The Shimano SM-BCR2 is required to charge the SM-BTR2 internal seatpost battery used for Dura-Ace 9070, Ultegra 6770, and Alfine electronic systems.
The SM-BCR2 Charger includes a USB (SM-USB1) power adapter.
Ordered by Most Relevant First
Excellent charger for this system
1 of 2 customers found this review helpful.
Excellent charger for this system, easy to use, quick charge
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