Everything You Need To Know About The Shimano Di2 Battery

If you have an external wired set-up and want to change your older Shimano Di2 drivetrain to a Bluetooth wireless interface,

Shimano Di2 BM-DN100 Short Battery Mount

The Shimano Di2 BM-DN100 External Battery Mount - Short allows for mounting the BT-DN110 battery to the frame's water bottle cage mounts with external or internal wiring. The mount allows for wireless communication with the EW-WU101 wireless data transmitter unit and Bluetooth components. Battery sold separately.

Shimano Di2 BM-DN100 Short Battery Mount

Di2 Battery Mount Problem

Shimano Di2 : Fingers On. Di2 Review

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How to Charge Shimano Di2 Battery

Di2 Shimano® Electronic Intelligent System Installation

Old version of Di2, battery is toasted. Are new batteries backwards compatible? If not, does anyone know where you can get these or what model # they are? : r/bikewrench

DIY fix when Di2 charger's error light keeps flashing

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What is inside of a Shimano Di2 Internal SM-BCR2 Battery

Beginner's guide to Di2 and electronic shifting How it works, tips, and is it worth the upgrade?

SHIMANO Di2 Deep Dive