Battery won't charge

Up until recently, I was being super careful with my battery life; I’d usually keep it hovering between 40% and 80%, and maybe once a month—or after about 30 charging cycles—I’d run a full calibration just to stay on top of things.

I haven't actually been using the laptop all that much lately, but even when I left it sitting, it would never drop below 50% or completely drain out after a while.
Then, out of nowhere, I noticed I could only get it up to about 65% or 67%. Fast forward through a couple of weeks, and today I turned it on only to find the battery was totally dead, and even with the charger plugged in, it wouldn't take a single drop of juice.

The laptop is about four years old now, but man, it really caught me off guard how fast it died—like, practically overnight! It used to be that if I charged it to 100%, I could easily watch a whole movie or get a few hours of solid work done.

Back on April 1, 2020, the full charge capacity was 35,642 mWh out of a design capacity of 48,000 mWh, but by February 21, 2021, that capacity had plummeted to just 16,722 mWh out of 48,000 mWh during the last charge.

According to the battery care software, my total capacity is currently sitting at 16,800 mWh, which puts the wear level at a whopping 65%.

So, I'm really wondering here: has this thing officially kicked the bucket, or is there still some life left in it for me to squeeze out?

I’ve never actually pulled the battery out since it’s built right into the chassis, and honestly, I never felt the need to go through the hassle of opening it up and swapping it back in.

/you didn't really need two separate threads for this, man. you could've just edited the original post or started a new one in the old thread instead.

What would you go with?
Looks like those articles are dying off one by one. Honestly, after four years, I can't say I'm surprised...
Now, I've seen plenty of different battery designs, but I vividly remember this one—I think it was an HP—that had this totally non-removable, built-in battery. It used those "flat cell" types, and you had to tear the entire laptop apart just to get to it. Before opening it up, the seams on the casing looked all warped and weirdly gapped. And the cells? They were so swollen and puffed up like little pillows that there was no way you could ever close the laptop back up with that battery inside...

Michael Jackson10 said:/you didn't need two separate threads for this; you could have just updated the original post or added a new comment to the old thread instead/

Which one would you go with?
It honestly feels like the cells are just dying off one by one—I mean, when you consider it's been four years, it’s really not that surprising, is it?...
Now, I've seen all sorts of different battery designs over the years, but I vividly remember one specific model—I think it was an HP—that had this completely integrated, non-removable battery setup. It used those flat cell designs where you actually had to strip the entire laptop down just to get a look at it. Before I finally cracked it open, the casing was bulging weirdly at the seams, and the cells themselves were so swollen and puffy, looking like little pillows, that there was absolutely no way to snap the laptop back together once that battery was inside...

I honestly have no idea how I ended up starting two different threads, and for some reason, I can't even delete my own post?
It’s clearly not holding a charge at all... I did run a BIOS update the other day, but I doubt that’s the culprit here.
I don't really have the time right now to crack it open and inspect the battery, but I don't think it's actually swollen.
If it is truly shot, would it be better to just pull it out entirely? Because right now, if I unplug it for even a split second, the whole thing just dies instantly.

So, I find myself facing a bit of a technical conundrum here, and I was wondering if anyone in this community might be willing to lend me some seasoned advice on how to proceed.

I’ve been using this specific laptop that I picked up back in 2018

https://www.bestbuy.com/site/products/details/example-laptop-link/123363

The issue at hand is that whenever I plug the power adapter into the charging port, the battery simply refuses to initiate the charging process immediately, and that little red indicator light—you know, the one that signals it's actually drawing power—doesn't even flicker on right away. To make matters even more peculiar, while it *is* charging, that light will sometimes just cut out entirely, the charging stops, and I hear this brief, sharp little beep indicating that the connection has been lost. My only workaround is to physically unplug the cord from the port and then shove it back in again, which occasionally works, though even then, it doesn't always take hold on the first try.

At this stage, I am genuinely stumped as to whether the fault lies within the power adapter itself, meaning I should probably just go out and buy a replacement, or if it's something else entirely, because looking closely at the port, everything seems perfectly fine to my eyes.

For those interested in the specifics, the charger is a Liteon power adapter, model 1450 26.