Acer laptop stops charging after a few seconds

Jan 5, 2019
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I plug in my acer laptop to the acer adapter while the laptop is on then after a few seconds the laptop just makes a sound(the sound that my laptop does whenever it gets plugged in and gets unplugged) then ì replug it then the same thing happens so i replug it im very curious why this happens cause the charger is new it shoudn't act like this so i stop using it then i buy a battery cause i see at the charger icon that i should consider replacing the battery so oh maybe thats the problem so i buy a new battery and it still stops charging after a few seconds heeelp pls!!!