Shimano BT-DN300 Built-In DI2 Battery - For Dura-Ace 9250 Ultegra R8150 Systems Compatible SD300 Wires

Shimano BT-DN300 Built-In DI2 Battery – Designed for Dura-Ace 9250 and Ultegra R8150 Systems, compatible with SD300 wires. This advanced battery ensures reliable power delivery for your Di2 electronic shifting system, enhancing performance and ride consistency. Please note, the battery charger and power cable must be purchased separately to complete your setup.

• Ensure all Di2 components on your bike run the same firmware version to avoid malfunctions and maintain seamless operation.
• Use the Di2 system checker available at http://e-tubeproject.shimano.com/ to update firmware and optimize your system’s performance.