Battery Shimano Di2 BT-DN300 Internal

The Shimano BT-DN300 is an internal Di2 battery that mounts inside the seatpost or frame. It keeps the bike's lines clean and out of sight.

• Type: Built-in Di2 battery
• Wiring: Made for Shimano's thinner SD300 electrical wire
• Ports: A third port adds redundancy for wired Di2 setups
• Mounting: Uses the same mounting method as the BT-DN110

Ask us to confirm compatibility with your Di2 groupset and frame before installing.