From the manufacturer
Lightning Speed Lightning Cable
Boost Charge USB-C Cable with Lightning Connector
With the Boost Charge USB-C Cable with Lightning Connector, you can leverage the latest fast charging standard, USB Power Delivery. Connect your USB PD-enabled iPhone or iPad to a USB-C fast charger for a quick power boost, or sync photos and videos with your MacBook Pro.
- USB Power Delivery feature requires USB PD-enabled device and 18W or higher USB-C charger (not included)
Supports USB Power Delivery Fast Charging
Take advantage of the Fast Charge feature on your iPhone 8 or later—charging up to 50 percent in 30 minutes* when paired with an 18W or higher USB-C power adapter.
*Charge time varies with environmental factors; actual results will vary.