Shimano SM-BTR1 Di2 External Battery
This is the Shimano SM-BTR1 Di2 Battery.
- Di2 External Battery, battery charger, and power cable are universal between Dura-Ace 9070, 7970, Ultegra 6870, 6770 and Alfine Di2 systems
- Weighs only 71g
- Lasts around 1000 miles average
Type: Lithium Ion
Nominal Capacity: 530 mAh
Operating Temperature Range: -20 - 60°C (when discharging), 0 - 45°C (when charging)
Storage Temperature Range: -20 - 60°C
Nominal Voltage: 7.4V
This product was added to our catalog on July 26, 2014.