Recharge the empty battery of your Apple iPhone Xs, Xs Max, or Xr with a charger for your iPhone. The Xs, Xs Max, and Xr models used to come with a slow 5W charger. With a 20W fast charger for your iPhone Xs / Xs Max, you can charge your device over twice as fast. After half an hour of charging, your battery is already 50% full. With a 5W charger, you only get 17% in that same time. An iPhone fast charger works via Power Delivery and has an oval USB-C port. You get a charging cable with your new iPhone. Don't have one yet? Choose a charger with USB-C to Lightning cable. This cable fits on fast chargers, but not the old USB-A chargers.