Battery Holder locates a Shimano Di2 seat-tube-fit battery(Shimano SM-BTR2) inside a 3T seatpost, enabling easy fitting and removal of the battery. It is compatible with all 3T seatposts.

Specifications

  • Weight: 12 g
  • Material: Stainless steel (lip); AL-alloy (body)
(Battery Not Included)

 

 

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