SHIMANO Internal Battery BT-DN300
Brand: Shimano
Reference: IBTDN3001
Description
Same size as its predecessor, the slim DN300 battery can be housed inside seatposts or frames, ensuring a clean aesthetic. Now with 3 ports, the DN300 simplifies wiring to the derailleur and derailleur, delivering stable power at all times. The third port is for riders looking for the redundancy of Shimano's cabled 12-speed Di2 option.