Shimano Di2 Bottle Cage Battery Mount BTR2

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sku: 71252

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Shimano Di2 Bottle Cage Battery Mount BTR2

The SM-BTC1 mounts Shimano’s SM-BTR2 battery on a bike’s water bottle bosses and also acts as a Junction B, connecting wires from the shifters to the battery and derailleur.
  • Mounts current SM-BTR2 battery externally next to bottle cage
  • Junction B function
  • Clean appearance due to internal wire routing
  • Low profile design mounts to any frame with bottle cage mount
  • Six E-Tube wiring ports with cable organizer
  • System expansion than=kst to the E-Tube platform


  • basic holder
  • screws and washers
  • e-tube box with 6 ports and integrated cable to connect to the SM-BTR2 battery
  • 2 dummy plugs
  • foam pad
  • 2 end caps


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