Shimano Di2 SM-BTR1 Battery
By A Mystery Man Writer
Description
Shimano Di2 SM-BTR1 Battery Shimano's Di2 SM-BTR1 Battery is their external power source. It works with all versions of Di2, provided you have a SM-BMR2 Battery Mount to attach the battery to the system. Battery life depends on many factors. It's not only the number of times you shift, but the climatic conditions, and how often you use the front derailleur, as it takes more energy per shift.
Shimano Di2 Batteries. Must purchase battery, charger, and power cable to complete the system. All Di2 components on the bicycle require the same firmware version. Using Di2 components with different firmware versions may cause malfunctions. Di2 External Battery, battery charger, and power cable are universal between Dura-Ace 9070, 7970, Ultegra 6870, 6770 and Alfine Di2 systems. Battery weighs 71g.
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