Shimano EW-EC300 charging cable for 12-speed Di2 systems with a built-in battery (BT-DN300). One end plugs into a USB-A power source; the other connects to the charging port on the rear derailleur to charge the system's internal battery. The same cable also charges Shimano 12-speed power meter cranksets. Cable length 1700mm.

Fits

  • RD-R9250 (Dura-Ace 12-speed Di2 rear derailleur)
  • RD-R8150 (Ultegra 12-speed Di2 rear derailleur)
  • FC-R9200-P (Dura-Ace 12-speed power meter crankset)
  • Other 12-speed Di2 systems using the BT-DN300 internal battery

Not compatible with 11-speed Di2 systems.

Covered by Shimano's spare-parts warranty against manufacturing defects. For warranty support, return the item to Tune Cycles.

  • Charging cable for Shimano 12-speed Di2 systems with built-in battery (BT-DN300)
  • Charges via the rear derailleur charging port (RD-R9250 / RD-R8150)
  • Also charges Shimano 12-speed power meter cranksets (e.g. FC-R9200-P)
  • USB-A connector; use a 5V DC / 1.0A or higher supply
  • Cable length: 1700mm
  • Not compatible with 11-speed Di2
Part number EW-EC300
Type Di2 charging cable
Connector USB Type-A
Cable length 1700mm
Fits 12-speed Di2 with BT-DN300 (RD-R9250, RD-R8150); FC-R9200-P power meter
Not compatible 11-speed Di2
SKU SHM-IEWEC300A
Barcode # 4550170889807
Brand Shimano