Laptop battery says "Plugged in" and is steadily draining

miba54

Thread Starter
Joined
Dec 1, 2015
Messages
15
Hi. I have a HP Pavilion Power Laptop 15-cb007nt that I bought three years ago. Two weeks ago suddenly the battery indicator started showing only "Plugged in" and was stuck at 95%. I assumed it would fix itself but it started dropping further, and over the course of two weeks it has now dropped down to 70%. Please note that it doesn't say "Plugged in, not charging" - it only says "Plugged in".

I ran a Battery Check through HP's support software and it gave this result.
Then I ran a EUFI Battery Check through the BIOS and the result said: "Logic State: OK (0) - Charge Capacity: 70% - Cycle Count: 61 - Battery Status: Replace (42) - Charge State: Blown Fuse (42)."

Now I'm well-aware that the battery might just be dying since it's three years old - but I'm not 100% convinced because before the issue started, the battery hadn't been showing any signs of declining health. It wasn't overheating, it wasn't losing charge quickly, it wasn't taking long to fully charge up. It was perfectly healthy. The issue suddenly started happening overnight. One morning I turned on the laptop and the battery was showing a 95% charge. And I remember installing a major Windows update a few days before the issue started happening. So I'm wondering if the update messed something up or if it's another software messing things up. If the battery is truly dead, I'd be happy to order a replacement but I want to be 100% sure it's not software or Windows update related before I do that.

- I've tried uninstalling the battery drivers through Device Manager and restarting the computer. It didn't help.
- I ran the Power Troubleshooter through Windows settings. It didn't help.
- The AC adapter is working fine. Both HP support tools said it was healthy.
- The EUFI Battery Check didn't give me the option to re-calibrate the battery automatically, so I couldn't try that.
- The Windows update is one of those "un-uninstallable" updates you can't right click on in the "Uninstall updates" page.
- I can't revert to a previous version of Windows because it's been more than 10 days since the update.
- The BIOS and the HP EUFI tool are updated to their latest versions.
- I'm running Windows 10 Pro - Version 20H2 - Build 19042.985

So I have two questions:

1. With the information I've provided, do you think there's even a slight chance the issue could be software or Windows update related or do I definitely have a dying battery?
2. Is there anything else I can try to troubleshoot/fix the battery to make sure it's a hardware issue and not a software one?

Thank you.
 
Last edited:

miba54

Thread Starter
Joined
Dec 1, 2015
Messages
15
When was the last time you calibrated the battery?
https://www.thewindowsclub.com/manually-calibrate-battery-of-windows-laptops

I recommend creating a specific power plan for this rather than editing a current plan.
I never calibrated it. The HP UEFI support tool normally provides the option to calibrate the battery automatically but it straight up told me to replace the battery without giving me the option to auto-calibrate.

The battery currently charges only up to 70%. Should I still try to calibrate it manually? Thank you.
 

Goddess-Bastet

Virginia
Joined
Apr 26, 2019
Messages
716
Yes I would manually calibrate the battery.
I had the same problem & this fixed it for me.
If this doesn’t fix the problem then the battery does require replacing.
 

managed

Allan
Moderator
Joined
May 24, 2003
Messages
15,379
You could also run the laptop with just the battery powering it and see how long the battery lasts, often if the battery is failing the actual time it lasts is a lot less than expected.
 

miba54

Thread Starter
Joined
Dec 1, 2015
Messages
15
You could also run the laptop with just the battery powering it and see how long the battery lasts, often if the battery is failing the actual time it lasts is a lot less than expected.
Thank you. Before I try these suggestions, I'd like to mention something else. I ran BatteryInfoView and it said my battery health is at 100%. I'm confused. Here's the result:
 

managed

Allan
Moderator
Joined
May 24, 2003
Messages
15,379
It also says 'Number of charge/discharge cycles 0' which is obviously wrong so I don't think you can trust those results.

You could try leaving the charger plugged in overnight with the laptop switched off, that is the best way to try to charge the battery because none of the power is used to run the laptop itself.

Then time how long the battery lasts with the charger disconnected, as I mentioned in my previous post, that's the best test.
 

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