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Shimano BT-DN110A1 Internal DI2 Battery
Rechargeable, internal lithium-ion battery
Fits stealthily inside seatpost or frame
Approximately 2,000 km of precise shifting per charge
Bluetooth connectivity for smartphone/tablet customization
Designed for Shimano E-Tube Di2 electronic shifting systems
Single EW-SD50 wire port
500 full charge cycles before significant degradation
7.4V nominal voltage, 500mAh (3.7Wh)
