Battery defective or laptop defective?

The laptop does not charge even if it hangs on the cable. It is always completely empty. When I start the laptop with a cable, it works for a while. If I then open a video, it is suddenly completely out, even though it is attached to the charging cable. Shouldn't he actually have to stay on even when the battery is over, even if the battery is dead?

Is the battery or laptop over?

Appreciate both. The Läppie should have power when used with cables

Acer laptop? Have the same problem, is the battery.

I think he is from Acer