CR1632 3V battery for Shimano 12v Di2 road bike handles

Keep your electronic drivetrain running smoothly with the CR1632 3V battery, essential for powering Shimano Di2 12-speed controls. Compatible with Shimano 105, Ultegra and Dura-Ace Di2 groupsets (ST-R7170, ST-R8170, ST-R9270), this lithium button cell battery guarantees reliable wireless communication between your controls and your drivetrain.

Compact and lightweight, the CR1632 fits directly inside each handle. It powers the integrated Bluetooth wireless module for precise, instantaneous gear changes. Easily accessible under the handrest, it can be replaced quickly with a simple screwdriver.

With a stable 3-volt voltage and optimised capacity, this battery offers an average life of around 12 months, depending on use and conditions. To ensure consistent performance, we recommend replacing the batteries in both handles simultaneously.

Key features:

• Compatible with Shimano Di2 12v (105, Ultegra, Dura-Ace)
• CR1632 format - 3V lithium
• Essential for wireless connection of the grips
• Quick, easy installation
• Long battery life (≈ 1 year)

Technical specifications

CR1632 battery

3 Volt

Compatible with Shimano Di2 12v

Group 105, Ultegra, Dura Ace

Sold individually

FAQ - CR1632 battery Shimano Di2

How many batteries do you need for a Di2 12v bike?
You need one battery per handle (so 2 batteries in total for a bike).

How long does a battery last?
On average about 12 months, depending on how often you use it and the weather conditions.

Can I use any brand?
Yes, any quality CR1632 lithium 3V battery (Energizer, Varta, Panasonic, etc.) is compatible.

Is it difficult to replace?
No, just lift up the cooker and open the compartment with a screwdriver.