Shimano BT-DN320 Battery

The Shimano BT-DN320 Battery is a tiny powerhouse that tucks neatly inside the XTR rear derailleur, delivering long-lasting wireless shifting energy while staying completely protected from trail impacts. This removable 305-310 mAh battery powers lightning-fast, buttery-smooth XTR shifts while creating a clean setup that keeps cables out of the equation, letting riders focus on their ride!