Samsung SM-A520W User Manual page 13

Basics
1
Connect the USB cable to the USB power adapter, and plug the USB cable into the
device's multipurpose jack.
2
Plug the USB power adapter into an electric socket.
3
After fully charging, disconnect the device from the charger. First unplug the charger
from the device, and then unplug it from the electric socket.
Viewing the remaining charging time
While charging, open the Home screen and tap Apps → Settings → Device maintenance →
Battery.
The actual charging time may vary depending on the status of your device and the
charging conditions. The remaining charging time may not be displayed when you
charge the device in very cold or very hot conditions.
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