What laptop charge mode should I use?

Question

laptops

Confused the question of choosing a mode:
Written: Battery protection, you can choose three modes: Home, work, travel.
At the same time highlighted in red: When enabled....life may be shortened! What is the protection then?

If the mode is on, it charges up to 70%, the icon says - 70% is available. Mains powered .
If the mode is off, then it charges up to 100% and it says - Mains powered.
If I understand correctly, the charging cable is always on, this does not negatively affect the battery.
Whether it is worth using any mode - I do not understand. What will be more efficient to save the battery and does it make sense if the laptop eventually writes that the mains power?

Answer 1

The red text is the result of machine translation from Chinese. The text is not true.
Charge up to 50% - the maximum battery life.
If the laptop lives permanently at home and the battery is needed to read the news in the toilet or if the power goes out, the information is not lost - 50% is your option.