255% available (plugged in)

I have solved the issue installing a little program called BatteryBar and disabling the Windows 10 icon!

Hi. I suddenly noticed the same thing after updating windows 10 today. So, after reading all the posts on this issue, I tried the unplug method described on thread page 3. However, as I was about to remove the battery, I noticed it had somehow become dislodged on one end. (Probably me twitching as I was getting over-excited watching footy on the laptop). On refitting it, then restarting it, the problem disappeared and is now showing 100% charged, as it should have been since it’s been plugged in for over 5 hours before it came loose. A loose battery isn’t something I considered to be honest! Therefore, I can only presume that when a battery is either dead, empty or simply not fitted correctly, it is displayed at 255% with a X inside the empty battery icon.) Never seen this before but then again, I’ve never had one end of the battery loose. This also makes sense as the laptop turned off as soon as I removed the power lead (before I refitted the battery and considering some have refitted or replaced the batteries, thus making a correct contact in the laptop, it may be as simple connection issue, or dead battery. Not really a windows update fault perhaps. Just a thought

I have the same problem and also since september update. Tried everything around October, couldn't find any solutions back then. Now I finally see this forum topic and it seems A LOT of people suffer from it.

By me it is SOLVED.

Very strange that Windows 10 (1909) also report '255% available' when the battery was removed.

First I have spilled many hours for not-working-solutions in this and other forums.

Then I order a new battery and everything is working!

After this I have tried the same with an other notebook with a good battery. I have removed the battery, start Windows and Windows said: 255% available.

I think the bug in Windows (maybe since 2019) is: When the battery is defective or removed or not recognized, Windows report 255% available. But earlier Windows reports better: No battery connected, or no battery found, or something like that.

It's a very strange and wrong error-mention.

It happens when the external battery (not the CMOS one) is not present!