Shimano Di2 BTR2 Internal Battery

Description

The rechargeable lithium-ion battery SM-BTR2 is mounted internally in the frame or seat post for a clean look. Charging is easy with the SM-BCR2 battery charger that connects via the SM-EW90 junction box, so you don't have to worry about removing your seatpost for charging. Requires SM-BCR2 battery charger sold separately.

Model Number
ISM-BTR2A
Item Code
SSBHCMTJ
Shimano Di2 BTR2 Internal Battery