Shimano BT-DN320 Di2 Wireless Rear Derailleur Battery

The Shimano BT-DN320 is a next-generation Di2 battery designed to power the wireless rear derailleur system. It provides consistent energy delivery to ensure smooth, precise shifting, even under heavy riding conditions.

Protected Internal Placement: Housed securely inside the rear derailleur, the BT-DN320 battery is protected from external impacts, debris and weather. Its snug fit ensures that it remains stable on rough terrain while still being fully removable for charging or replacement.

Long-Lasting Performance: With a 305 mAh capacity, this battery is built for endurance. Riders can enjoy extended usage time between charges, making it reliable for long training sessions, races, or multi-day rides without worrying about power loss.

Ease of Maintenance: Despite its protected location, the battery is designed for easy removal when needed. This allows straightforward charging and replacement while minimizing downtime and keeping your drivetrain in peak condition.

The BT-DN320 is fully optimized for Shimano’s Di2 wireless platform. It supports fast, stable connections between components, enabling quicker shifts and better overall system responsiveness.

We ship across India. Shipping is free on orders above ₹2,000, and ₹99 is charged on orders below ₹2,000. Cash on Delivery is available for orders up to ₹20,000, with additional COD charges based on order value. Most orders are delivered within 3–6 working days, though delays may occasionally occur. Please note that most Shimano products may take longer to ship. View full shipping policy.

Returns can be initiated within 7 days of delivery. Items must be unused, in original condition, and returned with all tags and packaging intact. Returns are available only on select categories such as apparel, helmets, jerseys, gloves, and similar items. Wetsuits and products discounted above 5% are not eligible for return.

Returns are not accepted for compatibility-related issues unless the product description on our website was incorrect. Return shipping must be arranged by the customer, as pickup is not available.

For eligible returns, you can choose an exchange, store credit, or a monetary refund. Refunds are processed after deduction of applicable shipping and transaction charges. Order cancellations are only possible before the order is processed. View full Return & Refund Policy.