Battery Shimano Di2 BT-DN300 (2nd Gen.) Built-In Type

Shimano DN300 battery for Di2 systems features the same waterproof design that Di2 users have loved for generations. Now with 3 ports, it delivers stable power to Shimano's 12-speed road derailleurs and shifters (if a fully wired option is selected). With the same size as its predecessor, the slim DN300 battery can be housed inside seat posts or frames ensuring a clean aesthetic. Now with 3 ports, the DN300 simplifies wiring to front and rear derailleurs, supplying stable power at all times. The third port is for riders who seek the redundancy of Shimano's 12-speed Di2 wired option. Compatible with thinner next generation electric wire SD300 and systems after R9250/R8150 series3 x SD300 portsShared fixing method with BT-DN110Weight: 52 gFixing smallparts and 3dummy capincludedBuilt-in batteryFirmware update by E-TUBE PROJECTMaster unitBattery type: Li IonRated capacity: 3.7 Wh / 0.5 AhRated voltage: 7.4 VSD300 connector (pcs): Not availableSD300 port (pcs): 3SD50 connector (pcs): Not availableSD50 port (pcs): Not availableMaximum range: approx. 2000 km Charging time: 1.5 hours Bluetooth: Bluetooth LE (Low Energy) compatible Diameter: 16.5 mm Length: 155 mm EW-SD300 cable is NOT INCLUDED