How to limit laptop battery charge to 80%?

Question

Lenovo

Good evening. I appeal to the owners of the laptop Lenovo x230i.
If your goal was to limit the battery level to 80% to "prolong its life, then how did you implement this?
At the moment, I did it through the tlp package on ubuntu, but this function works as long as linux is loaded. When loading into windows , or the laptop is turned off - the charge reaches 100% again.
Help with advice, please.
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I understand that support from the hardware is needed here, but how to activate it in this laptop model.