SHIMANO Dura-Ace 9070 Battery SM-BTR1. External type.
Generic Shimano Di2 E-Tube SM-BTR1 External Battery Dura-Ace Ultegra Shift - Black 6870 9070 : : Sports, Fitness & Outdoors
Shimano Di2 SM-BCR2 Battery Charging Unit – Racer Sportif
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Shimano Di2 External Battery / SM-BTR1 Dura-Ace / Ultegra / E-tube system
Shimano Di2 SM-BTR1A Universal Battery [ISMBTR1A]
Shimano Di2 External Battery Mount, Dura-Ace SM-BMR2-L, E-Tube, External, Long (ISMBMR2LB)
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Rear Derailleur Battery Replacement for Shimano Di2 BT-DN300, Di2 SM-BTR1, Di2 BT-DN110 - 500mAh 7.4V Li-Ion
Shimano SM-BTR1 Di2 External Battery
Di2 Battery . SM-BTR1, Sports Equipment, Bicycles & Parts, Parts & Accessories on Carousell
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SHIMANO DURA ACE DI2 external cord short battery code~SM-BMR2-S1 / SHI