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The Shimano BT-DN300 Internal Battery supplies power to the front and rear derailleurs of the Dura-Ace 9200 and Ultegra 8100 shifting groupsets. In addition to the two connections for the front and rear derailleurs, a third connection can be used for fully wired operation of the new Di2 groupsets
The DN300 battery has the same dimensions and mounting method as its predecessor. The SD300 connectors for the latest generation of Shimano E-Tube cables are new.
The battery, which consists of two high-quality lithium-ion cells, is charged via a charging port integrated into the housing. Its cells offer high capacity and last for approximately 2,000 km with frequent shifting operations. Lithium-ion technology allows the battery to be used in a wide temperature range from -20 to 60 °C, making it suitable for use in all seasons.
Technical specifications:
- Type: lithium-ion
- Nominal voltage: 7.4 V
- Capacity: 500 mAh / 3.7 Wh
- Connections: 3 for cables
- SD300 max. range: approx. 2,000 km
- Charging time: 1.5 hours
- Bluetooth: Compatible with Bluetooth LE (Low Energy)
- Compatibility: Shimano Dura-Ace Di2 9200 | Ultegra Di2 8100
- Mounting: Internal (seatpost, Headset)
- Diameter: 16.5 mm
- Length: 155 mm
