Shimano BCR2 Charger for Internal Di2 Battery [includes cord]

Shimano Di2 Battery Charger:

All Di2 components on the bicycle require the same firmware version
Using Di2 components with different firmware versions may cause malfunctions
For use with Alfine Di2, Dura-Ace 9070, R9100 and Ultegra 6870/6770 equipped bicycles
SM-BCR2 Internal battery charger is specific to the SM-BTR2 and IBTDN1101 internal battery (BA9075)
Includes USB (SM-USB1) power adaptor
Plugs into SM-EW90 cockpit junction boxes or SC-S705 display unit
Use with PC to update Di2 component firmware and change system functions with software from www.e-tubeproject.shimano.com