NEW Shimano BT-R1A External Di2 Battery - 7970, 9070, 6770, 6870 consignment and increased durability

and increased durability

Sloping crown with threaded eylets

High volume casing enables comfortable ride

Bearing Type: Cartridge

DT Swiss standard brass nipples have a square interface and slot on the top

NEW Shimano BT-R1A External Di2 Battery - 7970, 9070, 6770, 6870 consignment and increased durabilityShimano 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 Shifter Derailleur Compatibility: Dura Ace 7970 Di2 Shifter Derailleur Compatibility: Dura Ace 9070 Di2 Shifter Derailleur Compatibility: Shimano Ultegra Di2