SHIMANO BUILT-IN BATTERY-BT-DN300

The new DN300 battery features the samewaterproof design that Di2 users have loved for generations. Now with 3 ports,it delivers stable power to Shimano's 12-speed road derailleurs and shifters(if a fully wired option is selected).

With the same size as its predecessor, theslim DN300 battery can be housed inside seat posts or frames ensuring a cleanaesthetic. Now with 3 ports, the DN300 simplifies wiring to front and rearderailleurs, supplying stable power at all times. The third port is for riderswho seek the redundancy of Shimano's 12-speed Di2 wired option.

 FEATURES:

• Compatible with thinner next generationelectric wire SD300 and systems after R9250/R8150 series
• 3 SD300 ports
• Shared fixing method with BT-DN110