Always Use a Charger Brick
Nowadays, you’ll find many wall outlets with a USB-C connection so you can charge your device without a charger brick. Likewise, you can use your lightning cable to charge your iPhone by plugging it into your car or your Macbook.
Even though it comes in handy when you only have a cable, it’s not going to be enough to charge your iPhone fast. If you want to charge your iPhone as fast as possible, you’ll need to use a charging brick and lightning cable.