I have had the problem for months that my laptop stops charging from 100% battery level and when it drops to 99% it starts to charge again.
This is particularly annoying because my laptop does not run at full power when it is not charging.
I ask for help because I have not found any of them on the Internet!
This is because the battery can no longer take up the capacity. It is also generally not recommended to have devices with a lithium-ion polymer battery permanently on the power. This significantly shortens the life of the battery.
You can't get more than 100%. Therefore, the charging electronics switch off and on again when the state of charge is not 100%.
If the "Lappy" is not running at full power, you have to look in the settings to see whether Something like a "strong energy saving mode" is set.
In the power management tools of your operating system, you can set whether the processor should run in power saving mode (then it is slower but uses less power) or not.
If you turn off the power saving mode, the computer always runs at "full throttle", no matter how full the battery is.