Special Orders

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BT-R1A External Di2 Battery (BA7970)

  • Currently, we do not ship because mail order might interfere with giving our instore customers the best possible customer service. Sorry!
Shimano Di2 Batteries. Must purchase battery, charger, and power cable to complete the system
  • All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions
  • Use Di2 system checker to update component firmware from
  • Battery weighs 71g
  • Di2 External Battery, battery charger, and power cable are universal between Dura-Ace 9070, 7970, Ultegra 6870, 6770 and Alfine Di2 systems
Item Specifications
Shifter/Derailleur CompatibilityDura-Ace 7970 Di2
Shifter/Derailleur CompatibilityDura-Ace 9070 Di2
Shifter/Derailleur CompatibilityShimano Ultegra Di2