Shimano SM-BCR2 Charger For SM-BTR2 Internal Di2 Battery

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From Performance Bike

This is the Shimano Di2 SM-BCR2 Battery Charger for charging the battery on all Shimano Di2 electronic shifting systems with an internal battery. Features: SM-BCR2 Internal battery charger is specific to the SM-BTR2 internal battery (BA9070) Plugs into SM-EW90 cockpit junction boxes or SC-S705 display unit Includes USB (SM-USB1) power adapter For use with Alfine Di2, Dura-Ace 9070 and Ultegra 6770 equipped bicycles Use with PC to update Di2 component firmware and change system functions For use with Alfine Di2, Dura-Ace 9070 and Ultegra 6770 equipped bicycles All Di2 components on the bicycle require the same firmware version.