Contact Us

Mon-Fri 9am-5pm MST


Shimano Di2 BTR1 External Battery



The 7.4V, high performance Lithium Ion battery is designed to deliver reliable, long life even in the worst conditions. In conditions requiring consistent and frequent shifting, the battery is capable of 1000 kilometers of use.
The battery is rechargeable and comes with a mount that easily adapts to most bikes. Lithium Ion technology is lighter, more compact and better performing than other power sources, making it a clear choice for Di2.

  • High performance Lithium Ion composition
  • Rechargeable (1.5 hours for full charge)
  • Mounting bracket to easily adapt to most bikes
  • Approximately 1000 kilometers of heavy use between charges
  • 68g
Model Number
Item Code
Shimano Di2 BTR1 External Battery