My laptop turns off even though it still has enough battery?

For some time now my laptop has suddenly switched off, even though it still has enough battery. Nowhere is it indicated that something is wrong. Does anyone know anything about it? It's pretty annoying when I want to watch a series or do something else on the laptop and it suddenly turns off without warning.

Maybe overheated? Fans may be cleaning.

Does this happen sporadically or usually "always" after a certain time?

Is it used on the sofa or in bed?

Does that happen often?

When does that normally happen?

If the fan is defective / dirty, the notebook overheats and switches off automatically. Hold the vacuum cleaner to the ventilation slots, which helps if it is just too much dust.

On the couch.

Yes, even daily. He didn't do that before.

Actually, whenever I use it longer.

After a certain amount of time. So after about an hour.

No matter what activity? So no matter what you have open?