The new Dura Ace 9070 internal battery, available to fit either in the seat post, seat tube or down tube. The new junction box port will allow the battery to be charged in place. Weighing in at 60 percent less than the previous external battery, this system requires less weather proofing.
- 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 e-tubeproject.shimano.com