Laptop got weaker without a power cord?

I'm playing league of legends and it has always had a solid 100-120 fps without a power cable, but recently I only have 60 fps and if I connect it to the power cable 140fps what happened?

Laptops usually give less power when they run on battery to save the battery.

You can change that in the energy savings plan.

Yes, but earlier that would be fine

Either that or the batteries simply can't deliver more power.

The magic word is "energy saving settings"
Maybe Winzigweich changed the settings for a update or something.

Need more fps, more electrical energy. The fps are reduced in favor of the battery life if no power supply is connected.

Then the batteries are likely to have aged / can't deliver as much power as @ ModernSlang17 suspects

It's very interesting.

Enlighten me?

Clarify me what fps have to do with the power supply.

Should the graphics card conjure up images from nowhere?

You wrote that more fps require more "electrical energy".

Bravo, you can read.

So you make claims in the room and can't prove them. Bravo.

Watch a movie in the cinema for 2 hours, then project a still image on the same surface for 2 hours and compare. In order for the graphics card to pin images to you on the screen in a uniform time, it needs energy. This can be seen as a form of work. If the output is increased, but the calculation time should remain the same, more work is inevitably done. I.e. Converted more energy. The difference between 60 and 90 fps on the electricity bill is certainly marginal but there!

But probably essential for a battery. Otherwise there would be no such energy saving settings.