Shimano Di2 12 Speed Bt-dn300 Internal Battery – Black

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Shimano Di2 12 Speed Bt-dn300 Internal Battery – Black


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Shimano Di2 BT-DN300 Battery for internal mounting
The new Shimano DN300 battery features the same waterproof design that Di2 users have loved for generations. Now with 3 EW-SD300 ports, it delivers stable power to Shimano’s 12-speed road front derailleurs and rear derailleurs (if a fully wired option is selected).

THE SCIENCE OF SPEED: Shimano Di2 BT-DN300 Battery

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.

Features – Shimano Di2 BT-DN300 Built-In Battery

  • Compatible with thinner next generation electric wire SD300 and systems after R9250/R8150 series
  • 3 SD300 ports
  • Shared fixing method with BT-DN110
  • For built-in installation in the frame or seat post
  • High-power lithium-ion battery

Product features

  • Model: BT-DN300
  • Type: Built-In
  • Battery: Lithium Ion
  • Nominal capacity: 500mAh 3.7Wh
  • Nominal voltage: 7.4V
  • Compatible electric wire: EW-SD300
  • E-tube port (pcs): 3
  • Operating temperature range:
    • During discharge: -10°C bis 50°C
    • During charging: 0°C bis 45°C
  • Diameter: Ø17mm
  • Length: 152mm


  • Dura Ace Di2 R9250
  • Ultegra Di2 R8150


  • approx. 52g (manufacturer information)

Scope of delivery

  • 1 Shimano Di2 BT-DN300 Battery for internal mounting


E-Tube platform offers optimum flexibility on your bike. E-TUBE transmits interactive signals and power supply to each parts by “Plug & play” connection. E-TUBE is no rust, no stretch, no freeze and it ensures advanced low maintenance. And SM-PCE1 connects between PC and components to update firmware. Digital device stay the latest version with updating firmware for improve function.


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