It is designed for Shimano's 12-speed Di2 charging interface, covering Dura-Ace R9200/R9250, Ultegra R8100/R8150, and 105 R7100/R7150 derailleurs, along with equivalent Di2 groupsets that use the same 4-pin port. If your bike uses an older 11-speed Di2 system or you are not sure which generation you have, it is worth confirming with us before ordering, since the charging port design differs on earlier Di2 setups.

Yes, that is exactly the convenience this wire is built for. Once connected to your derailleur, the Type-C end works with any standard 5V charging source, including the same USB-C phone charger or power bank you already carry. We recommend using a reasonably branded power source that supplies a stable 5V output, since unbranded or very cheap chargers can sometimes deliver inconsistent voltage.

It is plug and play: connect the 4-pin end into your derailleur's charging port and the Type-C end into your power source, no tools needed. Once you have this wire, you do not need to carry the original OEM Shimano charging cable at all, which is why many riders keep this in a saddle bag or bikepacking kit as their main charging solution.

This is a third-party wire built to match Shimano's 12-speed Di2 charging interface, not an official Shimano-branded cable. It uses a reinforced 4-pin connector for a secure fit during charging and includes basic safeguards against overheating and short circuits, so it is fine for regular use as long as you charge it with a properly regulated 5V power source.

Yes, this is exactly the kind of accessory riders pack for long rides, races, or bikepacking trips where a dead Di2 battery would otherwise mean the end of electronic shifting. It is small enough to tuck into a saddle bag or jersey pocket, so you can inject a quick emergency charge from any power bank when your battery runs low, without needing to plan around finding your original charger.

If your wire arrives faulty or stops charging your Di2 system correctly under normal use, contact our support team with your order number and we will arrange a replacement. Since the connector houses fine pins, we recommend storing it in a small pouch rather than loose in a bag to avoid accidental bending.

Orders are typically dispatched within 3 working days of order confirmation. Actual delivery time after that depends on your pin code and courier serviceability in your area. All orders on DoGoodCo are prepaid at checkout, so cash on delivery is not available at this time.