SHIMANO 12879 Shifting Internal Battery DI2 D-FLYBT-DN110A7

( Brand: Shimano ), ( Part Type: Internal Battery ), ( Item Height: 1.000 ), ( Item Length: 9.000 ), ( Item Weight: 1.0000 ), ( Item Width: 6.000 ), ( Manufacturer Warranty: No ), ( Manufacturer Part Number: 12879 )

Review SHIMANO Electronic shifting Di2 Internal Battery Compatible

Introducing the Shimano D-Fly BT-DN110A7 Internal Battery for Di2 Electronic Shifting Systems, a compact and powerful solution to extend the riding range of your electronic gear shifts. This internal battery is specifically designed to work seamlessly with Shimano's Di2 wireless electronic shifting systems, providing an uninterrupted and efficient shifting experience.

Measuring just 2.7 x 1.4 x 1.1 inches (68.6 x 35.6 x 28.6 mm) and weighing only 4.4 ounces (125 g), the D-Fly BT-DN110A7 is remarkably small and lightweight. Its sleek design allows for easy installation within the frame, protecting it from the elements and keeping it out of sight.

The D-Fly BT-DN110A7 boasts a capacity of 8.1 watt-hours (Wh), which is approximately 30% larger than its predecessor, the DF-B1. This increased capacity results in an extended riding range, allowing you to enjoy longer rides between battery charges. Additionally, the battery features a USB port for convenient charging using a standard micro-USB cable.

The D-Fly BT-DN110A7 is equipped with Bluetooth technology, enabling communication between the battery and your Di2 shift levers, as well as your smartphone or other compatible devices. This advanced connectivity allows for easy system setup and diagnostics using the E-TUBE PRO APP.

Shimano's internal battery incorporates a battery health indicator, ensuring that you're always aware of the remaining charge level. Moreover, it can be charged while mounted on the bike, allowing for easy top-ups during long rides or multi-day tours.

In summary, the Shimano D-Fly BT-DN110A7 Internal Battery is an essential accessory for anyone using Shimano's Di2 electronic shifting systems. Its compact size, increased capacity, advanced connectivity, and easy charging make it an indispensable tool for extended rides and efficient shifting performance.

Shimano's D-Fly BT-DN110A7 internal battery for Di2 electronic shifting systems is a popular accessory among cyclists. This battery provides on-the-fly adjustments and additional power to the Di2 system. Here are some pros and cons to help you decide if this battery is the right choice for you.

1. Convenience: The D-Fly battery offers the ability to adjust gearing on the fly, allowing riders to shift gears without having to take their hands off the handlebars.

2. Longer Ride Duration: This battery can extend the ride duration of Di2 systems, especially for those who frequently use wireless shifting buttons.

3. Compact Design: The internal battery is more discreet than external batteries, as it is integrated into the bike frame.

4. Improved Shifting Performance: The D-Fly battery can improve shifting performance, especially in challenging conditions, such as steep climbs or harsh weather.

1. Cost: The D-Fly battery is more expensive than external batteries, which can be a deterrent for some riders.

2. Installation Complexity: Installing the D-Fly battery requires more effort than installing an external battery, as it involves drilling a hole in the bike frame and routing wires.

3. Limited Compatibility: The D-Fly battery is only compatible with certain Di2 systems, so it may not be an option for all riders.

In conclusion, the Shimano D-Fly BT-DN110A7 internal battery offers several advantages for Di2 users, including on-the-fly gear adjustments, extended ride duration, improved shifting performance, and a more discreet design. However, it comes with a higher price tag, increased installation complexity, and limited compatibility.

If you frequently use wireless shifting buttons, value the convenience of on-the-fly adjustments, and have a compatible Di2 system, the D-Fly battery may be a worthwhile investment for you. However, if you are looking for a more cost-effective option or prefer the simplicity of an external battery, you may want to consider other alternatives. Ultimately, the decision depends on your personal preferences, riding style, and budget.

