Windows 10: The problem how to stop the battery charge at 80% in HP laptop

When I enter my device's BIOS, I can't find an advanced option to choose to turn off the battery at 80%. What is the solution, please?

:)

 

My battery won't charge beyond 80%

I've asked this issue on other Discord channels, but I wanted to post it here.
My model is HP, and entering my model number lists it as Energy Star. Yesterday, this problem has been starting.

So my problem is...My battery will not charge beyond around 80%. It can charge, yes, but the issue is that it only charges up to around 78-80%, then it starts charging spontaneouly. When the laptop stops charging, the LED is white, despite not being fully charged, and if I replug the charger, the LED is still white. Yesterday, I had this dreadful 'Plugged in, not charging' issue, and I temporarily fixed it alongside with the repeated charging and got my laptop to charge to 100%, but the problem reappeared today. *Mad

What is strange that when I asked a user, he replied that the laptop is trying to protect itself from further damage by doing this. What is his logic? I tried the HP diagnosis, and it reported that my battery is healthy and all OK. It doesn't need any battery replacing - besides, my battery is internal so I can't remove it.

I have tried hard reset, and uninstalling battery drivers (Microsoft). Nothing fixed it. I fear my battery might be damaged, but then again could be just my charger. I can't remember when I bought it but it was 3 or 4 years ago and it might be going away soon.

 

Toshiba Laptop Not Holding Battery Charge

attached is a pic of the internal of the laptop
there does NOT appear to be a CMOS battery

what should my next steps be?

- fully charge existing battery and see if i remove it and install back teh next day whether its still fully charged?

- charge the battery for 18 hours to charge the internal CMOS battery?

- suggestions please as Im not sure

 

Battery stops charging at 50%

Apparently there is a setting (on Vaios only?) to limit the battery charging to 50% or 80% to increase useful battery life. I changed it to 80%, now my battery charges to 80%. It is also possible to remove this limit altogether so that the battery charges
to 100%.