The Shimano BT-DN320A Battery is designed to power Shimanos latest wireless Di2 shifting systems with smooth, reliable performance. Built to fit directly inside the new Wireless XTR Rear Derailleur, this compact battery is well-protected from the elements and the roughest trails. With 310mAh capacity, it offers long-lasting power so you can ride more and worry less about recharging.

This battery stays securely tucked away inside the derailleur, helping keep your setup clean and low-profile while staying safe from impact or movement. When its time to recharge, the BT-DN320A is fully removable for easy charging off the bike. Whether youre racing or just out for a long ride, this battery keeps your wireless drivetrain running at its best.

Key Features

• Integrated Design: Battery fits directly into the rear derailleur for a secure and clean setup

• Long Ride Power: 310mAh capacity delivers extended use between charges

• Easy Charging: Fully removable for off-bike charging (charger sold separately)