SHIMANO Battery (Di2 spec.) BT-DN300 Internal

The Shimano DI2 BT-DN300 internal battery is compatible with Ultegra Di2 and Dura Ace Di2.

With the same size as the previous model, the slim DN300 battery can be housed inside the seat post or frame, for greater aesthetics. Now with 3 ports, the DN300 battery simplifies wiring the front and rear derailleurs, and provides stable power at all times. The third port is for riders who want to keep the Shimano Di2 12-speed wired option. 

The Shimano Di2 Battery in detail

• Compatible with thinner next generation SD300 power cable and systems after R9250/R8150 series
• 3 SD300 ports
• Attachment method shared with BT-DN110 battery

Complete your order with a Shimano Di2 SMBCR2 Charger