Shimano Ultegra Di2 Battery Mount

Shimano Ultegra Di2 Battery Mount. This lightweight mount secures the battery for the Ultegra Di2 system to your bike's frame. The long mount attaches between the bottle cage and frame. Short mount is designed for use on frames with dedicated Di2 battery mounting location on chainstay or down tube and is compatible with internal or external wiring kits. What you need to know: Ultegra Di2 Conversion