Windows 10: 255% battery. Turns off as soon as it's unplugged.

So my battery says it is 255% not 100%. As soon as it's unplugged it turns off.

Does anyone know what may be causing this ? I just did a factory reset and no dice. It has done this before and after updating as well.

Thanks.

submitted by /u/babygorilla90
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:)

 

Battery icon shows 255% even when battery not installed

As 255% is FF (hex) - all 1's - suggests a certain kind of bug...

If you have a live boot disk, that should prove it's not hardware related.

You could also try a 3rd party battery monitoring program, but if that reads the same buggy info from the OS, might give garbage too.

Similar here, resolved:
Battery shows 255% - how is that possible when 100 is the max?? | AVForums

 

Battery icon shows 255% even when battery not installed

HP dv-6c63NR Laptop. Recently (not sure when it started), the battery icon in the System Tray show 255% charge when the battery is installed or removed. I've rebooted multiple times and just finished a reset. Nothing changes, still shows 255% charge.

Any suggestions on how to trouble shoot this?

It was okay a week or two ago.

This laptop is in the Insider Fast stream and currently has 1903 18362.1. I could install a non-insider build on my 2nd HDD (I have a 500GB SSD boot and a 500GB HDD 2nd drive) as a test.

 

Deactivate low battery notification

Hi,

Windows 10 may have detected your old battery, the reason why your computer kept of notifying you about the battery life. To help you disable this notification, we suggest that you follow the steps below to turn off the notifications from battery saver:

(Note: Make sure to unplug your laptop from the power source first before performing the steps below.)

• Open Settings app.
• Select System.
• Click on Notifications & actions tab.
• Scroll down and look for Battery Saver and turn off the slider.
  
  

Let us know the results.