Shimano BT-DN320 Di2 Rear Derailleur Battery

Full wireless technology means an all-new battery. The BT-DN320 fits snuggly and protected within the new wireless XTR rear derailleur and powers the fast and smooth shifting XTR is known for.

Features

• Protected Battery: Tucked safely inside an enclosed space, the battery won’t budge even in rough terrain, while remaining completely removable for charging.
• Longevity: 305 mAh provides for more riding on one charge.

Specifications:

• Type: On-board battery
• Chemistry: Li-Ion
• Rated voltage (V): 7.6
• Rated capacity (Ah): 0.305
  
  Specifications subject to change