Shimano BT-DN300 Built-In DI2 Battery
Is the Shimano BT-DN300 the Right Di2 Battery for Your Build?
The Shimano BT-DN300 is the built-in Di2 battery designed specifically for current-generation Dura-Ace 9250 and Ultegra R8150 electronic groupsets. It features three SD300 wire ports that integrate directly with Shimano's latest E-TUBE wiring architecture, supporting the junction-free wiring layout used in the 12-speed Di2 platform. The battery is engineered to fit inside compatible seat posts and frames with internal routing, keeping the exterior of the bike clean and the electronics protected from the elements.
The BT-DN300 charges via the SM-EW-EC300 charging cable, which connects to the charge port on the battery without requiring removal from the bike. The Di2 system requires all components to run matching firmware versions, and the BT-DN300 works with E-TUBE Project software for updates and system configuration. Before purchasing, confirm your frame and seat post support the BT-DN300 dimensions, and note that this battery is not compatible with older Di2 systems using the BCR2 charger or SM-BTR2 battery.
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Shimano BT-DN300 Built-In DI2 Battery
Shimano BT-DN300 Built-In DI2 Battery
Is the Shimano BT-DN300 the Right Di2 Battery for Your Build?
The Shimano BT-DN300 is the built-in Di2 battery designed specifically for current-generation Dura-Ace 9250 and Ultegra R8150 electronic groupsets. It features three SD300 wire ports that integrate directly with Shimano's latest E-TUBE wiring architecture, supporting the junction-free wiring layout used in the 12-speed Di2 platform. The battery is engineered to fit inside compatible seat posts and frames with internal routing, keeping the exterior of the bike clean and the electronics protected from the elements.
The BT-DN300 charges via the SM-EW-EC300 charging cable, which connects to the charge port on the battery without requiring removal from the bike. The Di2 system requires all components to run matching firmware versions, and the BT-DN300 works with E-TUBE Project software for updates and system configuration. Before purchasing, confirm your frame and seat post support the BT-DN300 dimensions, and note that this battery is not compatible with older Di2 systems using the BCR2 charger or SM-BTR2 battery.
Original: $198.99
-70%$198.99
$59.70Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Is the Shimano BT-DN300 the Right Di2 Battery for Your Build?
The Shimano BT-DN300 is the built-in Di2 battery designed specifically for current-generation Dura-Ace 9250 and Ultegra R8150 electronic groupsets. It features three SD300 wire ports that integrate directly with Shimano's latest E-TUBE wiring architecture, supporting the junction-free wiring layout used in the 12-speed Di2 platform. The battery is engineered to fit inside compatible seat posts and frames with internal routing, keeping the exterior of the bike clean and the electronics protected from the elements.
The BT-DN300 charges via the SM-EW-EC300 charging cable, which connects to the charge port on the battery without requiring removal from the bike. The Di2 system requires all components to run matching firmware versions, and the BT-DN300 works with E-TUBE Project software for updates and system configuration. Before purchasing, confirm your frame and seat post support the BT-DN300 dimensions, and note that this battery is not compatible with older Di2 systems using the BCR2 charger or SM-BTR2 battery.











