Technical sheet

Shimano BT-DN320 Di2 battery

Name: Shimano BT-DN320 Di2 battery
Brand: Shimano
SKU: 142233731
Price: 32.99 EUR
Availability: InStock
Rating: 5 (8 reviews)

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8 Reviews

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Features of Shimano BT-DN320 Di2

Product description of Shimano BT-DN320 Di2 battery

Description summary

Power your 12-speed Di2 drivetrain with the SHIMANO BT-DN320 battery. This compact, built-in lithium-ion cell (310 mAh) offers exceptional longevity, supporting thousands of kilometers on a single charge for worry-free epic rides and races. Its integrated design within your seatpost or rear derailleur ensures unwavering reliability and protection from the elements and impacts, providing a stable power supply for flawless, instantaneous gear changes. Simplified charging and a streamlined system create a cleaner, more aerodynamic setup

SHIMANO BT-DN320 Di2 Battery: The Heart of Your 12-Speed Electronic Drivetrain

Experience the pinnacle of electronic shifting performance with the SHIMANO BT-DN320 Di2 Battery, the central power source engineered for Shimano´s revolutionary 12-speed Di2 road and MTB groupsets. This built-in battery is the silent, reliable engine that drives the flawless, instantaneous gear changes you demand, ensuring your drivetrain is always ready for the next climb, sprint, or technical descent. As the core of Shimano´s latest wireless-enabled systems, the BT-DN320 represents a leap forward in integration, longevity, and reliability for the modern cyclist.

Key Benefits

Unwavering Reliability and Protection
Engineered as a "Battery Built-In Type," the BT-DN320 is designed to be securely housed within your bicycle´s seatpost or, for MTB applications, directly inside the new wireless XTR rear derailleur. This integrated design means the battery is exceptionally protected from the elements, impacts, and vibrations. Tucked safely inside an enclosed space, the battery won´t budge even on the roughest singletrack or harshest cobblestones, providing a stable and consistent power supply for unwavering shifting performance when you need it most. Despite its protected nature, it remains completely removable for charging and maintenance.

Exceptional Longevity for Extended Rides
Spend more time riding and less time charging. The BT-DN320 boasts a high-capacity 310 mAh lithium-ion cell, offering an impressive lifespan that supports thousands of kilometers of riding on a single charge. This exceptional longevity translates to worry-free performance, allowing you to tackle epic multi-day adventures, long training blocks, or an entire race season without battery anxiety. The power to perform is always on tap.

Streamlined Integration and Simplified Charging
The advent of full wireless technology demanded an all-new battery, and the BT-DN320 delivers. By acting as the central power hub for both the front and rear derailleurs (connected via thin SD-300 wires), it dramatically simplifies the Di2 system, enabling a cleaner, more aerodynamic, and lighter build. Charging the system is more convenient than ever, typically accomplished via a charge port directly on the rear derailleur, eliminating the need for separate junction boxes and making it easy to top up your power.
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Attributes: Batteries, Transmission
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Technical Specifications

Product: Di2 Rear Derailleur Battery

Model: BT-DN320
* Chemistry: Lithium-Ion
* Rated Capacity: 310 mAh (0.5 Ah)
* Rated Voltage: 7.4V
* Compatibility: Shimano 12-Speed Di2 Road (Dura-Ace R9200, Ultegra R8100) and MTB (XTR M9100, DEORE XT M8100) systems
* Connection: 3 E-TUBE ports (SD300 type)
* Primary Function: Powers front and rear Di2 derailleurs
* Placement: Internal (Seatpost, Frame, or Rear Derailleur)

Specifications

Manual

Technical specifications of Shimano BT-DN320 Di2

Features of Shimano BT-DN320 Di2

Color Silver

Color

Silver

Product Type Lithium batteries

Product Type

Lithium batteries

Subcategories Transmission

Subcategories

Transmission

Key differentiators

Technology in Shimano BT-DN320 Di2 battery

Energy rating

Warnings

5 / 5

8 Reviews

What our customers are saying about Shimano BT-DN320 Di2 battery

This e-bike battery offers excellent durability and reliability. Its compact, integrated design protects it from impacts and dirt while remaining easy to remove for charging. Users report fantastic battery life, easily powering multiple rides and holding charge well even under intense use. Expect reasonable battery drain, with minimal usage after several hours of cycling. This rechargeable battery is a durable, worthwhile investment for extended e-bike adventures

High-quality battery

2026/09/29

CARLOS

High-quality Shimano battery, long-lasting and fast charging

To carry on long routes

2026/06/04

Jorge

I bought it for bikepacking routes where you have to carry spare parts for almost everything. It´s the original and weighs quite little. It can be carried in any pocket of the bag

Light

2026/05/30

olivier

Very pragmatic battery and having one with you during a Gravel outing is very helpful

Battery for DI2 XT replacement

2026/05/28

Jesus

I bought it as a second battery, to carry in my backpack since I do a lot of mountain biking on trails and rough roads with ups and downs, which makes me use the gears a lot

good battery

2026/04/09

luiz

compacta e integrada ao câmbio, a bateria fica protegida contra impactos e sujeira, sem comprometer a remoção para recarga. Oferece boa autonomia para várias pedaladas, mantendo o sistema confiável mesmo em uso intenso.

It works correctly

2026/03/09

Borja

I bought it to have a second unit and rotate them, and the truth is that the durability is quite good, I thought I´d have to change them more often, but they last a good while, at least when they´re new

Perfects

2025/11/16

Fernando

Durable and easy to remove. I've tested it several times, and the battery drain is very reasonable. I used it for two 3-hour outings, and it didn't even reach 50%. I consider it a recommendable product, and the price is reasonable. I bought it, and it arrived in a few days.

Compact

2025/07/27

Juanfran

I have already used it on a couple of occasions, the truth is that it is very easy to put on and take off and has fantastic durability.

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Product description of Shimano BT-DN320 Di2 battery

Technical specifications of Shimano BT-DN320 Di2

Color Silver

Product Type Lithium batteries

Subcategories Transmission

What our customers are saying about Shimano BT-DN320 Di2 battery

Use cases

Best for

Benefits

Ideal buyer profiles

Competitive features