Battery is stuck on estimating
On some systems the embedded controller that performs the battery level handling can get stuck. In these cases I've resolved the issue by removing all power from the laptop and removed the battery for a few minutes to ensure that the embedded controller has powered off. Placing the battery back in the laptop has resolved the issue.
I have faced same issue. I took out my battery. Started my machine by directly connecting the power with out battery. After some time i switched off my machine reconnected the battery and started the machine. Now its working fine