SHIMANO Battery Di2 BT-DN300 Built In Type — Bike Stop

SHIMANO BT-DN300 Built-in DI2 Battery - for Dura-Ace

Shimano Ultegra Di2 R8170 Groupset 2x12-speed OEM without Wrapping

SHIMANO Battery Di2 BT-DN300 Built In Type — Bike Stop

Shimano Di2 BT-DN300 Battery for internal mounting Shimano

Other - Conte's Bike Shop

Shimano Di2 Batteries. Must purchase battery, charger, and power cable to complete the system. All Di2 components on the bicycle require the same firmware version.

Shimano BT-DN110 Di2 Battery

Shimano di2 BT-DN300 - パーツ

SHIMANO Battery Di2 BT-DN300 Built In Type — Bike Stop

In-depth guide on upgrading your old Di2 bike

In-depth guide on upgrading your old Di2 bike