This Galaxy S21 how-to guide explains everything you need to know on how to charge Galaxy S21 battery properly. The two charging modes (USB cable, wireless charging) are explained and illustrated with detailed steps. Questions related to charging Galaxy S21 battery, including the first time charging, disabling fast charging, overnight charging, topping up the battery, draining up the battery, are answered.
All three Galaxy S21 models (Galaxy S21, S21+, and S21 Ultra) use identical battery and charging technology. So, this guide applies to all these 3 models.
Two charging modes to charge Galaxy S21 battery
You can charge Galaxy S21 battery in two different modes:
- USB cable charging.
- Wireless charging.
These two modes are based on different technologies. And there are different standards for these two charging methods.
USB cable charging
USB cable charging is common among smartphones. Almost all smartphones support USB cable charging.
But charging speed differs dramatically due to various charging protocols supported and wall chargers (adapters) used. Occasionally, even the USB cable may play a role.
Current smartphones support at least 5W USB charging. … Read the rest