Shimano BT-DN320 Di2 Wireless Rear Derailleur Battery
- Long-life 310mAh Li-Ion battery
Shimano’s BT-DN320 Di2 Wireless Battery delivers efficient, compact power for precise shifting in all conditions. With a long-lasting charge, proven weather resistance, and a discreet fit, it ensures your electronic drivetrain runs reliably on every ride.
Key Features and Benefits:
- Compact 310mAh lithium-ion cell: The battery’s small size allows for discreet integration into your Di2 system. Its compact design keeps the setup light and clean while reducing the risk of external damage.
- Power-saving battery management system: Each full charge delivers up to 340 km of ride time. This extended range means less downtime for charging and more time on the bike.
- Sealed, weather-tested construction: The battery housing is fully sealed and has undergone field testing in harsh conditions, including rain, mud, and freezing temperatures. This protects the internal components and ensures consistent performance over time.
- Reliable, system-optimised design: As the central power source for Shimano’s Di2 wireless drivetrain, it supports smooth, accurate shifting. This helps reduce physical effort and maintains shifting precision, even under load.
Most riders investing in a wireless Di2 system want dependable, long-range performance. The BT-DN320 battery delivers this through a compact, durable build and smart energy use. It’s engineered to perform without compromise, helping to keep your drivetrain efficient and reliable, no matter the ride conditions.
Keep your electronic shifting system running at its best with a battery built for reliability, efficiency, and endurance. Get dependable power for every ride.
| Brand | Shimano |
| MPN | BTDN320 |
Our Payment Options
Online we currently accept payment from the methods listed above including a wide range of finance options. In store we also accept payment in the form of cash and gift vouchers.
Finance Options
In order to get the kit you want, when you need it, without ruining the family finances we offer a highly flexible range of finance options to help you get the best products on your bike now rather than at the end of the season when you've saved up the cash to make the purchase. There are even interest free options which effectively spread the cost without costing you any extra.
D.T.(Automotives) Limited T/A Tweeks Cycles is authorised and regulated by the Financial Conduct Authority and is the broker and not the lender. Our FCA registration number is 689896. D.T.(Automotives) Limited offers credit products from Secure Trust Bank PLC trading as V12 Retail Finance and Klarna. Credit is provided subject to affordability, age and status. Minimum spend applies. Not all products offered by Secure Trust Bank PLC are regulated by the Financial Conduct Authority.
UK Mainland Delivery Prices
| Delivery Type | Cost | Estimated Delivery Time |
| Standard Delivery for orders under £49.99 | from £1.33 | 2-3 working days from day of despatch(Excludes weekends and Bank Holidays) |
| Standard Delivery for orders over £49.99 | Free | |
| Express Delivery | from £1.68 | 1-2 working days from day of despatch(Excludes weekends and Bank Holidays) |
| Special Delivery | from £12.54 | For any next working day delivery order before 4pm Monday to Thursday. For any weekend delivery order before 4pm Friday |
| Click & Collect | from £7.62 | Collect your parcel from a local post office. 2-3 working days from day of despatch(Excludes weekends and Bank Holidays) |
For international shipping please visit our delivery page.
For information about returning an item please visit our returns page.