The Shimano SM-BCR2 Battery Charger is designed for charging and maintaining your Di2 electronic shifting system. Compact and easy to use, it keeps your drivetrain powered for smooth and precise shifting every ride.

• Di2 compatible works with Shimano BT-DN110 and BT-DN110-A batteries.
• Direct connection charges through the SM-EW90-A/B Junction (not directly to the battery).
• USB Interface connects to a computer or wall adapter via USB for convenient charging.
• Firmware Updates can also be used to update firmware for your Di2 system.