You need a powerful adapter and a USB-C to Lightning cable, and then you can use it to fast charge your tablet. By default, the iPad doesn't have a dedicated cable for this, but it can be achieved with a simple conversion cable. Therefore, you need a USB-C to Lightning cable and an Apple 29W USB-C power adapter. The adapter delivers enough juice to fast charge your iPad Pro. Of course, since Apple is Apple, you have to spend $74 dollars for this. Both devices can be acquired from Apple Store.