Di2 Seatpost mounting batteries in aero seatposts such as ISP, Vector, and D-Fuse models. The holder is inserted into post beside the battery and a compression screw expands the holder to secure ...
The Ritchey Di2 Seatpost battery mount securely mounts ...
a Di2 battery inside a round seatpost (Di2 battery not included). Only compatible with 2021 Shimano Di2 batteries and older. Not compatible with 12-speed Di2 batteries.
The Shimano BT-DN300 Built-In Type Di2 Battery is ...
the power source for Shimano's 12-speed Di2 derailleurs (and shifters in fully-wired configurations). While remaining the same size as its predecessor, the DN300 now has 3 connection ports to enable simple wiring ...