Understanding Earth Leakage Circuit Breakers ELCBs

Hp is a bogus company, this is what I learned after purchasing this laptop.
I have Sony Vaio laptop which I purchased in 2011 which have battery care function, which stops battery charging at either 50% or 80% and runs laptop on direct AC power, which in turn extend lifetime of battery. My battery is still good even after more than 12 years of using laptop.
I know that well established laptop companies have this feature present in their laptop. Ex. Asus, Lenovo, Samsung, etc. (Not the new laptop companies.). So, I presumed that hp would also have this feature, but after I owned this laptop, I came to know that this crucial feature is absent. And only some of the hp laptop models have this feature. I am very disappointed ☹️.
Because when laptop runs on battery power, it's performance is not good.

This laptop's keyboard is also so much bogus and stupid. The clicks are good and also the quality seems good, but the visibility of the text on keyboard is very bad. I use laptop mostly on my study table, and this silvery keyboard's keys text is invisible to read. I have to lean forward to see what's on it. (I think after some time I will get used to it, but as a beginner user of this laptop, it's too much hassle to use this keyboard).

I also have hp gaming mouse that I purchased recently whose back and forward side buttons are of bad build quality. And also I have one bad experience about HP pendrive.
Also I have heard about HP printers' bad reputation.

So, I have now decided to never buy any hp company product.