Shimano Di2 BT-DN320 internal battery 2025

Fully wireless technology gives you a whole new battery. The BT-DN320 fits snugly and securely into the new XTR wireless rear derailleur and powers the smooth, fast shifts for which XTR is known.

Features

• Protected battery: Tucked safely inside an enclosed space, the battery won't move even over the roughest terrain, while remaining fully removable for charging.
• Longevity: 305 mAh offers a longer ride without recharging.

Tech Spec

• Rated capacity: 2.32 Wh
• Rated capacity: 0.305
• Rated voltage: 7.6
• Compatible charger: EC-DN100