SHIMANO dn300 Di2 battery12s

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

Features :

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