Shimano Di2 BT-DN320 Battery - XTR/DEORE XT/DEORE/GRX Wireless Di2 System

The Power Source of the Wireless Revolution

The Shimano BT-DN320 is a completely new generation battery at the heart of the brand's revolutionary wireless Di2 technology. Unlike traditional Di2 systems, this battery is not hidden in the bike frame; it is integrated directly into the rear derailleur. This enables a completely wireless shifting experience. It is specifically designed for the top-of-the-line wireless derailleurs of the XTR, DEORE XT, DEORE, and GRX groups.

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Technical Specifications

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Innovative Design Philosophy

Conservation-Oriented Geometry

The BT-DN320 battery, with its flat, wedge-shaped design, fits perfectly into the new generation of wireless Di2 transceivers. The most important advantage of this design is protection: the battery is stored in a completely sealed compartment inside the transceiver's housing. It remains stable and impact-free, even on the roughest terrain. The philosophy is simple: "A part that doesn't get hit won't break."

Intelligent Response on Impact

The system doesn't just offer passive protection. The derailleur has an automatic impact recovery function that activates when it is subjected to an impact. Upon impact, the derailleur motor, thanks to its flexible structure, slides to absorb the force of the impact and then instantly returns to its original position. This mechanism is a critical engineering solution that prevents costly derailleur repairs.

Durability Engineering

The wide joint structure, durable carbon plate, anti-slip plate design, and robust derailleur pulleys, combined with the battery protection system, are part of Shimano's most robust derailleur design to date. It is designed to meet the demands of real-world racing conditions.

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Performance and Usage

Capacity and Range

The 305mAh nominal capacity provides enough energy for long rides on a single charge. With a fully charged battery, it offers uninterrupted gear shifting for weeks, or even hundreds of kilometers with heavy use. Low power consumption is one of the most well-known features of Shimano Di2 systems.

Charging Process

The battery can be charged by completely removing it from the derailleur. This eliminates the need to carry the bike to a charging cable; you can conveniently charge the battery at home or in the office.

Important Warning: The EC-DN100 charger is not included in this product. It must be purchased separately.

Weight Advantage

Weighing approximately 22 grams, the BT-DN320 adds a negligible amount to the overall weight of your bike. This is a significant advantage, especially for race-focused users.

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Compatible Groupsets and Transmitters

The Shimano BT-DN320 battery is fully compatible with the following wireless Di2 rear derailleur models:

• XTR Di2 RD-M9250 - The pinnacle of mountain bike racing.

• DEORE XT Di2 RD-M8250 - Professional-level performance

• DEORE Di2 RD-M6250 - Entry-level wireless Di2 experience

• GRX Di2 RD-RX827 - Specifically designed for gravel roads and cyclocross.

All of these derailleurs offer Shimano's legendary ultra-precise and lightning-fast electronic shifting capabilities wirelessly.

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Box Contents

• 1 x Shimano Di2 BT-DN320 Battery

• Original Shimano packaging

The charger (EC-DN100) is absolutely not included. This product is the battery only.

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Frequently Asked Questions

Q: Can this battery be used in older Di2 systems?
C: No. The BT-DN320 is designed only for the new generation wireless Di2 transmitters mentioned above. It is not compatible with traditional wired Di2 systems or older generation batteries.

Q: What is the battery life?
C: Shimano states that their Di2 batteries are manufactured to maintain high performance for hundreds of charging cycles. Depending on usage frequency, years of trouble-free use can be expected.

Q: What is the charging time?
C: With the EC-DN100 charger, it takes approximately 1.5-2 hours to fully charge an empty battery.

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Why Shimano BT-DN320?

• Guaranteed genuine Shimano spare parts.

• An essential component of the fully wireless Di2 experience.

• Long lifespan thanks to its protected design.

• Weighing only 22 grams

• High-capacity Lithium-ion technology

• Fully compatible with XTR, DEORE XT, DEORE and GRX wireless transmitters.