This is the Shimano SM-BTR1 Di2 Battery.Â
Features:
- 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 1,000 miles on average
$89.99 Original price was: $89.99.$62.99Current price is: $62.99.

This is the Shimano SM-BTR1 Di2 Battery.Â
Features:
Bottom Brackets & Parts
Chainrings & Accessories
Cranksets & Parts
Cables & Housing
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