Check your Charger Connection Samsung (Galaxy A13)

Check your Charger Connection Samsung Galaxy smartphone.
Check the USB end that plugs into your adapter and make sure its all the way in.
Check the end that connects to your phone and make sure it plugged in fully.
Make sure there is no lint or dirt or other obstruction in the USB port of the adapter.
Make sure there is no lint, grime or dust or other obstruction in the charge port of your phone.
Switch out USB cable or adapter for a new one.

When done correctly the error will go away and your phone will charge fully as it should at the rated speed of the adapter.

Check your charger connection Samsung A02
Check your charger connection Samsung A03
Check your charger connection Samsung A12
Check your charger connection Samsung A13
Check your charger connection Samsung A14
Check your charger connection Samsung A15
Check your charger connection Samsung A25