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SKU: BA7970

Shimano BT-R1A External Di2 Road Bicycle Battery - Lightweight, Universal Electronic Shifter Power Supply for Dura-Ace, Ultegra, Alfine Di2 Systems with Firmware Compatibility and Performance-Driven Engineering

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Description
Specifications

Upgrade your road cycling setup with the Shimano BT-R1A External Di2 Battery, a high-performance, lightweight power source designed for premium electronic shifting systems. Crafted with precision engineering and advanced materials, this electronic road bicycle shifter component ensures seamless power delivery, reliable operation, and enhanced shift responsiveness for competitive riding and everyday cycling alike.

Materials & Construction

Built from durable, lightweight materials, the Shimano BT-R1A External Di2 Battery weighs only 71 grams, reducing overall bike weight without compromising durability. Its robust design ensures consistent performance in various weather conditions, making it an ideal choice for serious cyclists seeking reliability and efficiency.

Performance & Engineering

Engineered for optimal power management, this external battery is compatible with multiple Shimano Di2 systems, including Dura-Ace 9070, 7970, Ultegra 6870, 6770, and Alfine Di2 models. Its universal compatibility ensures a versatile upgrade, supporting smooth, precise shifting across different groupsets. Regular firmware updates via the Di2 System Checker ensure your system operates flawlessly, maintaining compatibility and performance integrity.

Components & Technology

This Di2 external battery integrates seamlessly with Shimano's advanced electronic shifting technology, providing instant and crisp gear changes. The package includes the battery, charger, and power cable, which are compatible across Shimano's high-end Di2 road, mountain, and urban cycling systems, simplifying setup and maintenance.

Style & Use Case

Designed for serious road cyclists and racers, the Shimano BT-R1A Battery offers a sleek, minimalist look that complements high-performance bike builds. Whether upgrading an existing Di2 system or building a custom electronic road bike, this power source provides reliable energy delivery for aggressive riding, long-distance endurance, or competitive events.

Innovative Features

- Universal compatibility with multiple Shimano Di2 systems

- Lightweight design at just 71g for minimal weight penalty

- Easy firmware updates through Shimano's official Di2 System Checker platform

- Robust construction for reliable performance in all conditions

Maximize your electronic shifting performance with the Shimano BT-R1A External Di2 Battery-your essential component for smooth, responsive, and reliable gear changes on every ride. Ensure you purchase the compatible battery, charger, and power cable to complete your Di2 setup for optimal cycling performance.

  • Universal Compatibility with High-Performance Shimano Di2 Systems: Designed for Dura-Ace 9070, 7970, Ultegra 6870, 6770, and Alfine Di2, this external battery ensures seamless integration across top-tier road bike electronic shifting setups.
  • Lightweight and Durable Construction: Weighing only 71 grams, this compact Di2 battery is engineered with premium materials to deliver reliable power without adding unnecessary weight, perfect for aggressive racing and endurance rides.
  • Advanced Firmware Compatibility: Maintains consistent system performance by requiring all Di2 components to run the same firmware version; utilize the Shimano E-Tube Project System Checker to keep your firmware updated for optimal shifting reliability.
  • Optimized for Performance & Efficiency: Supports rapid charging and long-lasting power delivery for electronic shifting components, enabling precise, responsive gear changes on demanding climbs and fast-paced racing.
  • Versatile and Future-Ready Design: Compatible with popular Shimano road electronic systems like Dura-Ace and Ultegra, this external Di2 battery is an essential upgrade for cyclists seeking reliable, maintenance-free electronic shifting on their road bikes.
Shifter/Derailleur CompatibilityDura-Ace 7970 Di2
Shifter/Derailleur CompatibilityDura-Ace 9070 Di2
Shifter/Derailleur CompatibilityShimano Ultegra Di2
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365 Cycles puts the customer above everything. Our number one goal is your satisfaction. When you press the shift lever you want the gears to shift, and when you buy bicycle parts, you want the bicycle parts to arrive on time in new condition. With over 60,000 products and 22 warehouse locations throughout the country, we have the parts you need and they are coming in hot!

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Over the years we have served millions of satisfied customers and continue to serve many of them today. With your feedback, we are confident we can take this lifelong journey together and build a friendship that goes beyond parts and accessories.

“If you want to go fast, go alone, if you want to go far, go together.” -Someone Smart

Ben Berman Founder & CEO of 365 Cycles


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These were established by the members of our team and we use them every week to call out team members who have shined in one of these areas. Feel free to let us know at info@365cycles.com if someone you worked with has gone above and beyond in one of these areas. 

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