I have a feature called charge threshold in my laptop (It's pretty common for laptops to have them these days), it's like you set a limit to how much your battery gets charged once that limit is reached the adaptor turns cuts the supply and only resumes to charge again when the battery is reaches below some set limit. What I am interested in how does it actually works because when I switch off the charger and switch it back on what it does is it holds the charge of the battery if it hasn't reached the upper limit, ie. doesn't let the battery charge anymore or deplete.
So is it that the laptop is actually running on the charger? (As an charging adaptor can supply different power as per the demand) I looked for the specifications of my adaptor and it says it does operate at 65W (20V-3.25A), 45W (15V-3A), 18W (9V-2A), 10W (5V-2A). So can it run on the adaptor completely? I've uploaded an image in which it clearly shows that the battery is indeed inactive.
Or is it just trickle charging the battery? It might be the case that the software isn't able to refresh as quickly as the battery switches between charging and discharging states. Also if the device was powered solely by charger then how is the extra current managed when I put it in sleep?
But then I happen to have a older laptop (8yrs old) which now runs solely on the charging adaptor as it's battery has lost the capacity to hold any charge, which I can easily put in sleep while on charge, the point I'm trying to make is that this is possible if the manufacturers intended. But then would love to know how.