Shimano BT-R1A Di2 Battery
Best external power source for older electronic shifting system setups.
This essential power unit keeps electronic shifting systems running smoothly. It serves as a direct replacement for aging batteries, ensuring reliable gear changes without needing to upgrade the entire drivetrain.
$99.99
at
PedPow
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Who it's for
- Home mechanics preferring easy access without frame disassembly
- Owners of vintage Di2 groupsets needing specific power solutions
- Commuters riding in harsh weather requiring durable, protected components
Who should skip it
- Aesthetic-focused riders wanting clean, aerodynamic bike profiles
- Weight-conscious riders seeking modern, high-capacity battery performance
- Cyclists riding in environments prone to crashes or debris
Performance breakdown
System Compatibility
Broad support across multiple legacy and current Di2 groupsets.
Weight Efficiency
Lightweight design keeps your bike agile without adding unnecessary bulk.
Installation Simplicity
External mounting makes swapping or replacing the unit straightforward.
Firmware Dependency
Strict firmware matching requirements can complicate initial setup and maintenance.
Component Integration
Reliable power delivery ensures consistent, crisp electronic shifting performance.
Accessory Value
Essential charger and cable are sold separately, increasing total investment.
Key Specs
name
71 grams
Still have a question?
Ask Metto anything about the Shimano BT-R1A Di2 Battery before you decide.
