpost diameter ranges to ensure a secure fit across different frame sizes and seatpost standards.... Read More