Derailleur battery Shimano Di2 BT-DN320: a removable 305 mAh battery for compatible wireless Di2 derailleurs.
| Feature | Specification |
|---|---|
| System | Shimano Di2 wireless XTR rear derailleur |
| Capacity | 305 mAh |
| Position | Protected compartment inside the rear derailleur |
| Charging | Removable battery |