Shimano Short Battery Mount External/Internal Wiring. Shimano Di2 External Battery Mounts
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 http://e-tubeproject.shimano.com/
Item Specific Details
Manufacturer Part #: IBMDN100S1
Model: Di2 Battery Mount
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