Colorado Cyclist
Shimano BMR1 and BRM2 Di2 External Battery Mount Base Unit A
- Colorado CyclistUp to 80% off through Dec 31$75Buy
The creators who use it, or GearCred, may earn a commission when you buy through these links, at no extra cost to you.
From Colorado Cyclist
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/