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Charging cable for a USB-C phone or tablet

Get this

Any USB-C to USB-C cable (3 A, 60 W)

Look for

  • A USB PD charger of 20–45 W; the cable is not the limit

Avoid

  • USB-A to USB-C cables on PD chargers: no fast charging

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The power arithmetic

Volts × ampsWattsCable needed
9 V × 3 A27 WAny USB-C to USB-C cable
15 V × 3 A45 WAny USB-C to USB-C cable

Standards behind this answer

2012

USB Power Delivery (60 W, 100 W, 240 W)

The charger and device agree a voltage; the cable decides whether 3 A or 5 A is safe.

  • power: 60 W / 100 W / 240 W