BM-DN100 Di2 External Battery Mount

• Battery mount for the externally-mounted SM-BTR1
  
• Required to connect the Di2 system wirelessly to the eTube app
  
• Backwards compatiblity: allows to use all the latest Di2 wireless functionalities on older eTube Di2 groups at a minimal cost
  
• -01: long mount, for external cable routing
  
• -02: short mount, for internal or external cable routing

Attributes