The battery forms the Di2's heart. Its lithium ion technology guarantees a range of at least 2,000 km [1,250 miles] after which it can be fully recharged in just ninety minutes.
The battery's status can be read from an indicator next to the handlebars so that you'll never be confronted with any unpleasant surprises. Derailleurs can also be reset or trimmed from this control unit.
Features: • External mounts are for external cables External cable sets are for upgrading your current bike to Ultegra Di2 cable routing. • Internal mounts are for Internal cables that are compatible with frames specifically designed for Di2
Rated 5 out of 5 by TumshieHeed Simple, Robust and Effective Mount
This mount does what is says on the tin. It is a simple, robust and effective mount.
it is easy to install on your bike and is not obtrusive.
Not sure if CRC are including the battery with this Mount but at this price one would expect so.
Perhaps CRC should make it clear on the web page description that the battery is or is not included.
30 October 2013