With the right Samsung Galaxy S21 or S20 charger, you can quickly charge your Samsung smartphone. All Samsung S21 fast chargers on this page can charge your phone for 40% in half an hour. With a 25W Super Fast Charging charger, you can charge even faster. After half an hour, your battery is at 60%. This charger comes with the Samsung S20 by default, but the Samsung S21 only comes with a USB-C to USB-C cable. Buy a separate Samsung S21 fast charger if you want to use the included cable. Do you choose a charger with a cable? Choose a nylon cable. These last longer than a plastic cable.