Shimano SM-BTC1 Battery Case for SM-BTR2
The SM-BTC1 mounts Shimano's internal SM-BTR2 battery externally on a bike's water bottle bosses and also acts as a Junction B or lower junction box, connecting wires from the shifters to the battery and derailleur. Its six E-Tube wiring ports with a cable organizer allow for system expansion.
- Mounts SM-BTR2 battery externally next to bottle cage
- Functions as a lower B junction
- Mounts to any frame with a water bottle mount
- Six E-Tube wiring ports with cable organizer