Shimano Di2 12-Speed Essential Power & Wiring Kit (BT-DN300 Battery + Charger + Cables)

Complete Di2 Electronics Add-On: Everything you need to power up and wire a 12-speed Shimano Di2 groupset.

Complete your 12-speed electronic groupset installation with the Shimano Di2 Essential Power & Wiring Kit. This package contains all the crucial power and connectivity components required to link your rear derailleur, front derailleur, and central battery into a reliable, high-performance system.

Designed for Shimano’s latest 12-speed Di2 semi-wireless platform, the core of this kit is the BT-DN300 internal battery, offering long-lasting power storage neatly tucked away inside your seatpost.

The bundle features two EW-SD300 electric wires in the most common road bike frame lengths:

• 600mm wire: Routes directly from the central battery to the Front Derailleur.

• 1200mm wire: Routes from the central battery to the Rear Derailleur.

When it’s time to top up, the included EW-EC300 magnetic charging cable plugs straight into the port on the rear derailleur, eliminating the need to dismantle or unseat any frame components.

Whether you are building a new custom bike or pairing this kit with a core groupset bundle, this pack delivers a plug-and-play setup.

What’s In The Box