Shimano BT-DN110-A Di2 Battery Description: The Shimano BT-DN110-A ...
Built-In Type Di2 Battery is the power source for Shimano's 11 speed Di2 derailleurs and shifters. Its thin, sleek profile allows the battery to fit in seatposts or frames for a clean ...
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 ...