Baterry load only till 90%

I remember that on the stock current of the GS290 there was a battery protection function that allowed charging up to 90% of the total battery capacity. This was to extend the battery life. For a week now, my battery only charges up to 90%. However, I can’t find a corresponding setting under eOS. Has anyone noticed similar problems?

My FP3 changed suddenly the “charging speed” so that I could also say it didn’t charge anymore. This was at 78%. But only once.