By A Mystery Man Writer
2nd Choice. Further information in the product description.
BM-DN100-S, Battery Mount for EW-SD50, Short, for External
Electronics - Lakeshore Bike
Shimano XT Di2 1x11 First Impression
Shimano SM-BTR1 Di2 External Battery - La Bicicletta Toronto
Shimano BMDN100 Di2 Long Battery Mount for External Wiring
Hands On Bike: Bike Friday HaD: Di2 Battery Placement and Wiring
Shimano BM-DN100 Di2 Battery Mount - Components
Shimano Di2 BM-DN100-S Battery Mount short internal/external
Shimano Di2 BM-DN100-S Battery Mount short internal/external
Electronic Parts — Bike Stop
Shimano BM-DN100 Battery Mount for SM-BTR1 Di2 Battery-Pack
Shimano Di2 Battery Mount BM-DN100 - bike-components
Shimano BM-DN100 Battery Mount for SM-BTR1 Di2 Battery-Pack
Shimano SM-BCR2 Battery Charger for SM-BTR2 / BT-DN110 - bike