Shimano Di2 BT-DN300 Internal Battery

Special order. Contact Mad Duck Cyclery for supplier availability and estimated delivery.

Internal rechargeable battery with three SD300 ports for compatible Shimano 12-speed road Di2 systems, including Ultegra and 105. Frame mounting hardware, EW-SD300 wires, and charging cable are sold separately.

Manufacturer images are representative; selected size, side, or gearing may differ visually.

Shimano specifications