Shimano BT-DN300 Built-In Type Di2 Battery (Grey)

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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 seatposts or frames for a clean look.


  • 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:
Rated Voltage: 7.4V
Rated Capacity: 0.5 Ah / 3.7Wh
Ports: SD300 x3
Weight: 52g

This product was added to our catalog on August 25, 2022