SHIMANO SM-BTR1 Di2 External Mount Battery

Product Description

The power house of Shimano Di 2 is a long-life 7.4V Li-Ion battery that is both compact & reliable, taking shifting effort away from you Excellent sealing & reliability have been proven through repeated field tests in various riding conditions, including extreme temperatures, rain, mud, & cobble stone roads Using a hard wired battery system which is both light weight & accurate compared to current wireless technology (as a wireless system would require 4 batteries: one for the RD, one for the FD, & one for each shift lever) The use of a single small & discreet battery is light weight, efficient & creates a robust & reliable system One charge can give between 1000 & 2000 kilometre range depending on conditions & front mech operation (as this is the main power drain)500 times rechargeable life Optional battery mount adapter is available if standard mount is not compatible Reliable & secure water resistant terminals Easily removable for charging Battery weight is 68 grams