Shimano EW-EC300 Di2 Charging Cable 1700mm

Shimano EW-EC300 Di2 Charging Cable 1700mm

$53.99 AUD
$53.99 AUD
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Shimano EW-EC300 Di2 Charging Cable 1700mm
  • Shimano EW-EC300 Di2 Charging Cable 1700mm
  • Shimano EW-EC300 Di2 Charging Cable 1700mm
Shimano EW-EC300 Di2 Charging Cable 1700mm

Shimano EW-EC300 Di2 Charging Cable 1700mm

$53.99 AUD
$53.99 AUD
Taxes included. Shipping calculated at checkout.

The Shimano EW-EC300 Charging Cable is an essential genuine Shimano Di2 service accessory that keeps modern 12-speed Dura-Ace and Ultegra electronic drivetrains charged, reliable and ready for fast road rides, racing, training and long-distance cycling across Brisbane, Queensland and Australia.

EW-EC300 Features

  • Genuine Shimano charging cable for latest 12-speed Di2 road systems
  • Connects directly to compatible Shimano Di2 rear derailleurs for easy on-bike charging
  • Also compatible with selected Shimano power meter cranksets
  • Simple USB Type-A connection for convenient home or workshop charging
  • Essential spare or replacement cable for road bike service, Di2 diagnostics and travel

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Key Features & Technical Specifications

Technical Specifications

  • Product Name: Shimano EW-EC300 Charging Cable
  • Model: EW-EC300
  • Product Type: Di2 charging cable / charging connector
  • Compatibility: Shimano Dura-Ace R9200 Di2, Shimano Ultegra R8100 Di2 and compatible Shimano 12-speed Di2 systems
  • Compatible Rear Derailleurs: Shimano RD-R9250, RD-R8150 and other compatible Shimano 12-speed Di2 rear derailleurs
  • Power Meter Compatibility: Compatible with Shimano FC-R9200-P and selected Shimano power meter cranksets
  • Cable Length: Retailer-listed as 1700mm; Shimano specification may vary by market and commonly lists approximately 1.5m
  • USB Connector: USB Type-A
  • Charging Port Connection: Shimano Di2 rear derailleur charging port / compatible Shimano power meter charging port
  • Colour: Black
  • Wall Plug Included: No, USB wall adaptor not included
  • System Type: Shimano 12-speed Di2 electronic shifting
  • Battery System Supported: Shimano internal Di2 battery systems such as BT-DN300 when used with compatible Di2 rear derailleurs
  • Recommended Use: Road cycling, Di2 charging, electronic drivetrain service, workshop use, travel spare, race-day preparation
  • Compatible Bike Type: Road bikes, aero road bikes, endurance road bikes and performance bikes with Shimano 12-speed Di2 systems
  • Rider Weight Limit: Not applicable

Compatibility Notes

  • Designed for Shimano’s latest SD300 12-speed Di2 road systems.
  • Not intended as a direct replacement charger for older 11-speed Di2 systems that use previous-generation charging interfaces.
  • Requires a compatible Shimano Di2 rear derailleur or Shimano power meter charging port.
  • Use with a suitable USB power adaptor or USB charging port.
Notable Tech, Materials & Construction

Genuine Shimano Di2 Charging Interface

The EW-EC300 is designed specifically for Shimano’s modern Di2 electronic shifting ecosystem, giving riders a secure and reliable connection for charging compatible Dura-Ace and Ultegra 12-speed systems.

Direct Rear Derailleur Charging

Unlike older Di2 setups that often used separate junction boxes or different charging ports, current Shimano 12-speed road systems charge through the rear derailleur. This makes the charging process simple, clean and convenient.

USB Type-A Connection

The cable uses a USB Type-A connector, making it easy to plug into common USB wall chargers, workshop charging stations, laptop ports or travel adaptors.

Shimano Power Meter Compatibility

The EW-EC300 can also be used with selected Shimano power meter cranksets, making it particularly useful for riders running a complete Shimano Dura-Ace or Ultegra electronic drivetrain and power meter setup.

Practical Workshop and Travel Design

The cable is lightweight, compact and easy to store in a workshop drawer, travel case or race-day tool kit. For riders who rely on Di2, having a spare charging cable is a smart way to avoid missed rides caused by a flat battery.
Size, Fit, Geometry & Measurements

Cable Length

  • Retailer-listed length: 1700mm
  • Manufacturer listings may vary by region and may specify approximately 1.5m

Connector Type

  • USB Type-A on one end
  • Shimano Di2 / power meter charging connector on the other end

Fitment Use

Designed to connect to:

  • Compatible Shimano Di2 rear derailleur charging ports
  • Compatible Shimano Dura-Ace and Ultegra power meter cranksets
Who it is best suited for and How it performs in local conductions

Best Suited For

  • Shimano Dura-Ace R9200 Di2 riders
  • Shimano Ultegra R8100 Di2 riders
  • Riders with Shimano FC-R9200-P power meters
  • Cyclists replacing a lost or damaged Di2 charger cable
  • Riders wanting a spare Di2 charging cable for travel or racing
Industry Feedback, Rider Reviews and our own opinion

BikeRadar’s August 2021 coverage of Shimano Dura-Ace R9200 highlighted the move to Shimano’s updated 12-speed Di2 platform, including improved drivetrain integration and a cleaner electronic setup. Gran Fondo Cycling Magazine’s August 2021 first-ride coverage also noted the refined Di2 system layout, wireless cockpit controls and modern charging approach. FeedTheHabit’s May 2023 long-term review of Dura-Ace R9200 Di2 praised the system’s clean integration, precise shifting and ease of use during regular riding.
Product Care & Warranty Info

BikeRadar’s August 2021 coverage of Shimano Dura-Ace R9200 highlighted the move to Shimano’s updated 12-speed Di2 platform, including improved drivetrain integration and a cleaner electronic setup. Gran Fondo Cycling Magazine’s August 2021 first-ride coverage also noted the refined Di2 system layout, wireless cockpit controls and modern charging approach. FeedTheHabit’s May 2023 long-term review of Dura-Ace R9200 Di2 praised the system’s clean integration, precise shifting and ease of use during regular riding.