Details:

Brand New Shimano Electronic Shifting Di2 Internal Battery Compatible With D-FlyBT-DN110A7. All Di2 components on the bicycle require same firmware version. Item MPN: 12879. Item Brand: Shimano.

part #: 12879 price

• $139.99

specifications velocipedespark:

• brand: Shimano
• part type: Internal Battery
• item height: 1.000
• item length: 9.000
• item weight: 1.0000
• item width: 6.000
• manufacturer warranty: No
• manufacturer part number: 12879

payments velocipedespark:

• other
• credit card: Diners-club
• wallet: Apple-pay

offer velocipedespark:

• options: Ship-to-home
• quantity: 1
• started: August 11, 2025
• availability: In Stock
• sold: 0

general velocipedespark:

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

shipping velocipedespark:

• carrier: FedEx
• transit: 3-7 Days
• service: FedEx Ground / FedEx Home Delivery
• cost: $0.00
• class: Standard
• type: Fixed

returns velocipedespark:

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

seller velocipedespark:

• city: Cass City, Michigan
• rating: 99.4%
• # reviews: 252263

Shimano 12879 Is Similar To:

• Shimano Ismbcr21 Sm-bcr2 Internal Di2 Battery Charger Update Firmware Dura Ace ultegragrx (44.6% similar) Used Shimano SM-BCR2 DI2 charger...(June 19th, 2024)
• Shimano Bt-dn300 Di2 Electronic Internal Battery 12-speed (54.5% similar) Sell // trade: sell/trade-in program FAQs. We clean all parts before selling. To be eligible for a return, the item must in same condition as when it was received. We include key specs and measurements in all listings as well. No functional issues. We create detailed listings...(June 19th, 2024)
• Shimano Cm-1000 Sport Camera With Wifi 32gb Micro Sd Memory Card (34.7% similar) Capture your adrenaline-filled cycling moments with this Shimano sport camera. With its waterproof, lightweight, and shockproof features, you can take it both in doors out doors. This sport camera is made of durable plastic material and has WiFi connectivity for easy transfer files...(June 28th, 2024)
• Shimano 272l0004157 Bt-dn110-a Di2 Battery Built-in For Sm-ew910 Ew-rs910 Sc-mt800sc-m9050 (38.6% similar) Item mpn: 272L0004157. Item brand: Shimano...(July 31st, 2024)
• Magene Pes-p505-165 Pes-p505 Power Meter Crankset 650g 1.5 Accuracy Shimano Compatible (20.8% similar) Super easy calibration operation: support. So that you can record data in multiple terminal for one workout. Ant /Bluetooth connection compatible with various and Bluetooth devices, can be connected to major brand bike computers such as ma gene, Garmin Bryon, etc. It enables riders to grasp the...(August 4th, 2024)
• Shimano Ismdue10a Steps Sm-due10 Speed Sensor Unit With 1400mm E-tube Wire (26.3% similar) Shimano steps SM-DUE10 speed sensor unit with 1400MM e-tube wire. Features: designed to work with all brakes available for Shimano steps bike systems. The Shimano steps speed sensor unit is designed for use with bike drive units. Specifications: designed for bike: yes...(August 6th, 2024)
• Shimano Sm-bcr1 Di2 Electronic Charger For Sm-btr1 Battery (44.4% similar) Our frame and wheel boxes are custom made locally to ensure everything is safe in shipping. Packages lost or damaged in transit. This includes coverage of up to $200 on orders below $750 and $500 for over. Shipping: shipping. This includes details like a thorough visual inspection of...(August 12th, 2024)
• Shimano Sm-btr2 Di2 Electronic Shifting Internal Seatpost Lithium Li-ion Battery (53% similar) This is a used Shimano SM-BTR2 DI2 seat post-mount lithium battery. It is in good condition with one small crack on the connector, but does not affect functionality...(August 14th, 2024)
• Shimano Sm-jc41 Di2 Electronic Shifting Junction Box Ew-sd50 Wire Cable Bundle (45.1% similar) This is a used Shimano SM-JC41 DI2 electronic shifting junction box, with three 3 WE-SD50 wires; 10 850 and 350MM...(August 14th, 2024)
• Shimano Sc-6500 Flight Deck Harness New Battery (37.6% similar) Displays speed, distance, cadence, gear position, and more. Shimano flight deck SC-6500 bicycle computer. Compatible with Shimano sit levers for seamless integration. All necessary mounting hardware. Shimano flight deck SC-6500 cycling computer extras. Backbit display for easy reading in...(August 18th, 2024)
• Shimano 689228417786 Bmdn100 Di2 Long Battery Mount For External Wiring (44.6% similar) Using DI2 components with different firmware versions may cause malfunctions. Shimano BMDN100 DI2 long battery mount for external wiring. Features: all DI2 components on the bicycle require same firmware version. Shimano DI2 external battery mounts...(August 20th, 2024)