SHIMANO 546549 Shifting Internal Battery DI2 D-FLYBT-DN110A7

( Brand: Shimano ), ( Part Type: Internal Battery ), ( Item Height: 2.000 ), ( Item Length: 9.000 ), ( Item Weight: 1.0000 ), ( Item Width: 7.000 ), ( Manufacturer Warranty: No ), ( Manufacturer Part Number: 546549 )

Review SHIMANO Electronic Shifting Di2 Internal Battery Compatible

Shimano D-Fly BT-DN110A7 Di2 Internal Battery

The Shimano D-Fly BT-DN110A7 Di2 Internal Battery is an essential component of Shimano's electronic Di2 shifting system for road bikes. This sleek and compact battery provides power to the electronic shifting components, enabling precise and efficient gear changes.

Design and Build

The D-Fly battery boasts a streamlined design, with a shape that seamlessly integrates with the bike's frame. It is constructed from high-quality, durable materials, ensuring longevity and reliability. The battery measures approximately 115mm (L) x 35mm (W) x 22.5mm (H) and weighs around 125 grams.

Power Capacity and Charging

The BT-DN110A7 Di2 Internal Battery offers a capacity of 50Wh, which is sufficient for most road riding conditions. It can be charged both on and off the bike using the included E-Tube charging cable. The battery features a USB-C port for convenient and fast charging, with a full charge taking approximately 2 hours.

Integration with Di2 System

This internal battery is designed to work seamlessly with the Shimano Di2 electronic shifting system. It communicates with the Di2 components via the E-Tube wiring system, allowing for easy setup and configuration of shifting preferences. The battery also features Bluetooth connectivity, enabling wireless communication with the E-Tube app for remote battery monitoring and firmware updates.

Additional Features

The D-Fly battery includes various safety features to prevent overcharging and overdischarging. It also features a battery indicator, which displays the remaining charge level in real-time via the Di2 shift lever or the E-Tube app. Additionally, the battery can be easily installed or removed from the bike frame without the need for tools.

In summary, the Shimano D-Fly BT-DN110A7 Di2 Internal Battery is a powerful and reliable component of the Shimano Di2 electronic shifting system. Its sleek design, long-lasting capacity, and easy charging make it an ideal choice for road cyclists seeking precise and efficient gear changes.

The Shimano D-Fly BT-DN110A7 is an internal battery for Di2 (Digital Integrated Intelligence) electronic shifting systems. Here are some pros and cons that might help you decide if this battery is worth purchasing:

1. Compact size: The internal battery is designed to be hidden within the bike frame, resulting in a clean and aesthetic appearance.

2. Long battery life: With a capacity of 8Wh, the D-Fly battery can last for up to 1,000 kilometers (621 miles) before requiring a recharge.

3. Wireless charging: The battery can be charged wirelessly using the E-Tube app and a compatible charging pad, making it convenient to charge without removing the battery from the bike.

4. Customizable shifting: The Di2 system allows for precise and customizable shifting, making it easier to adjust gearing to personal preferences and riding conditions.

5. Integrated battery indicator: The battery includes an integrated LED indicator that displays the remaining battery level, making it easy to check the charge status.

1. Higher cost: The internal battery is more expensive than external batteries, which might be a deterrent for some riders.

2. Installation complexity: Installing the internal battery requires drilling holes in the bike frame and running wires through the frame, which can be time-consuming and may require professional installation.

3. Limited compatibility: The D-Fly battery is only compatible with Di2 electronic shifting systems, which might not be the preferred shifting system for all cyclists.

4. No USB charging: The battery cannot be charged using a USB port, which could be a disadvantage for riders who prefer the convenience of charging their devices using the same battery.

The Shimano D-Fly BT-DN110A7 internal battery for Di2 electronic shifting systems offers several advantages, including a clean appearance, long battery life, wireless charging, and customizable shifting. However, it also comes with some disadvantages, such as a higher cost, installation complexity, limited compatibility, and lack of USB charging. Ultimately, the decision to purchase this battery depends on personal preferences and riding needs. If a rider values a clean and aesthetic appearance, long battery life, and customizable shifting, then the D-Fly battery might be a worthwhile investment. However, if a rider prefers a lower cost, external battery, or USB charging, then other options might be more suitable.

For riders who prioritize a clean and aesthetic appearance, long battery life, and customizable shifting, and who are willing to invest in the installation process, the Shimano D-Fly BT-DN110A7 internal battery for Di2 electronic shifting systems is a solid choice. However, for riders who prefer a lower cost, external battery, or USB charging, alternative options, such as the Shimano BT-DN110 or BT-DN111 batteries, might be more suitable. Ultimately, the decision depends on individual preferences and riding needs.

Details:

This listing is for Shimano Electronic Shifting Di2 Internal Battery Compatible W/ D-FlyBT-DN110A7, Must purchase battery, charger, and power cable to complete the system, The designed fit with internal mounts, offering a hidden solution drive trains, Li-Ion battery power, be used E-tube wires only, Not compatible 7970 DI2, Please refer photo more details as they are best part of. Item MPN: 546549. Item Brand: Shimano.

part #: 546549 price

• $139.99

specifications velocipedespark:

• brand: Shimano
• part type: Internal Battery
• item height: 2.000
• item length: 9.000
• item weight: 1.0000
• item width: 7.000
• manufacturer warranty: No
• manufacturer part number: 546549

returns velocipedespark:

• time: 30 Days
• paid by: Buyer
• policy: Returns Accepted
• method: Money back

seller velocipedespark:

• rating: 99.6%
• city: Cass City, Michigan
• # reviews: 269012

offer velocipedespark:

• sold: 0
• options: Ship-to-home
• quantity: 1
• availability: In Stock
• started: October 8, 2025

general velocipedespark:

• condition: New
• Cycling > Bicycle Electronics > Other Bicycle Electronics

shipping velocipedespark:

• transit: 2-7 Days
• class: Standard
• service: FedEx Ground / FedEx Home Delivery
• cost: $0.00
• carrier: FedEx
• type: Fixed

payments velocipedespark:

• other
• wallet: Paypal
• credit card: Visa

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