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Shimano Di2 Rear Derailleur Battery BT-DN320

Shimano Di2 Rear Derailleur Battery BT-DN320

Regular price $55.00 USD
Regular price Sale price $55.00 USD
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The BT-DN300 gives me the same compact fit as my old battery but with updated wiring options. I’m keeping things clean and tucked away while adding wired backup—exactly what I want for a modern 12-speed Di2 setup.

The Shimano BT-DN300 Built-In Di2 Battery brings next-generation compatibility and clean aesthetics to your electronic drivetrain. Matching the slim form of the BT-DN110, it tucks discreetly into a frame or seatpost while powering both front and rear derailleurs with stable 7.4V output.

Equipped with three SD300 ports, the DN300 is designed to support Shimano’s latest 12-speed Di2 platforms, including the R9250, R8150, R7150, and RX825 series. Whether running a semi-wireless cockpit or a fully wired system, this battery adapts with seamless integration. For riders prioritizing system redundancy, the third port adds wired backup capability without altering setup.

Weighing just 52g and compatible with Shimano’s E-TUBE PROJECT software for firmware updates, the DN300 offers a lightweight, future-proof solution for precision shifting across road and gravel disciplines.

Specifications

  • Compact Di2 battery mounts cleanly inside seatpost or frame
  • Three SD300 ports support full or semi-wireless 12-speed setups
  • Compatible with R9250, R8150, R7150, and RX825 Di2 systems
  • Shares mounting design with previous BT-DN110 battery
  • Li-Ion chemistry delivers stable 7.4V output
  • E-TUBE PROJECT compatible for firmware updates
  • Lightweight 52g construction for performance-focused builds
  • Ideal for road, gravel, and endurance cycling with Di2 drivetrains
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