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Item # SHI0649
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Shimano E-Tube Battery Charger for BA9070 (SM-BTR2) w/ Charging Cord $0.00
With the new Shimano internal SM-BTR2 Di2 Battery, charging is a straightforward affair once you have the compatible parts. You will need one of the new E-Tube Cockpit Junction Boxes (the SM-EW90-A, with three ports, or SM-EW90-F, with five ports) as well as this new E-Tube SM-BCR2 battery charger. Both of these junction boxes were built with an external charging port for the new charger. This is the only way to charge the new battery.
Like a camera battery charger, one end of the SM-BCR2 charger connects to either your computer or wall socket via a USB cord. The other attached cord plugs directly into your E-Tube Cockpit Junction Box. Similar to the external battery, the new SM-BTR2 Di2 internal battery takes 1.5 hours for the battery to receive a complete charge.
The Shimano E-Tube Battery Charger is included with the necessary charging cord.
Di2 Reference Guide
Note: This reference is meant to be used as a guide for creating a Shimano Di2 drivetrain package. For further assistance please feel free to give us a call.
Battery and Wires:
Our Shimano Di2 packages are built for three standard configurations based on battery location and wire routing. First, you'll need to determine if your frame uses an internal or external battery mount, and whether the routing is either internal or external. Below is a guide for which battery, charger, mount, and junction boxes are required for your configuration.
|Battery||Battery Charger||Battery Mount||Junction A||Junction B|
w/ External Routing
|SM-BTR1||SM-BCR1||SM-BMR2||SM-EW90 A/B 3/5 port||SM-JC40|
w/ Internal Routing
|SM-BTR1||SM-BCR1||SM-BMR2||SM-EW90 A/B 3/5 port||SM-JC41|
w/ Internal Routing
|SM-BTR2||SM-BCR2||SM-EW90 A/B 3/5 port||SM-JC41|
The SM-BMR2 battery mount is available in three configurations -- Long External, Short External, and Long Internal. Both Long versions are to be mounted using the bottle cage mounts, while the Short version is designed for Di2-specific frames with either a chainstay or down tube mounting location.
There are two junctions needed for completing your Di2 build -- A and B. Junction A, SM-EW90, is located at the handlebars and available in both three- and five-port options. The three-port option is intended for standard shifting with a left and right hand shifter. If you have the intention of using Shimano's satellite sprint shifters, or a combination of time trial shifters and shifter/brake levers, the five-port junction box will be the necessary selection.
Depending on your frame specification, Junction B (SM-JC40 or SM-JC41) is located either internally or externally at the bottom bracket area. Accordingly, SM-JC41 is designed for frames with internal wire routing, while SM-JC40 is intended for external wiring options.
For your convenience, we've created wire packages for your Di2 build kit in the sizes Small, Medium, and Large. Below, you'll find which wire lengths are included in each kit. Additionally, we've recommended a kit size based on your frame size.
|Down Tube Wire||700mm||750mm||950mm|
|Front Derailleur Wire||300mm||350mm||400mm|
|Rear Derailleur Wire||500mm||550mm||600mm|
E-Tube Wire length suggestions are an approximation.