Shimano Di2 SM-BCR2 Charger

Direct Power. Digital Link.

The SM-BCR2 is more than just a power cable; it also serves as a PC linkage device. When connected to a computer, it allows you to use Shimano’s E-TUBE PROJECT software to update firmware, customize shift settings, and run system diagnostics. This dual-purpose design makes it an essential piece of kit for any home mechanic or serious rider using an 11Speed Di2 setup.

Why the SM-BCR2 is an Essential Tool:

• Convenient On-Bike Charging: Simply plug the charger into the charging port on your Junction A (typically located under the stem or in the bar end). No battery removal is necessary, protecting your internal seatpost setup from wear and tear.

• E-TUBE Software Interface: Beyond charging, this device acts as the bridge between your bike and your PC. You can customize shift button assignments, adjust shifting speed, and toggle Multi-Shift settings via a wired connection.

• Rapid Charging Times: A depleted internal Di2 battery can be fully charged in approximately 1.5 to 3 hours, getting you back on the road quickly.

• LED Status Indicators: Features a clear LED light that indicates charging status (Orange for charging, Off for complete). It also alerts you to any system errors during the charging process.

• USB-Powered Portability: The USB-based design means you can charge from a wall adapter, a laptop, or even a power bank while traveling to a race or event.

• Universal 11Speed Compatibility: Works with all internal-battery-equipped Di2 systems, including Dura-Ace 9070/9150, Ultegra 6870/8050, and GRX 815.

Technical Specifications:

• Model: SM-BCR2

• Type: Battery Charger / PC Linkage Device

• Input: USB Type-A (5.0V DC / 1.0A)

• Output: Specialized Di2 Connector

• Charging Time: ~90 mins to 180 mins

• Compatibility: BT-DN110, BTR2 Internal Batteries

• Included: USB to Micro-USB cable

The Alegro Perspective: The SM-BCR2 is the "bridge" between your bike and your computer. While the newer 12Speed systems use a different cable, this charger remains the lifeline for the millions of 11Speed Di2 bikes currently on the road. In the shop, we use this daily not just to charge, but to troubleshoot system issues. It’s a robust, reliable tool that every Di2 owner should have in their gear bag.

Direct Charging. System Customization. Keep your Di2 Healthy with Shimano.