Power your ride
Retaining the same size, mounting, and long battery life as its predecessor, the BT-DN300 Internal Di2 Battery includes an integrated junction and makes wiring the rear triangle of your bike easier than ever.
Two individual wires go from the battery to each derailleur. For fully wired bikes, a third port is included in the new battery.
- Compatible with thinner, next generation electric SD300 wires and R9250 and R8150 series systems
- Features three SD300 wire ports
- Shared attachment method with BT-DN110