SHIMANO BT-DN300 Built-In Type Di2 Internal Battery

SHIMANO BT-DN300 Built-In Type Di2 Internal Battery 

The Shimano BT-DN300 Built-In Type Di2 Battery is the power source for Shimano's 12-speed Di2 derailleurs (and shifters in fully-wired configurations). While remaining the same size as its predecessor, the DN300 now has 3 connection ports to enable simple wiring options. Its thin, sleek profile allows the battery to fit in seat posts or frames for a clean look.

Compatible with EW-SD300 Di2 Wire

Compatible with thinner next-generation electric wire SD300 and systems after R9250/R8150 series
3 SD300 ports
Shared fixing method with BT-DN110
Waterproof design

Battery Chemistry: Li-Ion
Rated Voltage: 7.4V
Rated Capacity: 0.5 Ah / 3.7Wh
Ports: SD300 x3
Weight: 52g

Original Shimano parts guarantee that all components work perfectly for optimum performance and maximum safety and longevity.