Shimano Di2 Internal Battery SM-BTR2
Internal Shimano Battery for Di2 - can be mounted in seatpost of elsewhere in the frame.
The lithium-ion battery SM-BTR2 is mounted into the frame or seat post. The battery provides a long service life and a high battery performance (up to 2.000km with one charge).
The optional connection cable (EW-SD50) are available (from 250 to 1400mm) in various lengths. Measurements: Ø17mm; length 160mm. Capacity: 500mAh.
Note: Please use SM-BCR2 charger only
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