Shimano BT-DN300 Di2 Battery

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Shimano BT-DN300 Di2 Battery

The new DN300 battery features the same waterproof 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, the slim DN300 battery can be housed inside seat posts or frames ensuring a clean aesthetic. Now with 3 ports, the DN300 simplifies wiring to front and rear derailleurs, supplying stable power at all times. The third port is for riders who seek the redundancy of Shimano's 12-speed Di2 wired option.


  • Model: BT-DN300
  • Series: Dura Ace R9200
  • Average weight: 52g
  • Type: Built-in battery
  • Compatible charger: RD-R9250, RD-R8150, RD-R7150
  • Firmware update by E-Tube project: ✔
  • Master unit: ✔
  • Chemistry: Li-Ionli>
  • Rated capacity (Ah): 0.5
  • Rated capacity (Wh): 3.7
  • Rated voltage (V): 7.4
  • SD300 port (pcs): 3


  • Compatible with thinner next generation electric wire SD300 and systems after R9250/R8150/R7150 series
  • 3 SD300 ports
  • Shared fixing method with BT-DN110

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