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.

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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

Compatibility

• Dura Ace Di2 R9250
• Ultegra Di2 R8150

Weight

• approx. 52g (manufacturer information)

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Scope of delivery

• 1 Shimano Di2 BT-DN300 Battery for internal mounting

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Technology

E-Tube
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.