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DESCRIPTION
The Shimano Di2 battery SM-BTR1 for external mounting is a rechargeable 7.4V, high-performance Lithium Ion battery that will keep your Di2 system supplied with power no matter what. Reliable performance in even the worst weather conditions, the rechargeable Di2 battery holds a 1000km charge, regardless of how often you shift Proven to deliver reliable performance in all conditions
- Lithium Ion technology is lighter, more compact and better performing than other power sources
- Extremely reliable Li-Ion 7.4V technology
- High performance 1000/1600 km average
- Model: SM-BTR1-A
- Compatibility: Shimano Dura-Ace Di2 and Ultegra Di2 groups
- Weight: 71g
PLU: 47040
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