After checking two HP Laptops, one relatively new, only 2 months old and the battery is less than a week old. The other one is about a year old. both have the same issue. The laptop's battery charges up to a certain percentage and then stops right there.
Here is an image of what I see when checking the charge:
The way I read this is that the Total Battery Energy by design is 88.8Wh. After 12 hours charging (after discharging the battery completely to recalibrate) it gets to 34.1Wh and stays there. Only 38.4% of the 100% battery charging level.
The other laptop does the same but up to 32.1%.
Here is another pic with the /proc info:
And yet another one with the
acpi -V command:
I checked if the connection was grounded. I checked that the cable connected to the laptop was good, even checked with a tester the current, voltage, etc.. Somehow is not charging completely or not showing the correct percent.