Shimano Adapter Unit for BT-DN300, adapter for the proper connection and installation of the internal Di2 BT-DN300 battery in bicycle frames. The BT-DN300 battery is used in the latest Shimano Di2 12-speed Road systems, providing stable power supply to the Di2 group and clean wiring with the 3 SD300 ports.

The adapter ensures stable and secure mounting, allowing alignment of the battery and proper connection of the Di2 SD300 cables without movement or "hanging".

• Compatibility: Shimano BT-DN300 Di2 battery
• Usage: Battery connection/support in seatpost/bicycle seat tube
• Application: E-Road / Di2 12-speed systems
• Material: Plastic & metal parts for secure mounting
• Weight: 5 g