Samsung Galaxy S21 fast chargers

With a Samsung Galaxy S21 fast charger, you can charge your S21, S21 Plus, or S21 Ultra extra quickly. The fast Samsung 25-watt Power Delivery charger fully charges your battery in just over an hour. If you have a Power Delivery or Quick Charge charger with less than 25 watts of power, that takes about 1.5 hours. That is still about twice as fast compared to a charger without fast charging. Chargers with a higher wattage won't damage your battery, but also won't charge your S21 extra quickly. A charger isn't included with the S21, only a USB-C fast charging cable. Combine it with a separate USB-C charger or choose a charger with cable if you want an extra one.

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